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DP83840AVCE - 10/100 Ethernet PHY | Texas Instruments
DP83840AVCE

DP83840AVCE - 10/100 Ethernet PHY | Texas Instruments

Texas Instruments DP83840AVCE is a single-channel Ethernet physical-layer controller for 10 Mb/s and 100 Mb/s copper links, supplied in a 100-pin PQFP package measuring 14 mm by 20 mm. It supports 10BASE-T and 100BASE-TX operation from a 4.75 V to 5.25 V supply and consumes approximately 335 mA. An Ethernet physical layer, or Ethernet PHY, is the interface between a digital network controller and physical copper or fiber media. The DP83840AVCE implements the analog and digital signaling needed to communicate over twisted-pair cabling, while an upper-layer MAC handles packet framing, addressing, and higher-level protocols. Its 10/100 capability allows equipment to support both legacy 10 Mb/s networks and Fast Ethernet links through one physical interface. Key verified characteristics include support for 10/100BASE-T/TX, a 4.75 V to 5.25 V operating supply range, and approximately 335 mA supply current. The 100-pin PQFP package provides the connections required for integrated PHY functions, clocking, power, status, and media-interface signaling. Distributor listings identify the component as a 100-PQFP Ethernet physical-layer controller, and the package is supplied in tray packaging. The device is designed for industrial and embedded systems that require an IEEE 802.3af-compatible Ethernet interface. Relevant implementation considerations include proper magnetics coupling to an RJ45 connector, controlled clock and power distribution, compliant board layout, and isolation from high-energy network transients. Because the DP83840AVCE is listed as obsolete by one distributor, engineers should also confirm the availability of authorized inventory before beginning a new production design. Typical uses include industrial Ethernet equipment, embedded controllers, network interface appliances, test equipment, and communications infrastructure. The 10BASE-T capability can provide compatibility with installed 10 Mb/s infrastructure, while 100BASE-TX supports higher-throughput Fast Ethernet applications. System designers must still evaluate total board area, thermal behavior, component availability, and medium requirements around the obsolete-product status. The main engineering trade-off is legacy-versus-modern network architecture. A 10/100 PHY can connect equipment to older copper networks, but it does not provide the throughput or feature set expected from current multi-gigabit Ethernet designs. For a new platform, engineers should determine whether backward compatibility justifies the 100-pin PQFP footprint and source availability. This page consolidates verified distributor specifications, lifecycle information, sourcing context, and design-focused guidance for engineers evaluating the DP83840AVCE. It also distinguishes confirmed data from specifications that require review of the complete manufacturer datasheet before PCB release.

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DP83843BVJE - 10/100 Ethernet PHY | Texas Instruments
DP83843BVJE

DP83843BVJE - 10/100 Ethernet PHY | Texas Instruments

The Texas Instruments DP83843BVJE is a full-feature Ethernet physical-layer transceiver with integrated PMD sublayers, supporting 10BASE-T and 100BASE-X protocols at 10 Mb/s and 100 Mb/s. The device is supplied in an 80-pin QFP package measuring 14 mm by 14 mm. It is designed for 10/100 Mb/s Ethernet LAN implementations and provides the physical-layer interface required by a network media-access controller. An Ethernet PHY is the physical-layer device that connects a digital network controller to copper or fiber media. Within the networking hierarchy, the DP83843BVJE belongs to the Ethernet transceiver and interface-controller category, then to interface ICs and, more broadly, integrated circuits. Supporting both 10BASE-T and 100BASE-X allows one physical-layer design to address legacy 10 Mb/s copper links and 100 Mb/s Fast Ethernet links using either copper twisted-pair or optical-compatible signaling paths. The principal verified feature set includes IEEE 802.3 ENDEC operation, integrated PMD sublayers, support for 10BASE-T, support for 100BASE-X, four transmit drivers, and four receive drivers according to distributor product information. The manufacturer describes the device as a full-feature Physical Layer device intended to simplify implementation of 10/100 Mb/s Ethernet LANs. The 80-QFP package provides 80 physical terminals in a square gull-wing format. Technically, the DP83843BVJE separates Ethernet MAC-facing functions from the analog and digital signaling required by physical media. Its integrated PMD sublayers place the 10BASE-T and 100BASE-X physical coding functions inside the transceiver, reducing the amount of external media-interface circuitry required in a typical LAN design. The available verified excerpt does not provide a complete electrical timing table, register map, magnetics recommendation list, or thermal characterization, so those details must be confirmed in the complete manufacturer datasheet before schematic release. Typical uses include industrial Ethernet equipment, embedded network controllers, network interface cards, routers, switches, and other 10/100 Mb/s LAN equipment. In an industrial or embedded product, the transceiver can sit between an Ethernet MAC and the isolation or line-driver stage required by the selected 10BASE-T or 100BASE-X implementation. Board-level validation remains important because magnetics, clocking, termination, layout, and regulatory testing can determine whether a nominal PHY design functions reliably. Designers should preserve the manufacturer-recommended power, ground, and signal-integrity layout and verify every external network component against the complete datasheet. In particular, the selected Ethernet magnetics or PHY-side interface components must match the supported media mode, while differential routing and return paths require disciplined PCB implementation. Do not infer unsupported rise-time, jitter, temperature, or package thermal values from the distributor summaries. This product record combines the verified manufacturer description, distributor package information, source links, practical application context, and an explicit treatment of unavailable pin-level and electrical data. The comparison and validation notes distinguish confirmed facts from parameters that still require the full datasheet, allowing engineers to assess the DP83843BVJE efficiently without treating missing specifications as confirmed engineering data.

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DP83843BVJE/NOPB - 10/100 Ethernet PHY | Texas Instruments
DP83843BVJE/NOPB

DP83843BVJE/NOPB - 10/100 Ethernet PHY | Texas Instruments

The Texas Instruments DP83843BVJE/NOPB is a 10/100-Mbps Ethernet physical-layer transceiver with integrated PMD sublayers, 10BASE-T and 100BASE-X protocol support, fiber and AUI support, and an 80-pin QFP (NNC) package measuring 14 x 14 mm. The DP83843BVJE/NOPB is designed to implement 10/100-Mbps Ethernet local-area networks by providing the physical signaling interface between a network controller and twisted-pair, fiber, or AUI physical media. An Ethernet PHY is a semiconductor within the physical layer of the Ethernet protocol stack. The PHY converts digital data and control signals into the electrical or optical signaling required by network media, while receiving and returning signals from the medium. A 10/100 Ethernet PHY supports both 10-Mbps and 100-Mbps operation, allowing a single physical interface to accommodate legacy and Fast Ethernet networks. The device supports 10BASE-T and 100BASE-X Ethernet protocols through integrated PMD sublayers. Its 100BASE-X capability supports the fiber-oriented path identified by Texas Instruments, while the listed AUI support broadens the physical-media options available to the designer. This combination makes the DP83843 family useful in equipment that must bridge or interface multiple Ethernet physical-layer environments rather than using a copper-only 10/100 PHY. The DP83843BVJE/NOPB is packaged in an 80-pin QFP (NNC), identified in the manufacturer part-details listing as a 14 x 14 mm package with a 0 to 70 C operating-temperature range. The dense 80-lead format provides numerous PHY, media, control, and power-related connections while supporting compact, surface-mount assembly. Pin assignments, exposed supply requirements, clocking provisions, and media-interface details should be taken directly from the manufacturer pin-description tables before schematic capture. Typical uses include industrial Ethernet equipment, communications equipment, network-interface subsystems, embedded LAN designs, and legacy 10/100 infrastructure requiring a physical layer capable of copper and 100BASE-X media support. System designers should pair it with a compatible Ethernet MAC or network controller, validate media magnetics or fiber components against the selected 10BASE-T or 100BASE-X topology, and confirm that the controller interface matches the DP83843 configuration. A key implementation consideration is that Ethernet PHY designs are sensitive to power integrity, clock quality, controlled-impedance routing, and media-interface layout. Place all required bypass capacitors close to their associated supply pins, provide a continuous return path beneath high-speed signal routes, and keep the PHY, magnetics, and connector placement coordinated to minimize differential-impedance discontinuities and coupling into sensitive analog circuitry. This product overview consolidates the manufacturer-supported protocol capabilities, package information, sourcing guidance, comparison criteria, and practical PCB guidance needed to evaluate the DP83843BVJE/NOPB for a 10/100-Mbps Ethernet physical-layer design.

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DP83846AVHG - 10/100 Ethernet PHY | Texas Instruments
DP83846AVHG

DP83846AVHG - 10/100 Ethernet PHY | Texas Instruments

The Texas Instruments DP83846AVHG is a single-port 10/100 Ethernet physical-layer transceiver that supports 10BASE-T and 100BASE-TX operation over Category 3 or Category 5 unshielded twisted-pair cables. It is supplied in an 80-pin LQFP package measuring 12 x 12 mm. The integrated physical-layer device provides the media-access-control physical sublayer functions required to connect an Ethernet MAC or embedded controller to a copper network. An Ethernet physical-layer transceiver, commonly called an Ethernet PHY, is the component that translates logical data into electrical signaling compatible with twisted-pair Ethernet infrastructure. Within the network-interface hierarchy, an Ethernet PHY sits between a MAC or processor and an RJ45 magnetics interface. The DP83846AVHG therefore belongs to the interface-IC and network-interface-controller ecosystem rather than acting as a standalone general-purpose processor or memory device. The verified product information identifies the DP83846AVHG as a single 10/100 Ethernet transceiver supporting both 10BASE-T and 100BASE-TX protocols. Its stated cable compatibility includes Category 3 cabling for 10 Mb/s operation and Category 5 unshielded twisted-pair cabling for 100BASE-TX operation. Distributor listings additionally identify the physical package as an 80-terminal square gull-wing LQFP in a 12 x 12 mm outline. Because the PHY combines the PMD sublayers with the Ethernet physical interface, it can simplify the hardware portion of a copper Ethernet design. The host-side interface remains coupled to the function of the associated MAC or embedded Ethernet controller, while the line-side implementation must include the specified magnetics, connector, protection, and external circuitry recommended by the manufacturer. This division keeps protocol handling separate from analog signal transmission across the cable. Typical uses include industrial control equipment, embedded Ethernet gateways, factory automation, communications infrastructure, test equipment, and compact embedded systems that need 10/100-Mb/s copper connectivity. The dual-rate support is useful where equipment must communicate over installed 10-Mb/s or 100-Mb/s networks without requiring a gigabit-only physical layer. The principal design consideration is that PCB layout, magnetic-component selection, cable-side termination, supply quality, and thermal performance can be as important as the nominal PHY capability. Designers should use the manufacturer application guidance for high-speed trace geometry, component placement, isolation, and copper-versus-fibre interfaces where applicable. External Ethernet magnetics are normally required between the PHY and the RJ45 connector unless the chosen interface architecture specifies otherwise. This product page consolidates the verified package, protocol, cable, and distributor information for DP83846AVHG and adds practical application guidance, sourcing questions, and replacement context. It distinguishes documented values from parameters that still require confirmation from the full Texas Instruments datasheet, helping engineers make a traceable initial selection before completing PCB-level validation.

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DP83846AVHG-NS - 10/100 Ethernet Transceiver | Texas Instruments
DP83846AVHG-NS

DP83846AVHG-NS - 10/100 Ethernet Transceiver | Texas Instruments

The Texas Instruments DP83846AVHG-NS is a single-port 10/100 Ethernet physical-layer transceiver in an 80-LQFP (12 mm x 12 mm) package. The device is identified as a commercial-grade Ethernet transceiver for applications requiring 10BASE-T and 100BASE-TX connectivity, with an 80-pin surface-mount LQFP footprint. Its primary function is to provide the physical-layer interface between a network controller or embedded processor and an Ethernet cable. An Ethernet physical-layer transceiver, or PHY, converts logical data into electrical signals suitable for twisted-pair cabling and reconstructs received signals for the digital network controller. The DP83846AVHG-NS belongs to the broader category of Ethernet interface ICs, network interface controllers, and communication semiconductors. A PHY is commonly used when a processor, programmable logic device, industrial controller, or test equipment does not include a compatible Ethernet physical layer. The verified product information identifies the DP83846AVHG-NS as a single 10/100 Ethernet transceiver in an 80-LQFP (12x12) package. The commercial temperature grade is also identified for the related DP83846AVHG listing. The package provides 80 terminals with gull-wing leads and a square body, allowing the device to be assembled using standard surface-mount PCB processes. The Ethernet capability supports 10 Mb/s and 100 Mb/s network operation, while the exact PHY electrical ratings, media-dependent interface details, and performance limits should be confirmed in the manufacturer datasheet before design release. Typical applications include industrial Ethernet equipment, embedded control systems, network interface modules, instrumentation, printer controllers, telecommunications equipment, and communication adapters. The 80-LQFP package is particularly appropriate for multilayer PCBs where a high pin count is required to expose separate digital, analog, power, clock, and media-side connections. The package footprint also makes the device suitable for designs migrating from earlier 10/100 Ethernet PHY implementations when the board footprint and functional requirements remain compatible. When placing this device on a PCB, follow the manufacturer's recommended decoupling, analog-supply layout, clock, reset, and differential-pair routing guidance. Keep the Ethernet magnetics and cable-side routing away from noisy digital and switching-supply paths. Because the exact pin assignments, recommended capacitor values, and supported operating conditions are not stated in the retrieved product snippets, use the official datasheet pin description and application circuit before assigning PCB tracks. This product page combines the verified package and Ethernet-class information with application guidance, replacement context, and design-oriented selection notes. It is intended to help engineers identify whether the DP83846AVHG-NS matches a required 10/100 Ethernet PHY, commercial-grade 80-LQFP footprint, and surface-mount assembly process.

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DP83848CVVX/NOPB - 10/100 Ethernet PHY | Texas Instruments
DP83848CVVX/NOPB

DP83848CVVX/NOPB - 10/100 Ethernet PHY | Texas Instruments

The Texas Instruments DP83848CVVX/NOPB is a single-port 10/100-Mbps Ethernet physical-layer transceiver with MII, RMII, and SNI interfaces, supplied in a 48-pin LQFP (PT) package. The commercial-temperature device operates from 0°C to 70°C, uses a 3.3 V supply, and supports IEEE 802.3u networking operation. Its 48-pin 7 x 7 mm surface-mount package provides a defined option for embedded Ethernet designs requiring a conventional parallel media-independent interface. An Ethernet physical-layer transceiver, or Ethernet PHY, is the semiconductor component that connects a digital network controller to copper cabling. It belongs to the hierarchy transceiver IC > Ethernet interface IC > network interface > semiconductor. Unlike a media-access controller, the DP83848C does not implement the complete Ethernet protocol stack; instead, it handles physical signaling, link negotiation, line coding, and conversion between framed digital data and Manchester-coded or scrambled 10BASE-T and 100BASE-TX signals. Key features include support for both 10 Mbps and 100 Mbps operation, automatic link negotiation, SNI support, and JTAG support. The manufacturer identifies the device as a single-port Ethernet PHY with MII, RMII, and SNI connectivity. These interfaces let the same physical design support controllers using a parallel MII connection, reduced-pin RMII connection, or simple serial network interface. The interface choice affects board area, signal timing, firmware support, and host-port requirements. The DP83848C architecture separates the digital host interface from the analog copper-network front end. MII provides separate parallel paths for transmit and receive data, clock, carrier sense, and collision indications. RMII reduces the number of host signals by sharing clocks and control lines, while SNI simplifies lower-throughput serial networking designs. JTAG support adds a standardized boundary-scan path for board-level test and manufacturing inspection when the host system enables it. Typical uses include industrial Ethernet controllers, embedded network equipment, print servers, industrial automation modules, test equipment, and customer-premises network interfaces. Commercial-temperature operation makes the part appropriate for indoor systems where ambient temperatures remain within 0°C to 70°C. A system requiring operation outside that range should use a temperature-rated DP83848 family variant rather than assuming equivalent environmental performance. Designers should provide the required 3.3 V supply, decoupling, precision bias resistor network, magnetics, and compliant Ethernet magnetic isolation according to the manufacturer datasheet. Keep high-speed analog routing controlled, use the recommended reference and passive networks, and follow the exposed-pad and thermal-layout guidance for the LQFP package. Use the datasheet pin-description and layout examples when assigning signals and planning the board stack-up. This product guide combines the manufacturer interface descriptions, package and temperature information, lifecycle data, comparison details, and practical implementation guidance. It also distinguishes documented drop-in candidates from options that differ in temperature grade, qualification, or packaging, helping engineers assess PCB reuse and sourcing decisions before schematic release.

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DP83848EVV/NOPB - 10/100 Ethernet PHY | Texas Instruments
DP83848EVV/NOPB

DP83848EVV/NOPB - 10/100 Ethernet PHY | Texas Instruments

The Texas Instruments DP83848EVV/NOPB is a single-port 10/100-Mbps Ethernet physical-layer transceiver in a 48-pin LQFP package. It belongs to the DP83848I family of Ethernet PHY devices developed for industrial communications equipment. The part combines the physical-layer functions required to communicate with an Ethernet MAC over twisted-pair cabling, while the DP83848IVV/NOPB member documented by Texas Instruments is identified as an industrial-temperature device supporting SNI and JTAG. An Ethernet PHY is the analog and digital interface layer between a network controller and physical copper cable. It translates MAC-facing data through an MII or RMII interface, applies line encoding and signaling, and recovers data from the received physical signal. In this product hierarchy, the Ethernet PHY sits above the Ethernet transceiver function and below the Ethernet interface IC category, providing the physical link required by industrial Ethernet equipment. The DP83848EVV/NOPB is identified in the product records as an Ethernet transceiver with a 48-LQFP package. The related DP83848IVV/NOPB listing identifies the package as 7 x 7 mm and specifies a temperature range of -40°C to +85°C. The related DP83848IVVX/NOPB listing is explicitly presented as another member of the same DP83848I family, allowing package and feature-level comparison during replacement qualification. Detailed electrical ratings for the exact EVV suffix must be confirmed in the applicable National Semiconductor or Texas Instruments documentation before production release. The device family is positioned for industrial Ethernet systems where a dedicated PHY connects an embedded processor, programmable logic, or industrial controller to a 10BASE-T or 100BASE-TX network. Its integrated PHY reduces the number of external line-interface components required on a controller board, while standardized MAC-facing interfaces let the PHY operate with compatible Ethernet controllers. The exact supported media, interface modes, clocking requirements, and strap options should be selected from the pin-description and operating-information tables in the manufacturer datasheet. Typical design contexts include industrial Ethernet switches, embedded control systems, factory automation equipment, serial-to-Ethernet gateways, instrumentation, and network-enabled test equipment. In these applications, the DP83848EVV/NOPB handles the physical layer while the host processor manages packet processing and network services. Board-level implementation still requires a suitable Ethernet magnetics section, compliant cable-side routing, a stable clock source, and careful separation of sensitive analog and digital signals. For layout, place the PHY and its supporting passive network close to the Ethernet connector or cable entry point to minimize differential-pair impedance discontinuity and insertion loss. Keep the 10/100-Mbps magnetic-device side of the interface physically compact, provide the power and decoupling networks recommended by the family documentation, and route differential pairs as a controlled-impedance pair. Do not substitute the EVV suffix with IVV or IVVX without reviewing the exact pin, temperature, interface, and ordering-code differences. This product page combines the available manufacturer and distributor information with practical Ethernet-PHY placement guidance, package-aware alternatives, and an explicit verification checklist. It is intended to accelerate sourcing and board review while preserving the distinction between documented facts and parameters that still require confirmation from the exact suffix datasheet and current TI product page.

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DP83848HSQ/NOPB - 10/100 Ethernet PHY | Texas Instruments
DP83848HSQ/NOPB

DP83848HSQ/NOPB - 10/100 Ethernet PHY | Texas Instruments

The Texas Instruments DP83848HSQ/NOPB is a single-channel 10/100-Mbps Ethernet PHY transceiver with a 3 V to 3.6 V supply range, packaged in a 40-pin WQFN (RTA) package with an exposed pad. It is designed for space-sensitive embedded systems and supports Ethernet link distances beyond 137 meters of Cat-V cable. The device also provides Auto-MDIX, which removes the need to distinguish between straight-through and crossover cabling. An Ethernet PHY is the physical-layer device that converts digital data from a controller into Ethernet signals and converts received cable signals back into digital data. In the broader networking hierarchy, the PHY sits between a MAC or embedded processor and a transformer-coupled RJ45 interface. The DP83848HSQ/NOPB is therefore used when a system needs a dedicated 10/100-Mbps copper-Ethernet physical layer rather than a higher-speed multi-port Ethernet controller. The main device characteristics are its single-channel 1/1 transceiver configuration, 10/100-Mbps data-rate support, 3 V to 3.6 V operating supply, and extended-temperature capability from -40 C to +125 C. The 40-WQFN (RTA) package is intended for surface-mount designs requiring a compact footprint. Auto-MDIX simplifies physical installation by supporting automatic crossover detection and correction. The DP83848x family is positioned for embedded systems where interoperability, reliability, and compactness are important. The manufacturer describes performance beyond the IEEE specifications, while the product family supports the common MII serial management interface identified in the component listings. The device is used as the physical interface between an embedded Ethernet MAC and the external magnetics and RJ45 connector. Typical applications include industrial embedded controllers, automotive electronics, communications equipment, and network appliances that require a 10/100-Mbps copper Ethernet port. The extended-temperature range makes the DP83848HSQ/NOPB suitable for systems exposed to temperature extremes, provided that the complete board, magnetics, and enclosure are evaluated for the same environmental requirements. When laying out the PCB, place the PHY close to the transformer and RJ45 connector to minimize high-frequency differential-pair routing and return-path discontinuity. Follow the manufacturer pin-description table and layout guidance for supply decoupling, exposed-pad thermal connection, clock requirements, and signal return paths. Use the exact package drawing and pin assignment for the production design rather than relying on a generic QFN footprint.

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DP83848IVV - 10/100 Ethernet PHY Transceiver | Texas Instruments
DP83848IVV

DP83848IVV - 10/100 Ethernet PHY Transceiver | Texas Instruments

The Texas Instruments DP83848IVV is a single-port 10/100 Mb/s Ethernet physical layer transceiver (PHYTER) in a 48-pin LQFP (7x7 mm) package designed for reliable operation across industrial temperature ranges. The device supports IEEE 802.3u Fast Ethernet, integrating MII and RMII MAC interfaces, auto-negotiation, and on-chip echo cancellation to simplify PCB layout. An Ethernet PHY (Physical Layer Device) is a transceiver IC that sits between a MAC controller and the copper media (twisted pair), handling analog line driving/receiving, clock recovery, link monitoring, and 10BASE-T/100BASE-TX encoding/decoding. PHYTERs are a category of Ethernet PHYs that emphasize robust industrial-grade operation, sitting within the broader Ethernet controller hierarchy: PHY -> transceiver -> network interface device -> communication IC -> semiconductor. Key features of the DP83848IVV include integrated 100BASE-TX/FX physical coding sublayer (PCS) and physical media attachment (PMA), 3.3V single-rail operation with 2.5V internal LDO, Auto-MDIX crossover detection, Energy Detect Plus power-down modes, and 4 kV ESD tolerance on the MDI pins. The device also features low-latency (sub-100ns) MII throughput, hardware pause-frame support for flow control, and an IEEE 1149.1 JTAG boundary-scan port for board test. The 48-LQFP package provides a thermally efficient surface-mount footprint with 31.4 C/W typical junction-to-ambient resistance. Architecture-wise, the DP83848IVV combines a DSP-based receive path with adaptive equalization to recover signals over >150m of CAT-5 cable, a 125 MHz PLL for 100BASE-TX clocking, and a 25 MHz crystal interface or external clock input. Internal voltage regulation simplifies power tree implementation by accepting a single 3.3V supply. The DP83848IVV is designed for industrial Ethernet nodes, factory automation controllers, motor drives with EtherCAT/PROFINET bridges, building-automation gateways, IP-based surveillance cameras, and any embedded MCU/MPU with MII/RMII needing 10/100 connectivity. Its -40C to +85C industrial temperature grade supports deployment in harsh environments. When designing with the DP83848IVV, follow TI's reference layout for the magnetics and 49.9 ohm 1% termination resistors as specified in the datasheet application section. Use a 25 MHz crystal or feed a clean external CMOS clock; keep the MDI traces length-matched within 50 mils and 100-ohm differential-impedance controlled for best EMI margin.

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DP83848IVV/NOPB - 10/100 Ethernet PHY | Texas Instruments
DP83848IVV/NOPB

DP83848IVV/NOPB - 10/100 Ethernet PHY | Texas Instruments

Texas Instruments DP83848IVV/NOPB is a single-port 10/100 Mb/s Ethernet physical-layer transceiver with an integrated 1/1 Ethernet transceiver, SNI support, JTAG support, and a 48-pin LQFP (PT) package measuring 7 mm by 7 mm. The device is specified for industrial temperatures from -40°C to 85°C. An Ethernet PHY is the physical-layer component that converts digital MAC data into signals suitable for twisted-pair cabling and recovers signals presented by the cable. It belongs to the Ethernet transceiver hierarchy, where a PHY connects a network controller or processor to the physical copper medium. A 10/100 PHY supports both 10 Mb/s and 100 Mb/s operation, allowing a single physical interface to accommodate legacy and Fast Ethernet links. The DP83848IVV/NOPB combines Ethernet transceiver functionality with SNI and JTAG support. SNI provides a simplified network interface for applications that do not require the full register set of a conventional media-access controller. JTAG support assists board-level configuration, boundary scanning, and manufacturing test. The industrial temperature qualification makes the device suitable for equipment expected to operate across a broad commercial temperature range. The manufacturer describes the DP83848I family as a robust Ethernet PHY transceiver intended for industrial applications. Its SNI and JTAG features help reduce external interface complexity while preserving access to PHY configuration and production-test functions. The 48-pin LQFP (PT) package provides 48 external connections and is suited to conventional surface-mount PCB assembly rather than the smallest possible embedded designs. Typical uses include industrial Ethernet controllers, factory automation equipment, embedded control systems, network interface adapters, and communications equipment requiring a single copper-network port. The part is particularly appropriate where a system needs 10/100 Mb/s compatibility, industrial-temperature operation, and a simple PHY interface without moving to a newer multi-gigabit interface architecture. PCB design should follow the pin-description table and reference layout in the manufacturer documentation. Maintain short, continuous return paths beneath the digital interface and provide the required local bypass capacitors near the device. For magnetics-coupled ports, follow the specified separation and grounding guidance to reduce common-mode noise and maintain reliable link performance. This page combines the exact manufacturer order information, package and temperature details, verified drop-in candidates, interface-selection guidance, and practical PCB considerations into a design-focused reference for engineers evaluating the DP83848IVV/NOPB Ethernet PHY.

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DP83848IVVX/NOPB - Industrial 10/100 Ethernet PHY | TI LQFP-48
DP83848IVVX/NOPB

DP83848IVVX/NOPB - Industrial 10/100 Ethernet PHY | TI LQFP-48

The Texas Instruments DP83848IVVX/NOPB is a robust 10/100-Mbps Ethernet PHY transceiver (PHYTER) housed in a 48-pin LQFP (PT) package, designed for industrial temperature operation from -40C to +85C. It integrates MII/RMII/SNI MAC interfaces, supports both 100BASE-TX and 10BASE-T standards per IEEE 802.3u, and operates from a single 3.3 V supply. The device includes Auto-MDIX, hardware-driven cable diagnostics, and JTAG boundary-scan access, providing engineers with production-grade link visibility. An Ethernet PHY (physical layer transceiver) is the analog front-end that connects an MAC controller to the copper twisted-pair medium, performing encoding/decoding (MLT-3 for 100BASE-TX, Manchester for 10BASE-T), clock recovery, and adaptive equalization. PHYs sit at the bottom of the OSI physical layer and provide the digital baseband interface (MII/RMII/GMII) that links to the MAC. They are a sub-category of network interface ICs within the broader interface IC family, sitting between digital logic and the magnetics/connector of an Ethernet port. Key features include 3.3 V single-supply operation, integrated 100BASE-TX DSP with adaptive equalization and baseline-wander correction, programmable LED status outputs, IEEE 802.3u auto-negotiation, and a hardware Energy Detect power-down mode. The DP83848IVVX/NOPB ships with the SNI (Serial Network Interface) and JTAG test access port enabled, which simplifies board-level test and field diagnostics in factory-automation equipment. Architecturally, the part uses an DSP-based receive path with a 4B/5B/MLT-3 encoder-decoder and a PLL that recovers clock from inbound data. The integrated 1:1 turns-ratio magnetics interface and on-chip termination reduce external BOM count compared to legacy PHYs that required external termination networks, while the PT (LQFP-48) package gives a robust 0.5 mm pitch footprint suitable for industrial PCB assembly. Typical applications include industrial Ethernet switches, programmable logic controllers (PLCs), factory-automation nodes, motion-control drives, and embedded gateways requiring -40C to +85C operation. The wide temperature range and JTAG access make the part particularly attractive in Industry-4.0 retrofits where deterministic connectivity and field serviceability are required. When designing with this device, place the 50 ohm transmission-line impedance traces between PHY and magnetics to within 25 mm, and use the recommended 2 kV HBM-rated magnetics module to meet industrial ESD/Surge targets. Always verify the reference clock source stability, because MII jitter margins shrink as cable length approaches 100 m. This page synthesizes distributor pricing, drop-in pin-compatible alternatives, and practical layout notes not always aggregated in the manufacturer datasheet, so procurement and engineering teams can shortlist a known-good BOM faster.

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DP83848JSQ/NOPB - 10/100 Ethernet PHY Transceiver, 40-WQFN | Texas Instruments
DP83848JSQ/NOPB

DP83848JSQ/NOPB - 10/100 Ethernet PHY Transceiver, 40-WQFN | Texas Instruments

The Texas Instruments DP83848JSQ/NOPB is a single-port 10/100 Mb/s Ethernet PHY transceiver (PHYTER Mini LS) in a 40-pin WQFN package measuring 6 x 6 mm with an exposed thermal pad. It operates from a single 3.3 V supply with a 3 V to 3.6 V range, supports MII and RMII host interfaces, and draws 92 mA of supply current. An Ethernet PHY is the physical-layer transceiver inside a network interface: it converts digital parallel data from a host MAC into differential copper signaling on an RJ45 magnetics module, and converts incoming line signals back into digital data. In the product hierarchy it sits as an Ethernet transceiver, then a network interface IC, then an interface IC within the broader semiconductor family. The DP83848 family is built on a low-power 3.3 V, 0.18 um process, which is why it suits space-sensitive embedded systems where board area and standby power are constrained. Key features of this device include support for both 10BASE-T and 100BASE-TX over Category 5 cable, Auto-MDIX for automatic crossover handling, and performance beyond the 137 m Cat-V reach required by IEEE 802.3. The commercial-temperature grade covers 0 C to +70 C, and the part is offered in a RoHS-compliant, lead-free 40-WQFN package. At 92 mA typical supply current and 264 mW of stated power dissipation, it adds little thermal load to a compact embedded board. Technically the DP83848J integrates a 10/100 MAC-compatible PHY front end, an MII/RMII-compliant management interface, and PHY strapping and reset pins for hardware-controlled configuration. That means a small microcontroller or FPGA can bring up Ethernet with almost no host-side software, using resistor straps on the configuration pins rather than a driver stack, which matters in industrial control, test equipment, and building-automation nodes. Typical applications include industrial control boards, HMI panels, set-top and access equipment, printers, IP cameras, and any embedded system that needs a robust copper Ethernet port. For new designs where a smaller footprint or lower system power is the priority, the DP83867 family offers a more integrated alternative, while the DP83848 remains the reference choice for cost-sensitive 10/100 designs. One key design consideration: the device requires an external 1:1 isolation transformer or integrated magnetics with a center-tap bias network, and the layout must keep the 50-ohm differential pairs away from noisy digital return paths. Use the pin-description table in the manufacturer datasheet when assigning PCB tracks and keep the exposed pad tied to a solid ground plane for heat spreading. This page synthesizes distributor availability, pin-compatible drop-in alternatives, parameter-level comparison tables, and practical layout guidance that go beyond the manufacturer datasheet, so engineers can qualify a 10/100 Ethernet front end quickly.

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DP83848MPHPEP - 10/100 Ethernet PHY | Texas Instruments
DP83848MPHPEP

DP83848MPHPEP - 10/100 Ethernet PHY | Texas Instruments

Texas Instruments DP83848MPHPEP is a single-port 10/100 Mb/s Ethernet physical-layer transceiver, also known as an Ethernet PHY, with a 25 MHz clock output in a 48-HTQFP package measuring 7 mm by 7 mm. The device is intended for industrial networking, communications equipment, embedded systems, and harsh-temperature applications that require IEEE 802.3u-compliant Ethernet connectivity. An Ethernet physical-layer transceiver is the circuit that converts digital Ethernet data into electrical signals for a twisted-pair cable and converts incoming cable signals back into digital data for the host controller or processor. In the hierarchy of electronic components, the DP83848MPHPEP is a network interface IC, then an Ethernet transceiver, then a physical-layer transceiver within the broader field of data-processing and communications semiconductors. The principal characteristics of the DP83848MPHPEP are its 10/100 Mb/s data-rate support, single-port configuration, 3.3 V operation, and extended military temperature range of -55°C to 125°C. Its IEEE 802.3u compatibility makes it suitable for conventional 10BASE-T and 100BASE-T network connections. A 25 MHz clock output is available from the related DP83848M device family identified by Texas Instruments. The DP83848-EP product line was designed for applications with severe environmental requirements, where equipment may operate outside commercial or industrial temperature conditions. This extended-temperature capability distinguishes the DP83848MPHPEP from ordinary DP83848M variants intended for commercial operation. The 48-HTQFP package also supports compact surface-mount construction while providing a defined thermal and electrical interface for multilayer PCB assembly. Typical uses include industrial Ethernet controllers, factory automation equipment, communications infrastructure, embedded network appliances, and data-acquisition systems. When paired with an appropriate Ethernet controller or embedded processor, the PHY can connect a digital system to a standard copper Ethernet network while leaving protocol, framing, and host-interface functions above the physical layer. PCB design should preserve the differential characteristics of the transmit and receive pairs, provide the specified interface and bias circuitry, and follow the manufacturer’s pin-description and reference-layout guidance. Because the DP83848MPHPEP supports operation up to 125°C, thermal assessment should include maximum ambient temperature, copper area, nearby heat sources, and the selected PCB construction rather than relying only on a generic package rating. This product page consolidates the manufacturer’s family description, package information, temperature-range information, ordering information, and engineering selection guidance. It also identifies documented same-package replacement options and separates confirmed drop-in candidates from broader family relatives that require additional compatibility review.

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DP83848MPTBEP - Military 10/100 Ethernet PHY | Texas Instruments
DP83848MPTBEP

DP83848MPTBEP - Military 10/100 Ethernet PHY | Texas Instruments

Texas Instruments DP83848MPTBEP is a single-port 10/100 Mb/s Ethernet physical-layer transceiver designed for industrial and military-temperature equipment. It supports full-duplex and half-duplex operation, includes both MII and RMII host interfaces, and is packaged in a 48-pin HLQFP measuring 7 x 7 mm. The enhanced-product variant operates across a military temperature range of -55°C to 125°C and provides enhanced ESD protection for connections exposed to electrically harsh environments. An Ethernet physical-layer transceiver, commonly called an Ethernet PHY, converts digital Ethernet data into signals suitable for transmission over twisted-pair cabling and converts received signals back into digital data. A PHY therefore forms the physical interface between a network controller or microprocessor and a 10/100BASE-T Ethernet connection. Supporting MII and RMII gives the DP83848MPTBEP flexibility to connect either a parallel MII interface or a reduced-pin RMII interface, making it suitable for systems with different host-controller constraints. The DP83848MPTBEP combines a 10/100 Mb/s Ethernet data path with a broad -55°C to 125°C operating range. Its full-duplex mode supports simultaneous transmission and reception, while half-duplex operation remains available for designs using shared-medium arrangements. The 48-pin HLQFP package provides a defined leaded footprint for leaded PCBs, and the seven-by-seven-millimetre body supports compact industrial, communications, defense, and test equipment assemblies. Enhanced ESD protection is a central feature of this enhanced-product PHY. Ethernet ports are commonly exposed to user-accessible cables and therefore can encounter electrostatic discharge events. Positioning the protection and signal-conditioning functions inside the PHY helps preserve communication reliability when the connector is no more than a short cable run from the circuit board. The MII and RMII interfaces allow the same physical-layer device to support controllers designed around either parallel-data architecture. Typical uses include ruggedized Ethernet data links, industrial control equipment, communications modules, military electronics, instrumentation, and embedded systems operating across extended temperature ranges. The PHY can be paired with an Ethernet-capable controller or microcontroller through MII or RMII. Designers must still account for the selected interface voltage levels, required external magnetics, termination, isolation strategy, clock arrangement, and separation between high-energy switching nodes and sensitive Ethernet signals. The primary design consideration is the relationship between operating temperature, PCB material, leaded-package soldering, and the copper and magnetics selected for the magnetics interface. Place the DP83848MPTBEP and its supporting network components to minimize loop area on each differential pair, route each pair as a controlled-impedance transmission line, and follow the manufacturer's recommended magnetic-component layout. Verify startup behavior, link negotiation, clock requirements, and fault handling across the complete product temperature range. This product overview combines the manufacturer’s device description, exact ordering information, package details, operating limits, and interface features with practical guidance for rugged Ethernet implementation. It also distinguishes the verified DP83848 family alternatives from unsupported substitutions and identifies the parameters that must be checked before any replacement is approved.

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DP83848MPTBREP - 10/100 Ethernet PHY | Texas Instruments
DP83848MPTBREP

DP83848MPTBREP - 10/100 Ethernet PHY | Texas Instruments

Texas Instruments DP83848MPTBREP is a single-port 10/100 Mbps Ethernet physical-layer transceiver in the PHYTER family. It supports full- and half-duplex Ethernet operation, complies with IEEE 802.3u, and is specified for a military temperature range of -55°C to 125°C. The device is packaged in a 48-pin HLFQFP with a 7 x 7 mm body and is intended for industrial, communications, and other harsh-environment networks. An Ethernet physical-layer transceiver, or PHY, is the semiconductor interface between a digital network controller and copper cabling. A PHY converts digital data into electrical signaling for transmission and recovers incoming signals for the digital Ethernet controller. The DP83848-EP therefore belongs to the hierarchy Ethernet transceiver -> Ethernet interface IC -> network interface semiconductor, while the DP83848MPTBREP is the enhanced-product, military-temperature member of the DP83848 family. The primary headline characteristics are a 10/100 Mbps data rate, one Ethernet port, IEEE 802.3u compliance, and operation from -55°C to 125°C. Full- and half-duplex modes provide flexibility for systems operating with different network traffic patterns. The 48-HLFQFP package exposes 48 terminals and uses a square gull-wing form factor suitable for multilayer PCB assembly in equipment where environmental robustness is important. The DP83848-EP was developed for Ethernet connectivity in harsh environments. Its extended temperature capability differentiates it from standard-temperature DP83848 variants and makes it relevant to industrial control, military communications, aerospace electronics, telemetry equipment, and outdoor network infrastructure. Designers should still verify the complete electrical, clocking, termination, isolation, and magnetic-interface requirements against the manufacturer datasheet for the final system. Typical implementations place the PHY beside an Ethernet controller, connect it through an integrated digital interface, and route its analog TX and RX lanes through an isolation transformer or compatible Ethernet magnetic component. The digital interface provides the logical path to the host processor, while the analog section performs cable-facing transmission and reception. PCB signal integrity and magnetic-component selection are therefore central to achieving reliable 10BASE-T and 100BASE-TX operation. For new layouts, use the manufacturer pin-description table and recommended application information to assign all 48 terminals, configure strap inputs, route differential pairs symmetrically, and provide the required decoupling. Pay particular attention to ground continuity, return paths, component spacing around the magnetic interface, and the separation between sensitive receive circuitry and switching or high-current sections. This product page consolidates the exact manufacturer and distributor identifiers, package information, environmental claims, application guidance, replacement analysis, and PCB design considerations into one engineering reference. It also distinguishes confirmed drop-in candidates from related family members whose temperature grades or pin compatibility cannot be treated as equivalent without validation.

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DP83848MSQ/NOPB - 10/100 Ethernet PHY | Texas Instruments
DP83848MSQ/NOPB

DP83848MSQ/NOPB - 10/100 Ethernet PHY | Texas Instruments

The Texas Instruments DP83848MSQ/NOPB is a single-port 10/100 Mbps Ethernet physical-layer transceiver with MII and RMII interfaces, Auto-MDIX support, and a 40-pin WQFN package measuring 6 mm by 6 mm. It is designed for space-constrained embedded systems that require a reliable copper-network interface without the footprint of a larger Ethernet controller. An Ethernet PHY is the physical-layer component in an Ethernet communication system. It converts digital frame data from a MAC or embedded processor into signals suitable for twisted-pair cabling and converts received signals back into digital data. The DP83848M family combines this physical-layer function with MII and RMII host interfaces, enabling connection between an Ethernet medium and an embedded controller through a compact, industry-standard interface. The device supports 10 Mbps and 100 Mbps operation, automatic crossover through Auto-MDIX, and compatibility with IEEE 802.3 Ethernet requirements. Its small 6 mm × 6 mm, 40-pin WQFN package is intended for industrial controls, building and factory automation, transportation equipment, test instruments, and wireless base stations. Auto-MDIX simplifies cabling by allowing the transceiver to configure its transmit and receive pairs for straight-through or crossover connections without manual software control. The DP83848x family is designed to provide interoperability and reliable operation over Category 5 cable, with the manufacturer describing performance beyond 137 meters of Cat-V cable. Its MII interface supports designs using a parallel media-independent interface, while RMII reduces the number of host signals required for many embedded Ethernet designs. The choice between MII and RMII affects host-side wiring, firmware configuration, board routing, and the achievable reduction in connector and component count. Typical implementations connect the DP83848MSQ/NOPB between an embedded Ethernet-capable host and an RJ45 network jack equipped with appropriate magnetics and surge protection. Industrial controllers use it for programmable automation equipment, while test and measurement products use it for network-managed instrumentation. Transportation and wireless base-station designs benefit from the compact package and interoperability-focused implementation. Designers should follow the manufacturer’s reference layout and interface guidance, including placement of the PHY close to the network connector and controlled routing of differential and clock signals. Decoupling, thermal management, and proper handling of the exposed pad and ground connectivity are central to reliable operation. The complete pin assignments and layout constraints should be taken from the manufacturer datasheet and pin-description tables. This page organizes the verified device information, practical application context, package details, and qualified comparison points for engineers evaluating the DP83848MSQ/NOPB. It also distinguishes documented characteristics from parameters that require direct confirmation in the datasheet, helping designers plan a qualified Ethernet interface without treating unconfirmed electrical details as design guarantees.

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DP83848QSQ/NOPB - 10/100 Ethernet PHY | Texas Instruments
DP83848QSQ/NOPB

DP83848QSQ/NOPB - 10/100 Ethernet PHY | Texas Instruments

The Texas Instruments DP83848QSQ/NOPB is a single-port 10/100 Mb/s Ethernet physical-layer transceiver with a 3.3 V supply, MII and RMII host interfaces, and a 40-pin WQFN package with an exposed thermal pad. It is the Automotive Grade 2 member of the PHYTER family, specified for an operating temperature range of -40°C to 105°C. The device is intended for embedded systems that require an IEEE 802.3-compatible copper Ethernet interface and include enhanced electrostatic-discharge protection. An Ethernet physical-layer transceiver, commonly called an Ethernet PHY, converts between a host controller’s digital parallel or serial interface and the differential signaling used on a twisted-pair Ethernet cable. In the product hierarchy, the DP83848QSQ/NOPB is a physical-layer transceiver within the Ethernet interface IC category and ultimately belongs to the broader semiconductor and embedded-networking ecosystem. Its MII and RMII options provide flexibility when connecting to a microcontroller, application processor, field-programmable gate array, or dedicated Ethernet controller. The DP83848QSQ/NOPB supports both 10 Mb/s and 100 Mb/s operation through one copper port. Its 3.3 V supply and selectable MII or RMII management interface simplify integration with digital logic operating at compatible voltage levels. The automotive-grade temperature rating makes it suitable for harsh industrial and vehicle electronics where commercial-temperature Ethernet PHYs may not provide sufficient operating margin. Enhanced ESD protection supports equipment exposed to electrostatic discharge during installation or field use. The PHYTER architecture separates network-media access from the host digital interface. In an RMII design, the host processor supplies reference-clock, data, carrier-sense, and control signals through the reduced serial interface. In an MII design, the PHY uses a wider parallel data bus. The choice of interface affects board area, wiring between the processor and PHY, firmware configuration, and signal-integrity requirements. The manufacturer datasheet identifies MII and RMII as supported host-interface options, making the device adaptable to different embedded processor architectures. Typical uses include industrial Ethernet gateways, automotive infotainment modules, building-control equipment, factory automation controllers, network-connected sensors, and embedded test systems. A design can place the DP83848QSQ/NOPB beside an RMII-capable processor, connect the PHY to a magnetic interface or integrated network transformer, and route one differential pair to an RJ45 or ruggedized Ethernet connector. The wide temperature range is especially useful where ambient conditions vary substantially during operation. Layout quality is central to reliable Ethernet operation. Keep the PHY, crystal or clock source, decoupling capacitors, and magnetic-device connections close together, and follow the manufacturer’s recommended high-speed layout and component-placement guidance. A stable reference clock and correctly implemented termination network are as important as electrical speed compliance. Validate the final board for impedance continuity, return-path continuity, radiated emissions, and immunity to external ESD events. This product page combines the manufacturer’s electrical and environmental specifications with package details, interface guidance, application scenarios, and selection criteria for engineers evaluating the DP83848QSQ/NOPB. It also highlights where a temperature-grade or packing-code change can support procurement flexibility while requiring careful review of ordering information, qualification, and interface behavior before substitution.

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DP83848QSQE/NOPB - 10/100 Ethernet PHY | Texas Instruments
DP83848QSQE/NOPB

DP83848QSQE/NOPB - 10/100 Ethernet PHY | Texas Instruments

Texas Instruments DP83848QSQE/NOPB is a single-port 10/100 Mb/s Ethernet physical-layer transceiver in a 40-pin WQFN package measuring 6 mm by 6 mm. It operates from a 3.3 V supply and supports both MII and RMII host interfaces, giving embedded equipment designers flexibility when connecting the PHY to a microprocessor, microcontroller, or application-specific processor. The Q-Q1 family designation identifies the automotive Grade 2 version of the PHYTER Ethernet family. An Ethernet physical-layer transceiver, commonly called an Ethernet PHY, converts logical data transmitted by a host controller into electrical signals suitable for an Ethernet cable. In the broader product hierarchy, the DP83848QSQE/NOPB is an Ethernet interface IC, a physical-layer device within the family of semiconductor components used to connect embedded equipment to 10BASE-T and 100BASE-TX networks. Key features include support for both 10 Mb/s and 100 Mb/s operation, a single Ethernet port, simultaneous MII and RMII interface options, and enhanced ESD protection. These features suit industrial, automotive, communications, and embedded systems where the design must connect a digital host controller to a standard Ethernet network through a magnetic-link or network connector. The PHY provides a physical-layer interface between the digital Ethernet MAC function and the network medium. MII support suits hosts requiring parallel digital signaling, while RMII reduces the number of host-interface signals when board space is important. Selection between them requires checking the host processor's Ethernet controller pin compatibility, timing requirements, clock arrangement, and reference-design guidance in the manufacturer datasheet. Typical applications include industrial Ethernet controllers, automotive infotainment and telematics modules, factory automation equipment, building-automation gateways, embedded network bridges, and communications equipment. The 10/100 Mb/s capability provides compatibility with legacy Ethernet infrastructure as well as standard 100BASE-TX links. The principal design consideration is that PHY integration does not replace Ethernet magnetics or a qualified network connector. Keep the digital MII or RMII interface short, follow the manufacturer's recommended decoupling and layout practices, and verify the exposed-pad connection and thermal design before production release. This page consolidates the device's interface, package, automotive-grade, and replacement information into an engineering-focused selection guide. It also compares directly related 40-pin Ethernet PHY options and identifies which parameters remain identical, helping designers distinguish functional alternatives from changes that require PCB or firmware review.

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DP83848QSQX/NOPB - Automotive 10/100 Ethernet PHY | TI
DP83848QSQX/NOPB

DP83848QSQX/NOPB - Automotive 10/100 Ethernet PHY | TI

Texas Instruments DP83848QSQX/NOPB is an Automotive Grade 2, single-port 10/100-Mbps Ethernet physical-layer transceiver packaged in a 40-pin WQFN RTA package measuring 6 x 6 mm. It supports the physical signaling functions required for a 10BASE-T or 100BASE-TX Ethernet connection and includes MII serial management interface support. The device is specified for extended temperatures from -40°C to 105°C, making it suitable for industrial and automotive equipment operating across a wide environmental range. An Ethernet physical-layer transceiver, commonly called an Ethernet PHY, converts digital data into the electrical signaling used by twisted-pair Ethernet and receives the corresponding physical signals for conversion into digital data. The PHY sits between a network controller or processor with an MII-compatible interface and the transformer-coupled Ethernet line. In system terms, it is an interface IC within the broader Ethernet connectivity hierarchy. Key characteristics include one 10/100-Mbps network port, MII serial management interface support, an Automotive Grade 2 designation, a -40°C to 105°C operating-temperature range, and a compact 40-pin WQFN RTA package. The 6 x 6 mm footprint supports space-constrained embedded systems while providing numerous signal and supply connections for controlled Ethernet implementations. The device is intended for designers of industrial controllers, automotive electronic modules, factory equipment, building infrastructure, and other embedded systems that require a dedicated 10/100-Mbps copper-Ethernet interface. A processor or dedicated Ethernet controller handles higher-level packet processing, while the DP83848QSQX/NOPB manages the physical copper-channel interface. Its extended-temperature qualification supports use in environments where commercial-temperature components are unsuitable. When laying out a board around the DP83848QSQX/NOPB, place the PHY close to the Ethernet connector and magnetics to minimize high-frequency trace length. Follow the pin-description and layout guidance in the Texas Instruments datasheet when assigning power, ground, clock, data, and management signals. A short, continuous ground plane and careful separation of sensitive receive paths from noisy digital or switching circuitry are central to reliable signal integrity. The principal engineering trade-off is that this integrated PHY supports 10/100 Mb/s rather than gigabit Ethernet. It therefore suits legacy or deliberately bandwidth-limited embedded networks where 100 Mbps is sufficient. Its automotive grade and extended temperature range distinguish it from standard commercial-temperature PHY options, while system qualification still depends on the complete product environment and applicable test requirements. This page organizes the manufacturer device identification, package information, technical application guidance, and available drop-in alternatives into one engineering-focused reference. The design notes also emphasize connector placement, return paths, thermal considerations, and the importance of confirming every pin assignment against the current Texas Instruments datasheet before PCB release.

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DP83848TSQ/NOPB - 10/100 Ethernet PHY | Texas Instruments
DP83848TSQ/NOPB

DP83848TSQ/NOPB - 10/100 Ethernet PHY | Texas Instruments

The Texas Instruments DP83848TSQ/NOPB is a single-port 10/100 Ethernet physical-layer transceiver with a 40-WQFN package measuring 6 mm by 6 mm. It supports 10 Mbps and 100 Mbps Ethernet operation, provides Auto-MDIX cable handling, and includes a 25 MHz clock output that can reduce the need for a separate clock source. The device is identified as an automotive-qualified, 3.3 V single-channel Ethernet PHY in a 40-pin WQFN package with an exposed pad. An Ethernet PHY is the physical-layer interface between a network controller or embedded processor and twisted-pair Ethernet cabling. Within the Ethernet hierarchy, a PHY connects the MAC-layer data interface to the physical medium, while a media-access controller handles frame construction, addressing, and higher-level traffic control. The DP83848T supports MII and RMII-style integration needs and is designed for compact embedded systems where board area, interoperability, and cable reach are important considerations. Key features include 10/100 Mbps data-rate operation, Auto-MDIX for automatic selection between straight-through and crossover cable connections, and a 25 MHz clock output. The manufacturer states that the device provides performance beyond the IEEE specifications, strong interoperability, and operation beyond 137 meters of Cat-V cable. The 6 mm by 6 mm WQFN package also includes an exposed thermal pad for heat transfer to the PCB during operation. The DP83848T family is intended for industrial controls, building and factory automation, transportation equipment, test instrumentation, and wireless base stations. Its single-port architecture makes it appropriate for embedded Ethernet links that need a dedicated PHY close to the host controller. Designers should preserve the manufacturer-recommended power, decoupling, clock, magnetic-interface, and differential-pair layout guidance to maintain signal integrity and reliable network performance. A principal design trade-off is that the DP83848TSQ/NOPB is a 10/100 device rather than a gigabit PHY. It remains suitable for legacy and industrial 100BASE-TX links, but it cannot replace a 1000BASE-T implementation. The automotive suffix indicates suitability for automotive-grade programs, while the exact orderable qualification, temperature range, and electrical limits should be confirmed from the manufacturer ordering information before release. For layout, place the PHY close to the Ethernet connector and route the differential transmit and receive pairs as controlled-impedance, continuously referenced traces. Keep switching regulators, clocks, and high-current paths away from the magnetic-interface section, and provide the specified input and output capacitors close to their associated supply pins. Use the exposed-pad area as a thermal and return-path structure according to the manufacturer land-pattern guidance. This page consolidates the manufacturer product information, exact-MPN sourcing records, same-family drop-in candidates, comparison criteria, and implementation notes needed to evaluate the DP83848TSQ/NOPB before schematic capture. Review the manufacturer datasheet pin table and package drawing when assigning every signal, especially the exposed-pad connection and MII/RMII interface requirements.

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DP83848VYB/NOPB - 10/100 Ethernet PHY | Texas Instruments
DP83848VYB/NOPB

DP83848VYB/NOPB - 10/100 Ethernet PHY | Texas Instruments

The Texas Instruments DP83848VYB/NOPB is a single-port 10/100 Mb/s Ethernet physical-layer transceiver with MII and RMII host interfaces, 3.0 V to 3.6 V supply operation, and a 48-LQFP exposed-pad package measuring 7 mm by 7 mm. It supports operation from -40°C to +105°C, making it suitable for industrial and extended-temperature networking equipment. An Ethernet PHY is the physical-layer component that converts digital frames exchanged with a network controller into electrical signals carried over twisted-pair Ethernet. A single-port 10/100 PHY provides both 10 Mb/s and 100 Mb/s links through auto-negotiation, allowing the connected equipment and network switch to select a common operating speed. The DP83848VYB/NOPB also supports IEEE 802.3 parallel detection for links that cannot perform the complete negotiation sequence. The PHY supports MII and RMII host interfaces, JTAG test access, and integrated physical-layer functions for copper Ethernet. Its advertised supply current is 92 mA, while the 3.0 V to 3.6 V operating range supports conventional 3.3 V equipment. The exposed thermal pad improves heat transfer from the 48-pin LQFP package, an important consideration in compact industrial systems with sustained 100 Mb/s activity. Compared with the standard-temperature DP83848YB/NOPB, the VYB variant extends the operating range to +105°C. The DP83848VYB/NOPB product family provides a practical migration path for designs requiring a higher temperature rating while retaining a 48-LQFP exposed-pad footprint and the same fundamental 10/100 Ethernet architecture. Pin-level substitution still requires comparison of device strapping, termination, interface timing, and exposed-pad requirements in the manufacturer datasheet. Typical uses include industrial Ethernet controllers, embedded data-acquisition equipment, factory automation nodes, building controls, communication modules, and embedded Linux systems. RMII is useful when the host processor needs a compact parallel bus, while MII offers additional signaling and test options for designs whose host interface and board requirements favor that configuration. PCB implementation should preserve the manufacturer’s prescribed 50-ohm differential trace geometry, component spacing, isolation-divider layout, magnetics placement, and exposed-pad thermal-via pattern. Place network magnetics near the cable and PHY side of the board, keep sensitive signals away from high-energy transient paths, and provide filtering appropriate to the required surge and ESD immunity. This product overview combines the manufacturer’s electrical and environmental specifications with practical PCB, thermal, sourcing, and substitution guidance. It helps engineers evaluate the DP83848VYB/NOPB for extended-temperature copper-Ethernet designs and compare documented same-manufacturer family options without overlooking interface and layout constraints.

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DP83848YB/NOPB - 10/100 Ethernet PHY | Texas Instruments
DP83848YB/NOPB

DP83848YB/NOPB - 10/100 Ethernet PHY | Texas Instruments

Texas Instruments DP83848YB/NOPB is a single-port 10/100-Mbps Ethernet physical-layer transceiver with JTAG support, packaged in a 48-pin HLQFP (PTB) surface-mount package with a 7 mm by 7 mm body. It operates across the extended industrial temperature range of -40°C to 125°C, making it suitable for temperature-challenging industrial, communications, and embedded Ethernet equipment. An Ethernet PHY transceiver is the physical-layer component that converts digital Ethernet data into differential signals suitable for twisted-pair cabling, while receiving and decoding incoming signals back into digital data. In the hierarchy of network interfaces, the PHY connects a MAC or embedded processor through a digital interface to an Ethernet medium through the 10BASE-T or 100BASE-TX analog front end. The DP83848YB/NOPB supports 10-Mbps and 100-Mbps Ethernet operation and includes JTAG support for boundary-scan-based board manufacturing, diagnostic, and test workflows. Its single-port architecture targets one copper Ethernet channel per device. The extended temperature qualification distinguishes it from commercial-temperature PHY variants when equipment must operate reliably across a broader environmental range. The device integrates the PHY functions required for copper Ethernet connectivity, including physical signaling for 10BASE-T and 100BASE-TX links and digital data exchange with the upper protocol layer. Exact clocking, register, reset, and media-access interface details should be established from the manufacturer datasheet and application circuit before schematic capture. JTAG access provides an additional board-level diagnostic route when included in the system test plan. Typical applications include industrial Ethernet controllers, factory automation equipment, embedded routers, motor-drive systems, building infrastructure, industrial communications gateways, and temperature-extended control systems. Pairing it with a suitable Ethernet-capable microcontroller or processor allows a compact embedded design to add wired network connectivity without implementing the analog PHY separately. Layout is a critical part of PHY implementation. Keep the digital interface and PHY traces short, provide continuous ground planes, decouple supply rails close to the device, and follow the manufacturer’s differential-pair and magnetics guidance to limit radiated emissions and maintain signal integrity. The exposed thermal area must also be connected and thermally coupled according to the package design guidance. This product page consolidates the exact ordering information, package characteristics, operating-temperature limits, interface features, application context, and engineering considerations needed to evaluate the DP83848YB/NOPB before beginning a board design. It also distinguishes genuine same-family drop-in candidates from options that would require package, clock, feature, or interface revalidation.

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DP83848YBX/NOPB - 10/100 Ethernet PHY | Texas Instruments
DP83848YBX/NOPB

DP83848YBX/NOPB - 10/100 Ethernet PHY | Texas Instruments

Texas Instruments DP83848YBX/NOPB is an extended-temperature 10/100-Mbps Ethernet physical-layer transceiver with JTAG support. It is intended for Ethernet network-interface designs requiring a dedicated PHY alongside a host controller or embedded processor. The device is packaged in a 48-pin HLQFP (PTB) package with an exposed thermal pad and is identified by the DP83848YBX/NOPB ordering code. An Ethernet PHY is the physical-layer component in a wired network interface. It converts logical data transmitted by a MAC or controller into electrical signaling for an Ethernet cable, and converts received cable signals back into digital data. A 10/100-Mbps PHY supports both 10 Mb/s and 100 Mb/s Ethernet operation, allowing the connected system to negotiate the line speed supported by the network and remote equipment. The DP83848YBX/NOPB combines a 10/100-Mbps Ethernet PHY, JTAG support, and extended-temperature capability in one integrated component. JTAG access supports boundary-scan and production-test workflows, while the extended-temperature grade is useful for industrial equipment, factory automation, communications equipment, and other systems that operate beyond a typical commercial temperature range. The package also provides a large exposed pad suitable for controlled thermal dissipation on multilayer PCB designs. The PHY requires a suitable digital host interface and power implementation around the IC. Its MII and RMII-related connections provide the physical interface between the PHY and the Ethernet MAC controller. The copper connection is made through transformer-coupled magnetic components, which provide galvanic isolation and impedance matching between the PHY and the network medium. Board layout must therefore account for high-speed digital signals, controlled return paths, and the isolation boundary at the network side. DP83848YBX/NOPB is appropriate for embedded Ethernet ports, industrial controllers, factory automation systems, communications equipment, test systems, and network-access appliances. It is most suitable when a board already uses a TI-compatible 48-pin HLQFP footprint and requires a 10/100-Mbps PHY rather than a 1000-Mbps Ethernet transceiver. The product page and manufacturer documentation should be consulted for the exact pin assignments, recommended magnetic component, decoupling network, media-interface details, and power-sequencing requirements before PCB release.

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DP83849CVS/NOPB - Dual-Port 10/100 Ethernet PHY | Texas Instruments
DP83849CVS/NOPB

DP83849CVS/NOPB - Dual-Port 10/100 Ethernet PHY | Texas Instruments

Texas Instruments DP83849CVS/NOPB is a commercial-temperature, dual-port 10/100-Mbps Ethernet physical-layer transceiver in an 80-pin TQFP package. It supports two Ethernet channels at 3.3 V nominal operation, and the finished device is specified for a 0 to 70 °C ambient-temperature range. The 12 mm by 12 mm surface-mount package supports compact dual-port networking equipment without requiring separate single-channel PHY devices. An Ethernet PHY is the physical-layer interface between a digital Ethernet controller and physical copper cabling. It converts digital MAC-layer symbols into electrical signaling and receives incoming signaling for conversion back into digital data. The DP83849C belongs to the PHY transceiver hierarchy, which supports Ethernet controllers, embedded systems, network switches, routers, industrial gateways, and other equipment requiring 10BASE-T or 100BASE-TX connectivity. The principal features are two independent 10/100-Mbps ports, commercial-temperature operation, 3.3 V supply operation, and an 80-pin TQFP package. Its dual-port architecture helps reduce component count in equipment with multiple copper-network connections. A system designer can assign the two ports to separate links, for example connecting an internal endpoint to both a service network and an equipment network while maintaining independent media-access control paths. The DP83849C integrates the analog physical-layer functions required for 10BASE-T and 100BASE-TX Ethernet, while the upper network interface remains the responsibility of the Ethernet MAC. This separation allows an embedded processor or dedicated network controller to handle packet processing while the PHY manages the copper-medium signaling. The resulting architecture is useful where a single controller must expose multiple network interfaces or where physical redundancy requires separate PHYs. Typical applications include industrial Ethernet switches, embedded gateways, industrial control equipment, routers, network interface cards, remote monitoring systems, and dual-port embedded networking platforms. Because the device combines two 10/100-Mbps ports, it is particularly appropriate where two copper links must be accommodated without using two separate PHY packages. Industrial equipment can also benefit from the commercial 0 to 70 °C operating range when that range matches the enclosure environment. The primary design consideration is that PHY implementation requires correct support-network connections, appropriate magnetics or coupling networks, controlled board layout, and a compatible Ethernet MAC interface. Review the manufacturer's pin description and application schematics before assigning every signal. Decoupling should be placed directly at the supply pins, and the high-speed or magnetics-related copper routing should follow the reference layout because incorrect impedance and return-path discontinuities can cause link failures or electromagnetic-interference issues. This product page combines the official device identity, ordering information, distributor listings, and cross-reference findings with practical implementation guidance. It distinguishes verified commercial-grade characteristics from unreported parameters and focuses replacement analysis on same-footprint candidates, helping engineers assess fit before committing to a PCB, temperature grade, or supported data rate.

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