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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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DP83849IDVS - Dual-Port 10/100 Ethernet PHY | Texas Instruments
DP83849IDVS

DP83849IDVS - Dual-Port 10/100 Ethernet PHY | Texas Instruments

The Texas Instruments DP83849IDVS is a dual-port 10/100-Mbps Ethernet PHY transceiver with fiber support, industrial-temperature operation from -40°C to +85°C, and an 80-pin TQFP package measuring 12 mm by 12 mm. The device provides two independently managed Ethernet physical-layer channels for copper and fiber links, making it suitable for industrial networking equipment requiring more than one 10/100-Mbps port. An Ethernet PHY is a physical-layer transceiver that converts digital data into electrical or optical signaling suitable for network transmission and receives signals back into digital data. In the product hierarchy, the DP83849IDVS is an Ethernet PHY transceiver, a network interface IC, an integrated circuit, and a semiconductor. Its dual-port architecture supports equipment that needs redundant connectivity, management access, or simultaneous links within a single device. The verified manufacturer information identifies the DP83849IDVS as a dual-port 10/100-Mbps Ethernet PHY transceiver with fiber support. Its -40°C to +85°C industrial-temperature range supports deployment in factory automation, industrial control, communications equipment, and network infrastructure. The 80-pin TQFP package provides access to the PHY functions, power connections, management interfaces, and copper or fiber-related signaling required by the device. The dual-port configuration is the primary technical distinction. Two physical-layer channels can reduce the number of separate Ethernet PHY packages needed in a multi-port system, simplifying board allocation while preserving independent 10/100-Mbps operation. Detailed electrical characteristics, register functions, media interfaces, and internal architecture are not present in the supplied source excerpts and therefore remain subject to the complete manufacturer datasheet. Typical uses include industrial Ethernet switches, remote monitoring stations, factory-floor controllers, communications equipment, and network-interface modules. The DP83849IDVS is particularly relevant where two copper ports and fiber-capable connectivity must coexist in an industrial-temperature design. The manufacturer also identifies the DP83849IDIFVS-EVK as a related evaluation platform for dual industrial-temperature PHY operation with fiber support. Designers should verify the complete pin assignment, recommended transformer or magnetics interface, strap resistors, clocking requirements, and decoupling network against the manufacturer datasheet before layout. Because the supplied data identifies a 12 mm by 12 mm 80-pin TQFP package but does not provide the complete 80-pin pinout, the package drawing cannot be safely populated here. This page combines verified manufacturer and distributor information, pricing availability status, same-family alternatives, comparison parameters, and application guidance. It also distinguishes documented facts from engineering data that remains unavailable, helping engineers evaluate the DP83849IDVS without confusing approximate or unsupported specifications.

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DP83849IDVSX/NOPB - Dual 10/100 Ethernet PHY | TI
DP83849IDVSX/NOPB

DP83849IDVSX/NOPB - Dual 10/100 Ethernet PHY | TI

Texas Instruments DP83849IDVSX/NOPB is a dual-port 10/100-Mbps Ethernet PHY transceiver with fiber support, designed for industrial-temperature operation. The device operates from a 3 V to 3.6 V supply and is packaged in an 80-pin TQFP (PFC) package measuring 12 mm by 12 mm. It provides two transmit and two receive channels for copper-based Ethernet links while also supporting fiber-oriented network designs. An Ethernet PHY transceiver is the physical-layer interface between a network controller or embedded system and an Ethernet medium. The DP83849IDID family operates within the 10BASE-T and 100BASE-TX Ethernet hierarchy, translating logical data into physical signaling and recovering data from received signals. A dual-port PHY can support two independent links, making it useful where equipment needs redundant connectivity, network management access, or simultaneous communication between wired network segments. The DP83849IDVSX/NOPB combines two 10/100-Mbps channels, a 3.3 V-class operating supply, and fiber support in one integrated component. Its industrial temperature range of -40 °C to 85 °C supports deployments across factory automation, industrial networking, wireless remote base stations, and embedded communications equipment. The 80-pin TQFP package exposes separate PHY channels and associated interface signals while enabling conventional multilayer-board assembly. The X suffix in the orderable identifier identifies the reel-packed form used for automated production, while NOPB denotes the lead-free finish. The physical package is designated PFC by Texas Instruments and contains 80 pins. Because the PHY interfaces with external magnetics, cabling, and a network controller, correct reference-design connectivity, controlled impedance routing, and correct termination are as important as the device's headline speed and port count. Typical applications include dual-port industrial Ethernet equipment, factory floor controllers, networked sensors, embedded gateways, remote base-station equipment, and systems requiring copper and fiber connectivity options. Each port can serve a 10-Mbps or 100-Mbps Ethernet segment, while the common 3.3 V supply simplifies system power architecture in industrial and communications equipment. Designers should place the PHY, its crystal or clock source, magnetic-interface components, and decoupling capacitors according to the manufacturer's reference layout. Maintain short, controlled-impedance traces for high-speed signals, provide clean return paths, and observe the exact pin assignments and external component values in the Texas Instruments datasheet before releasing a PCB layout. This product guide combines the verified ordering information, core operating characteristics, package details, and practical design considerations for the DP83849IDVSX/NOPB. It also distinguishes a true same-footprint replacement from reel and tray ordering variants, helping engineers evaluate PCB reuse without overlooking assembly, lifecycle, or signal-integrity constraints.

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DP83849IFVSX/NOPB - Dual-Port 10/100 Ethernet PHY | TI
DP83849IFVSX/NOPB

DP83849IFVSX/NOPB - Dual-Port 10/100 Ethernet PHY | TI

Texas Instruments DP83849IFVSX/NOPB is an industrial-temperature, dual-port 10/100-Mbps Ethernet physical-layer transceiver with fiber support and flexible port switching, housed in an 80-pin TQFP package measuring 12 x 12 mm. The device provides two independent Ethernet transceiver channels and operates from a 3.3 V supply. Its fiber-capable feature set allows copper and optical network connectivity to be incorporated into industrial equipment, redundant networking systems, and communication infrastructure. An Ethernet physical-layer transceiver, commonly called an Ethernet PHY, converts digital data into signals suitable for transmission over copper or fiber media while recovering incoming signals and supporting standard link negotiation functions. Within the network hierarchy, a PHY sits between a MAC or network controller and physical communication media, connecting higher-level Ethernet packet processing to 10/100-Mbps physical-layer interfaces. The DP83849IF series is intended for applications requiring more than one Ethernet port. Its dual-port architecture can support equipment-management networks, redundant links, industrial controllers, remote base stations, and network switches. Flexible port switching adds board-level configuration flexibility for designs that must route communication resources according to system operating mode. Fiber support distinguishes this variant from copper-only members of the family and supports links over optical media where distance, isolation, or electrical-environment considerations favor fiber. The industrial-temperature classification makes the device appropriate for equipment expected to operate beyond commercial-temperature environments. Its 80-pin TQFP package exposes the dual-channel circuitry and associated configuration, clock, power, media, and control interfaces. The 12 x 12 mm package is substantially larger than compact QFN Ethernet PHYs, but that footprint provides a practical path to a high pin count and can simplify routing in equipment with multiple copper and fiber interfaces. Typical applications include industrial Ethernet gateways, dual-port network controllers, remote monitoring equipment, industrial switches, remote base stations, and optical network interfaces. When two ports serve different media or redundant network paths, the transceiver should be paired with a suitable Ethernet MAC, magnetic-interface components for copper links, optical components for fiber links, and a layout that isolates sensitive clock and data signals. The primary design considerations are power-supply integrity, media-interface component selection, clock quality, thermal performance, and signal routing around the two channels. Follow the manufacturer's pin-description table and reference layout when assigning PCB tracks. Decoupling capacitors should be placed close to the appropriate supply pins, and copper and fiber media interfaces must be routed according to the recommended topology to avoid degrading signal integrity or electromagnetic performance. This page organizes the available device specifications, sourcing information, design guidance, and carefully scoped replacement information. It also distinguishes exact drop-in compatibility from related family members whose fiber support or package construction differs, helping engineers determine whether a board can be reused without layout or functionality changes.

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DP83849IVS/NOPB - Dual 10/100 Ethernet PHY, 80-TQFP | Texas Instruments
DP83849IVS/NOPB

DP83849IVS/NOPB - Dual 10/100 Ethernet PHY, 80-TQFP | Texas Instruments

The Texas Instruments DP83849IVS/NOPB is a dual-port 10/100 Mb/s Ethernet physical layer transceiver (PHYTER DUAL) with flexible port switching, factory-tested and specified for industrial temperature operation in an 80-pin TQFP (PFC) 12 x 12 mm package. It operates from a single 3 V to 3.6 V supply, supports MII, RMII and SNI media interfaces, and draws roughly 180 mA of supply current. An Ethernet PHY is the physical-layer device that converts digital MAC data into analog signaling over twisted-pair cabling, and back again. Within the network hierarchy it sits below the MAC controller (Ethernet controller -> Ethernet transceiver -> PHY -> magnetics -> RJ45) and is the block that governs link auto-negotiation, line coding, and signal integrity at the connector. A dual-port PHY with flexible port switching lets one physical transceiver serve two independent copper ports, which is valuable in industrial gateways, switches, and test equipment where port count is fixed but routing must be configurable. Key differentiating features include IEEE 802.3u compliance for 10BASE-T and 100BASE-TX, integrated cable diagnostics, JTAG 1149.1 test support for manufacturing bring-up, and the flexible port switching architecture that allows both ports to be exposed to the host, cascaded, or shared. The industrial temperature range of -40 C to +85 C and the Pb-free (NOPB) ordering code suit equipment that must survive harsh ambient conditions in factory, telecom, and building-automation cabinets. Technically, the device provides a compliant physical layer for Auto-Negotiation over twisted pair, including support for parallel detection of 10BASE-T and 100BASE-TX speeds. Because the MAC interface supports both MII, RMII and SNI, the same silicon can be paired with a wide range of host controllers, from low-cost 8-bit microcontroller-based gateways to 32-bit application processors with integrated Ethernet MACs. The 80-pin TQFP body exposes both PHY channels, bias networks, LED drivers, strap configuration pins, and reference clock and power planes on a single 0.5 mm pitch footprint. Typical applications include industrial Ethernet switches and bridges, PLC and factory automation controllers, network-attributed data acquisition equipment, telecom access units, and multi-port instrumentation racks. The DP83849IVS-EVK evaluation module from Texas Instruments is the reference platform for evaluating the device's link performance and port-switching configurations before production board layout. Designers should note that both PHY channels share a common 3.3 V supply and ground plane, so decoupling and return-path layout discipline matter more than with a single-port PHY. Keep the analog supply filtering and 1.8 V/3.3 V core rails consistent with the reference design, route differential pairs away from switching nodes, and observe the strap resistors before power-up because they define operating mode. This page consolidates manufacturer specifications, a drop-in cross-reference of compatible 80-pin TQFP PHYs, package details, and practical design notes that are normally spread across the datasheet, evaluation module documentation, and distributor listings.

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DP83849IVSX/NOPB - Dual 10/100 Ethernet PHY | Texas Instruments
DP83849IVSX/NOPB

DP83849IVSX/NOPB - Dual 10/100 Ethernet PHY | Texas Instruments

The Texas Instruments DP83849IVSX/NOPB is a dual-port 10/100-Mbps Ethernet physical-layer transceiver with flexible port switching for industrial networking equipment. The device operates from a 3.3 V supply, supports two integrated 10/100BASE-TX transceivers, and is offered in an 80-pin TQFP package measuring 12 x 12 mm. Its industrial temperature rating covers -40 °C to +85 °C. An Ethernet PHY, also called an Ethernet physical-layer transceiver, converts digital data into signaling suitable for copper-based Ethernet networks and recovers data from incoming physical-layer signals. The DP83849I belongs to the transceiver hierarchy, where PHY functionality sits below the Ethernet MAC and above the physical medium. Integrating two PHYs with flexible port switching lets one host processor manage two copper ports and route traffic according to application requirements. Key characteristics include dual-channel 10/100-Mbps operation, configurable port switching, an 80-pin TQFP package, and a 3.3 V operating supply. The part is intended for industrial Ethernet systems where temperature range and dual-port integration simplify board planning compared with using two separate single-port transceivers. Because the PHY handles the analog and digital signaling layer, the surrounding host design still requires an Ethernet MAC or a controller with an appropriate media-access interface. Typical uses include industrial Ethernet switches, network interface controllers, media-conversion equipment, embedded control systems, and dual-port industrial gateways. The flexible switching architecture can support designs in which both PHY ports contribute to a single switching function rather than operating as completely independent interfaces. Designers should confirm the required port configuration, media-access interface support, reference design topology, and magnetics requirements against the manufacturer datasheet before layout begins. A key implementation consideration is that the 80-pin TQFP footprint requires careful routing of high-speed differential pairs and supply connections. Keep the differential pairs short, continuous, and referenced to a solid ground plane, then place the interface protection and magnetic components in line with the manufacturer reference layout. Use the pin-description table in the manufacturer datasheet when assigning every PCB track, and validate cable, magnetics, and isolation requirements for the deployed industrial environment. This page organizes the manufacturer ordering information, verified distributor listings, package details, drop-in alternatives, and practical interface-design guidance into one engineering-focused reference for dual-port 10/100-Mbps Ethernet designs.

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DP83850CVF - 100Mb/s Ethernet Repeater | Texas Instruments
DP83850CVF

DP83850CVF - 100Mb/s Ethernet Repeater | Texas Instruments

Texas Instruments DP83850CVF is a 100 Mb/s TX/T4 Ethernet repeater interface controller with a 4.75 V to 5.25 V supply, 295 mA supply current, and a 132-pin PQFP package measuring 24.13 mm by 24.13 mm. The device is designed for IEEE 802.3u-compatible repeater and management interfaces, making it suitable for legacy 100BASE-TX and 100BASE-T4 network equipment. An Ethernet repeater is a physical-layer network component that regenerates and forwards received Ethernet signals between network segments. It belongs to the Ethernet interface controller category, the Ethernet interface hierarchy, and ultimately the broader semiconductor and network interface product classes. Repeaters are used where signal integrity, segment extension, or centralized network topology requires an active Ethernet signal-conditioning function rather than a conventional packet-switching bridge. The DP83850CVF operates from a single 4.75 V to 5.25 V supply and is listed at a supply current of 295 mA. Its principal data rate is 100 Mb/s. The 132-pin PQFP package provides 132 external connections for repeater, management, data, control, status, and power functions. It is offered in tray packaging according to the available component data, and distributor records identify it as a commercial-temperature-grade component. Compared with a basic Ethernet transceiver, the DP83850CVF is specifically identified as a TX/T4 repeater interface controller. Its IEEE 802.3u compatibility indicates positioning for Fast Ethernet repeater applications rather than modern switched Ethernet ports. The device can therefore be useful in legacy industrial networking, embedded communication equipment, test systems, and installed infrastructure that retains 100 Mb/s repeater-based connections. A key design consideration is that the DP83850CVF requires careful separation between high-speed signal routing, digital control interfaces, and the 5 V supply network. The exact pin names, termination requirements, and timing constraints must be taken directly from the manufacturer datasheet before layout because the supplied records do not expose a complete verified pin table. Magnetics, connector layout, controlled-impedance routing, and decoupling also remain system-level requirements for a dependable Ethernet physical-layer implementation. This page consolidates the verified manufacturer and distributor information for the DP83850CVF, documents the uncertainty where detailed technical values are unavailable, and distinguishes genuine drop-in alternatives from related but potentially different-package Ethernet controllers. It is intended to support component identification and sourcing decisions without implying that unspecified electrical or pin-level details are interchangeable.

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DP83858VF - 8-Port 100 Mb/s Ethernet Repeater | Texas Instruments
DP83858VF

DP83858VF - 8-Port 100 Mb/s Ethernet Repeater | Texas Instruments

The Texas Instruments DP83858VF is a 100 Mb/s TX/T4 Repeater Interface Controller, also identified as 100RIC8, supporting up to eight 100 Mb/s Ethernet ports in a 132-PQFP package. The supplied data specifies a 4.75 V to 5.25 V supply range, 295 mA supply current, and IEEE 802.3 compatibility. An Ethernet repeater controller is an interface IC within the Ethernet networking hierarchy. It coordinates multiple 100 Mb/s network segments, regenerates and retimes received signals, and provides the control logic needed by low-port-count managed or unmanaged repeater systems. The DP83858 targets equipment that must extend Fast Ethernet connectivity across several ports without using eight separate external repeater controllers. The controller's defining features include support for as many as eight 100 Mb/s ports, 100 Mb/s TX/T4 operation, 5 V single-supply operation, and compatibility with the IEEE 802.3 repeater requirements identified in the manufacturer documentation. The 295 mA supply-current figure provides a basis for power budgeting, while the 132-PQFP mechanical format supports a substantial pin count for port-facing signals and control functions. The DP83858 belongs to the interface-controller category rather than a general-purpose transceiver. Its TX/T4 repeater architecture is intended for high-speed Ethernet systems and legacy Fast Ethernet infrastructure. Compared with a single-port PHY, the device concentrates repeater management and media-interface control for an eight-port system, reducing board-level component count while retaining a standardized networking architecture. Typical applications include managed Fast Ethernet switches, unmanaged low-port-count switches, Ethernet repeaters, industrial network concentrators, and legacy 100BASE-TX equipment. Installation requires careful PCB routing for high-speed differential pairs, solid supply decoupling, controlled return paths, and compliance with the manufacturer's recommended layout and termination practices. The main design trade-off is specialization: DP83858VF addresses multiport Fast Ethernet repeater control rather than modern multi-gigabit or single-port integrated PHYs. Legacy-system maintenance, industrial connectivity, and equipment replication are stronger reasons to select it than new high-bandwidth designs. This page consolidates the supplied manufacturer-related data, distributor listing, package information, and Ethernet application context. It also distinguishes verified specifications from parameters that require confirmation from the complete datasheet before schematic or PCB release.

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DP83861VQM-3 - 10/100/1000 Ethernet PHY | Texas Instruments
DP83861VQM-3

DP83861VQM-3 - 10/100/1000 Ethernet PHY | Texas Instruments

Texas Instruments DP83861VQM-3 is a 10/100/1000M Ethernet physical-layer transceiver with integrated PMD sublayers and support for 10BASE-T, 100BASE-TX, and 1000BASE-T links. The device is supplied in a 208-PQFP package measuring 28 mm by 28 mm. The -3 ordering suffix identifies the grade, but further grade-specific electrical and environmental details require confirmation from the manufacturer datasheet. The DP83861 family is intended for systems that connect an Ethernet controller or digital processor to a copper network through an RJ45 magnetics interface. An Ethernet physical-layer transceiver, commonly called an Ethernet PHY, converts between digital MAC-layer data and analog signaling on twisted-pair cabling. Within the Ethernet hierarchy, the PHY operates below the MAC controller and above the physical medium. Its supported 10BASE-T, 100BASE-TX, and 1000BASE-T capabilities allow one physical interface to cover 10 Mb/s, 100 Mb/s, and 1000 Mb/s Ethernet operation. The associated GMII and MII interfaces connect the transceiver to the digital networking controller. The verified listing identifies the DP83861 as a full-featured Gigabit PHY that complies with IEEE 802.3u for 100BASE-TX and IEEE 802.3z/ab for 1000BASE-T Ethernet. It also identifies support for 10BASE-T operation. These protocol references establish the covered Ethernet generations, although individual timing, error, power, and link-performance limits are not present in the supplied source excerpts and are therefore marked for data confirmation rather than inferred. Typical implementations place the DP83861VQM-3 beside a network transformer and RJ45 connector, then connect its GMII or MII interface to an Ethernet MAC controller or communications processor. The large 208-pin PQFP provides a substantial mixed-signal interface, making careful grounding, controlled return paths, and high-speed differential routing important. Designers should separate analog PHY and magnetics-side return currents from digital processor and memory domains while observing the package and layout guidance in the manufacturer documentation. Applications include industrial Ethernet controllers, embedded gateways, network switches, test equipment, and communications modules requiring copper Ethernet connectivity. The part may also support migration paths from 10/100-Mb/s equipment to 1-Gb/s links when the complete PHY, transformer, connector, clocking, and firmware architecture can support the higher data rate. Automatic-negotiation details, supported media categories, cable reach, and media-access configuration must be confirmed in the manufacturer datasheet before final design release. This page consolidates the supplied distributor listings, package information, protocol references, sourcing data, and engineering guidance into a structured component record. It distinguishes verified facts from parameters that remain unavailable in the supplied excerpts. Any replacement decision should be based on pin-level comparison, media support, electrical limits, clock requirements, firmware register compatibility, and PCB-level validation rather than package naming alone.

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