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ENC28J60-I/ML - 10BASE-T Ethernet Controller | Microchip
The Microchip Technology ENC28J60-I/ML is a 28-pin, 10BASE-T stand-alone Ethernet controller with an integrated MAC and PHY, 8 Kbytes of packet-buffer RAM, and an SPI serial interface in a 28-QFN package measuring 6 mm by 6 mm. It combines Ethernet physical-layer and media-access-control functions in one component, reducing the board area and external circuitry required for an embedded network interface. An Ethernet controller is a semiconductor that manages packet transmission and reception between a host processor and an Ethernet physical layer. The ENC28J60 belongs to the stand-alone Ethernet controller category rather than a conventional high-speed Ethernet MAC IC. Its integrated 10BASE-T PHY connects directly to 10BASE-T network hardware, while the SPI interface allows a microcontroller or other SPI host to access registers and packet buffers. Key features include IEEE 802.3-compatible 10BASE-T operation, an integrated MAC and PHY, 8 Kbytes of transmit and receive packet buffer memory, and a compact 28-QFN package. The SPI interface provides a straightforward connection to embedded processors, while the integrated PHY reduces the number of active components needed for a basic Ethernet endpoint. The 6 mm by 6 mm package also supports space-constrained embedded equipment. The ENC28J60-I/ML is intended for low-speed 10BASE-T networks rather than Fast Ethernet designs. Its architecture is appropriate when low network throughput, low component count, and a simple host interface are more important than 100BASE-TX performance. The ENC28J60 supports 8 Kbytes of buffer RAM for packet handling, while the SPI host controls the device through its command and register set. Typical applications include embedded Ethernet bridges, industrial monitoring equipment, access-control systems, building automation nodes, laboratory instruments, and small network-connected controllers. These systems can use the integrated PHY to avoid a separate Ethernet transceiver while retaining a conventional SPI connection to a microcontroller. A primary design consideration is the distinction between the 10BASE-T ENC28J60 and the 100BASE-TX ENC424J600. The ENC424J600 supports faster Ethernet but uses a different package and requires a different PCB layout. Designs should not treat those devices as footprint-compatible replacements. Confirm magnetics, RJ-45 integration, grounding, decoupling, and signal-integrity requirements in the manufacturer application guidance before releasing the layout.
ENC28J60-I/SO - 10BASE-T SPI Ethernet Controller | Microchip
The Microchip Technology ENC28J60-I/SO is a 28-pin stand-alone 10BASE-T Ethernet controller with an integrated MAC, integrated 10BASE-T PHY, 8 KB packet-buffer SRAM, and an SPI serial interface. It operates from a 3.3 V supply, supports an IEEE 802.3-compatible Ethernet interface, and is packaged in a 28-pin SOIC. The device is intended for embedded systems that need a compact Ethernet endpoint without a separate Ethernet controller and PHY. An Ethernet controller is an interface IC that connects a microcontroller or processor to a physical Ethernet network. The MAC manages Ethernet frames and access to the transmit/receive buffer, while the PHY handles the physical-layer signaling. The ENC28J60 combines these functions with an SPI host interface, making it part of the network-controller and interface-IC hierarchy rather than a general-purpose microcontroller. Verified product information identifies an integrated MAC and PHY, 8 KB of buffer RAM, a 10BASE-T Ethernet interface, and SPI connectivity. The ENC28J60 is designed to operate with a 25 MHz parallel-resonance crystal connected between OSC1 and OSC2, as described in the manufacturer data sheet. A 3.1 V to 3.6 V supply range and -40°C to +85°C operating range are reported by the retrieved distributor data. Typical uses include microcontroller-based monitoring equipment, industrial control modules, data loggers, laboratory instruments, IoT gateways, and embedded network bridges. The SPI host interface allows the host processor to configure the controller and transfer Ethernet frames, while the integrated PHY reduces the number of external network-interface components. Designers should provide the required clock network, bypass capacitors, Ethernet magnetics, RJ45 connectivity, and a power supply that stays within the verified 3.1 V to 3.6 V range. Firmware must implement the network stack required by the application because the verified product description identifies the device as a controller with SPI rather than a device with an integrated TCP/IP stack.
ENC28J60-I/SP - 10BASE-T SPI Ethernet Controller | Microchip
The Microchip Technology ENC28J60-I/SP is a 28-pin, 10BASE-T stand-alone Ethernet controller with an integrated MAC and PHY, 8 Kbytes of buffer RAM, and an SPI serial interface, supplied in a 28-pin SPDIP package. Its 10 Mbps Ethernet capability and three-wire SPI host interface make it suitable for embedded systems that need a compact, low-cost network connection without a dedicated external Ethernet controller. The device operates from a 3.1 V to 3.6 V supply and supports the industrial temperature range of -40°C to +85°C according to the verified product data. What is an Ethernet controller? An Ethernet controller is an interface IC that connects a host processor to a physical Ethernet network. The ENC28J60 family combines a Media Access Control layer, a 10BASE-T physical layer, packet buffer memory, and an SPI interface in one device. In the hierarchy of semiconductor components, it is an Ethernet interface controller, a network interface IC, and a power-management-compatible embedded peripheral for connected embedded products. The principal verified features are the integrated MAC and PHY, 8 Kbytes of buffer RAM, SPI connectivity, 10BASE-T operation at 10 Mbps, a 3.1 V to 3.6 V operating supply range, a maximum supply current of 180 mA, and 28 pins. The integrated PHY reduces the number of external network-interface components required, while the serial interface allows a microcontroller to control packet transfer over SPI. The -40°C to +85°C industrial range makes the -I/SP grade appropriate for industrial and other extended-temperature equipment, subject to application-specific qualification. The ENC28J60-I/SP is a hardware network interface rather than a complete TCP/IP stack. The host processor therefore requires suitable networking software to implement the required protocols. Its 10BASE-T operation is appropriate for legacy or cost-sensitive embedded Ethernet links, but it is not a 100BASE-T replacement. The integrated 8 Kbytes of buffer RAM helps coordinate packet storage between the Ethernet interface and the SPI host, while the small 28-pin package simplifies prototype and through-hole assembly. Typical uses include industrial monitoring equipment, embedded control systems, serial-to-Ethernet gateways, automated test equipment, and connected instrumentation. In these applications, the controller can sit between a microcontroller and an RJ45 or magnetics-based Ethernet network interface, while the host processor handles application data and higher-level networking. The SPI bus provides a practical connection to microcontrollers and other embedded processors. A key design consideration is that the ENC28J60-I/SP is designed around 10BASE-T operation and requires careful implementation of the network interface, clock circuitry, decoupling, and PCB layout. Verify the complete pin assignment, recommended external components, and timing requirements against the manufacturer datasheet before layout release. This page combines verified manufacturer and distributor information, practical application guidance, and explicit comparison data to support component selection.
ENC28J60-I/SS - 10BASE-T Ethernet Controller | Microchip
The Microchip Technology ENC28J60-I/SS is a 28-pin, stand-alone 10BASE-T Ethernet controller with an integrated MAC and PHY, 8 KB of buffer RAM, and an SPI serial interface in a 28-pin SSOP package. It operates from a 3.1 V to 3.6 V supply at an indicated supply current of 180 mA, while supporting an industrial operating temperature range of -40°C to +85°C. The integrated Ethernet functionality allows a host microcontroller to communicate over 10BASE-T without adding a separate MAC or physical-layer transceiver. An Ethernet controller is a network-interface semiconductor that connects an embedded host to a physical Ethernet network. The ENC28J60-I/SS combines three major functions in one device: a Media Access Controller for Ethernet frame handling, a 10BASE-T PHY for physical-layer signaling, and an SPI interface for register access and packet-buffer transfers. Within the broader hierarchy, it is an Ethernet interface controller, an interface IC, a network semiconductor, and ultimately a power-management-independent embedded communications component. Key features include an integrated MAC and PHY, 8 KB of buffer RAM, an SPI host interface, 10BASE-T operation, and support for a 25 MHz parallel-resonance crystal. Its 28-pin SSOP package provides a relatively compact solution for embedded equipment. The -40°C to +85°C temperature range distinguishes the industrial-grade suffix from the standard ENC28J60/SS option. Because Ethernet magnetics, connectors, clocking, isolation, and careful board layout are still required, integration reduces host-side complexity without eliminating a complete network interface design. Technically, the ENC28J60-I/SS uses its integrated PHY to interface with 10BASE-T Ethernet while the MAC manages Ethernet frames and the host processor accesses device registers and packet data through SPI. The manufacturer datasheet states that the oscillator should operate at 25 MHz with a parallel-resonance crystal connected to OSC1 and OSC2; using a series-resonance crystal may produce a frequency outside the crystal manufacturer's specification. This clock detail is critical because SPI timing, Ethernet operation, and host communication depend on stable oscillator behavior. Typical applications include industrial automation controllers, embedded network gateways, environmental monitoring equipment, access-control terminals, building-automation nodes, and compact IoT devices. The controller is especially useful when a system already contains a microcontroller with SPI and only requires 10 Mb/s Ethernet rather than faster 100 Mb/s networking. Software support and PHY-level configuration remain part of the design because the host must service the controller and apply the required Ethernet termination and magnetics. Designers should reserve solid copper for the exposed thermal requirements of the SSOP, verify the oscillator network against the manufacturer guidance, and route the Ethernet differential pair as a controlled-impedance pair away from noisy switching circuits. The 3.1 V to 3.6 V operating range also requires a regulator with adequate transient margin for the indicated 180 mA supply current. Magnetic isolation and an RJ45-compatible transformer network remain external to this device. This product record combines manufacturer specifications, distributor pricing, verified package information, same-package alternatives, and practical integration guidance. It adds direct comparison and design notes that help distinguish a true pin-compatible substitution from devices that merely offer Ethernet connectivity through a different package or interface architecture.
ENC28J60/ML - 10BASE-T Ethernet Controller | Microchip
The Microchip ENC28J60/ML is a 28-pin standalone 10BASE-T Ethernet controller with an integrated MAC and PHY, 8 Kbytes of buffer RAM, and an SPI serial interface, supplied in a 28-QFN (6x6 mm) package. It connects a microcontroller to 10 Mbit/s Ethernet while handling packet buffering and physical-layer transmission, reducing host-side network hardware requirements. An Ethernet controller is an interface IC that connects a host processor to a physical network. In the ENC28J60 architecture, the MAC handles frame processing, the PHY handles 10BASE-T signaling, and the SPI interface communicates with the microcontroller. Unlike devices with an internal TCP/IP stack, the ENC28J60 requires the connected firmware to implement the higher-level network protocol. Key features include a 28-QFN (6x6 mm) package, integrated MAC and PHY, 8 Kbytes of buffer RAM, and an SPI interface. The manufacturer describes it as a compact solution intended to reduce board space, complexity, and cost. The device is suited to embedded systems that need an economical wired network connection rather than high-throughput Ethernet. The ENC28J60 is designed around a 25 MHz crystal oscillator connected between OSC1 and OSC2. Microchip specifically states that the design requires a parallel-resonance crystal and warns that a series-resonance crystal may produce an out-of-spec operating frequency. The SPI host interface and integrated PHY make the controller practical for small embedded control, monitoring, and data-acquisition equipment. Typical applications include industrial control nodes, building-automation terminals, environmental monitoring, remote instrumentation, embedded gateways, and low-bandwidth supervisory systems. Compared with larger SPI Ethernet controllers such as W5500, the ENC28J60 provides a smaller integrated solution but does not provide the same level of hardware-supported TCP/IP functionality. It is therefore most appropriate where firmware already contains the required network stack. A key design consideration is matching the crystal, decoupling, Ethernet magnetics, and PCB layout to the manufacturer recommendations. The 6x6 mm QFN package also requires careful assembly and land-pattern planning. Designers should verify the exact package, pinout, electrical limits, and temperature variant against the current Microchip datasheet before releasing a production PCB.
ENC28J60/SO - 10BASE-T SPI Ethernet Controller | Microchip
The Microchip Technology ENC28J60/SO is a stand-alone 10BASE-T Ethernet controller with an integrated IEEE 802.3 MAC and physical layer, an SPI host interface, 8 KB of dual-port packet-buffer SRAM, internal DMA, and hardware-assisted checksum calculation. The device operates from a 3.1 V to 3.6 V supply, consumes 160 mA as listed in the verified distributor specifications, and is packaged in a 28-pin SOIC. An Ethernet controller is an interface integrated circuit that connects a microcontroller or embedded processor to a physical network. Within the product hierarchy, the ENC28J60 is a network interface controller and Ethernet interface IC. It implements the lower-level MAC and PHY functions required for 10BASE-T networking, while the connected host processor must provide the upper-layer networking functions. The SPI interface allows the device to be used with embedded systems that do not include an Ethernet media-access controller. Key features include IEEE 802.3 compatibility, an integrated 10BASE-T PHY, an 8 KB transmit-and-receive packet buffer, programmable packet filtering, internal DMA for packet throughput, and hardware-assisted checksum calculation. Two LED outputs provide link and network-activity indication. A 25 MHz crystal is required for the oscillator, and the manufacturer specifies a parallel-resonance crystal in the oscillator circuit. The controller combines hardware packet movement and filtering with a host-driven SPI protocol. Its internal DMA helps move packet data without requiring the host controller to handle every byte through the serial interface. The 8 KB SRAM supports buffering for received and transmitted Ethernet frames, while programmable filters can limit which destination addresses or packet types are accepted. Hardware-assisted checksums reduce host-processing requirements for supported network protocols. Typical uses include embedded web servers, industrial monitoring equipment, building-automation nodes, environmental data loggers, and compact IoT gateways. The ENC28J60 is most appropriate when only 10 Mb/s Ethernet is required and the host has enough flash and processing capacity to run a TCP/IP stack. It is less appropriate where 100 Mb/s operation or an integrated hardware TCP/IP stack is required without redesign. Designers should place the 25 MHz crystal and its required load components close to OSC1 and OSC2, route the Ethernet magnetics and network interface carefully, and follow the manufacturer datasheet for termination, decoupling, and exposed-pad or thermal-layout requirements. Because the exact verified pin assignments were not included in the supplied source data, this page does not publish a potentially inaccurate pinout. This page consolidates the verified manufacturer and distributor information, distinguishes genuine same-package alternatives from functional substitutes, and adds practical selection guidance and engineering caveats beyond the basic catalogue listing.
ENC28J60/SP - 10BASE-T Ethernet Controller | Microchip
The Microchip Technology ENC28J60/SP is a standalone Ethernet controller with an integrated 10BASE-T PHY, a 3.1 V to 3.6 V supply range, an SPI host interface, and a 28-pin DIP package. It combines a 10BASE-T media access controller with 8 KB of transmit and receive packet buffer SRAM, hardware-assisted checksum calculation, and an internal DMA module for embedded networking designs. An Ethernet controller is an interface integrated circuit that connects a host processor to a physical Ethernet network. The ENC28J60 integrates the media access controller, 10BASE-T physical layer, packet memory, and serial host interface, allowing a microcontroller or other SPI-capable processor to communicate through a single Ethernet connector and magnetic interface. This integrated architecture is a member of the interface IC, Ethernet controller, and network interface controller hierarchy. The device supports IEEE 802.3-compatible 10BASE-T operation, full-duplex and half-duplex communication, and an SPI interface for host access. Its 8 KB packet buffer reduces the amount of data that the host processor must handle directly, while internal DMA and hardware-assisted checksum calculation improve packet-processing efficiency. Two LEDs provide link and network-activity indication. The ENC28J60 is designed around a 25 MHz crystal oscillator connected through OSC1 and OSC2. The manufacturer datasheet specifically calls for a parallel-resonance crystal, making oscillator-component selection and layout important to the stability of Ethernet timing. The controller accepts a 3.1 V to 3.6 V supply and is intended for embedded industrial automation, building automation, home control, security, and VoIP equipment. Typical implementations place the ENC28J60 beside a 10BASE-T magnetic jack and connect it to a microcontroller through SPI. The host driver manages Ethernet registers, interrupts, packet buffers, and the physical layer. Compared with discrete Ethernet solutions, the integrated MAC and PHY reduce board area and component count while retaining a software-controlled packet-processing architecture. PCB implementation should keep the 25 MHz crystal and its load components close to OSC1 and OSC2, provide the required bypass capacitance at the supply pins, and follow the manufacturer layout guidance for the integrated PHY and magnetic-jack interface. The 28-pin DIP package favors through-hole prototyping, but production designs may require a smaller surface-mount package variant. This page combines verified manufacturer and distributor information, sourcing details, application guidance, and an honest assessment of drop-in replacement options. It is intended to help engineers determine whether the ENC28J60/SP fits the required electrical, mechanical, firmware, and supply-chain constraints.
ENC28J60/SS - 10Mbps SPI Ethernet Controller | Microchip
The Microchip Technology ENC28J60/SS is a 10 Mbps stand-alone Ethernet controller with an integrated MAC, 10BASE-T PHY, 8 KB of buffer RAM, and an SPI serial interface in a 28-pin SSOP package. It operates from a 3.1 V to 3.6 V supply and supports an industrial temperature variant family identified by the ENC28J60-I/SS ordering code. What is a stand-alone Ethernet controller? It is an Ethernet interface integrated circuit that connects a host microcontroller or processor to a physical Ethernet network. The ENC28J60/SS combines MAC and PHY functions with packet buffering, while the host communicates through SPI rather than a parallel bus. Its 10 Mbps 10BASE-T capability makes it suitable for legacy and low-bandwidth embedded networks, especially where board area and system cost are important. Key verified features include 10 Mbps Ethernet operation, integrated MAC and PHY, 8 KB of buffer RAM, SPI interface, a 28-pin SSOP package, and a 3.1 V to 3.6 V supply range. The controller is designed to reduce host-side interface complexity and can be used in systems where the connected host already has sufficient processing capacity for the required networking software. The ENC28J60/SS includes the MAC and PHY in one package, allowing an embedded system to implement Ethernet communication without a separate external Ethernet PHY. Its buffer RAM supports packet handling between the SPI host interface and the Ethernet physical layer. The manufacturer product page identifies it as a 28-pin 10BASE-T stand-alone Ethernet controller with 8 Kbytes of buffer RAM. Typical applications include embedded control systems, industrial automation equipment, data loggers, building automation controllers, network-connected sensors, and microcontroller platforms requiring 10BASE-T connectivity. The SPI interface allows the device to be paired with host controllers such as STM32, ATmega, PIC, or other embedded processors that provide the required firmware. When designing around the ENC28J60/SS, confirm the 3.1 V to 3.6 V operating supply, use the manufacturer-recommended 25 MHz parallel-resonance crystal arrangement, and provide the required magnetic-interface and Ethernet physical-layer components. Verify the exact SSOP footprint, pin assignment, thermal conditions, and host timing requirements against the manufacturer datasheet before layout release.
ENC28J60T-I/ML - 10BASE-T Ethernet Controller | Microchip
The Microchip Technology ENC28J60T-I/ML is a stand-alone 10BASE-T Ethernet controller with an integrated MAC and PHY, 8 KB of transmit and receive packet buffer RAM, and an SPI serial interface, housed in a 28-pin QFN package. It combines Ethernet frame handling and physical-layer networking in one device, reducing the need for a separate Ethernet PHY in embedded systems. A stand-alone Ethernet controller is an interface IC that connects a microcontroller or embedded processor to a wired Ethernet network. The ENC28J60 family provides IEEE 802.3-compatible 10BASE-T operation, hardware packet filtering, programmable receive filtering, and an SPI host interface. This product type sits within interface controllers, communication ICs, semiconductors, and the broader embedded networking hierarchy. Key features include an integrated 10BASE-T PHY, integrated Ethernet MAC, 8 KB of dual-port buffer SRAM, and a serial SPI interface. The controller is designed for space-constrained embedded equipment where a compact package and a single-network interface simplify board design. Its buffered packet architecture allows the host processor to handle Ethernet traffic without requiring a large external network-memory device. The ENC28J60T-I/ML uses a 3.3 V supply and is offered in a 28-pin QFN package with a 6 x 6 mm footprint. The manufacturer describes the ENC28J60 as a small-footprint solution intended to reduce complexity, board space, and system cost. The SPI interface also provides a straightforward connection to microcontrollers that have SPI peripherals, while the integrated PHY handles the physical 10BASE-T network connection. Typical applications include VoIP equipment, industrial automation, building automation, home control, security systems, and instrumentation. In each case, the controller can provide network connectivity to an embedded host processor without requiring a separate Ethernet MAC implementation. It is particularly useful where 10BASE-T connectivity, modest network throughput, and compact board area are more important than fast Ethernet performance. When designing around the ENC28J60T-I/ML, verify the host processor's SPI voltage and timing requirements, provide the required decoupling and Ethernet magnetics interface specified by the manufacturer, and confirm that the selected package and exposed-pad layout match the PCB footprint. Use the manufacturer datasheet's pin-description and layout tables when assigning nets and defining the physical implementation. This product page combines the manufacturer's ENC28J60 technical description, the exact ENC28J60T-I/ML package and ordering information, pricing evidence rules, and practical integration guidance for engineers evaluating embedded Ethernet designs.
ENC28J60T-I/SO 10BASE-T Ethernet Controller | Microchip Technology
Microchip Technology ENC28J60T-I/SO is a 28-pin stand-alone Ethernet controller with an integrated MAC and 10BASE-T PHY, an SPI serial interface, and 8 Kbytes of transmit and receive packet buffer SRAM. The device operates from a 3.3 V supply and is packaged in a 28-SOIC format. Its integrated Ethernet interface is intended for embedded systems that require a compact, low-cost network connection without a separate Ethernet transceiver or dedicated network controller. An Ethernet controller is a semiconductor that manages frame transmission, reception, buffering, packet filtering, and physical-layer signaling. The ENC28J60 family combines the functions of an Ethernet MAC, a 10BASE-T PHY, and an SPI host interface into one device. This integration reduces the number of external components required on a controller-based product while preserving a standardized communication path to the host processor. The ENC28J60T-I/SO supports IEEE 802.3-compatible Ethernet operation and provides programmable packet filtering, multicast filtering, programmable LED indication, a wake-up function, and power-on reset. Its 8 Kbytes of dual-port buffer SRAM helps the controller manage incoming and outgoing Ethernet packets while the host processor communicates over SPI. These features make the device suitable for small embedded platforms where a full-size network interface would add unnecessary board area and system complexity. Typical applications include VoIP terminals, industrial automation equipment, building automation controllers, home-control products, security systems, and instrumentation. The SPI host interface allows the device to be connected to microcontrollers and other embedded processors that can configure the Ethernet controller through registers and interrupt or polling mechanisms. The integrated PHY also simplifies the Ethernet magnetics and connector arrangement when implemented according to the manufacturer’s reference design. The 3.3 V supply requirement, 10BASE-T data rate, 28-SOIC package, and integrated MAC/PHY architecture should be checked against the host processor’s I/O voltage, SPI timing, Ethernet magnetics, and isolation requirements. Because the Ethernet controller includes sensitive analog and digital functions, follow the manufacturer’s recommended decoupling, grounding, trace-routing, and magnetics-layout guidance. The device is also limited to 10BASE-T operation, so it should not be treated as a drop-in solution for 100BASE-TX or gigabit Ethernet designs. This page combines the manufacturer’s product description, distributor package information, electrical limits, application guidance, and drop-in replacement analysis to help engineers evaluate the ENC28J60T-I/SO before schematic capture and PCB layout.
ENC28J60T-I/SS - 10BASE-T Ethernet Controller | Microchip
The Microchip Technology ENC28J60T-I/SS is a standalone 10BASE-T Ethernet controller with an integrated MAC and PHY, 8 KB of buffer RAM, and an SPI host interface in a 28-pin SSOP package. It operates from a 3.1 V to 3.6 V supply and supports SPI-based communication with a host microcontroller. The controller is designed to add wired Ethernet connectivity to embedded systems without requiring a separate MAC, physical-layer transceiver, or host-side Ethernet protocol stack. An Ethernet controller is an interface IC that manages the hardware-level transfer of frames between a host processor and a physical network. The ENC28J60 combines three principal functions in one device: a media access controller for Ethernet frame handling, a 10BASE-T PHY for connection to twisted-pair cabling, and a serial peripheral interface for communication with the host. This integration places the part within the broader hierarchy of network interface controller, interface IC, and semiconductor categories. Key features include support for IEEE 802.3 specifications, multiple packet-filtering schemes, an internal DMA module for fast data throughput, hardware-assisted checksum calculation, and an interrupt output for host notification. Its 8 KB buffer RAM allows Ethernet data to be buffered between network activity and host transactions. The 3.1 V to 3.6 V operating range and approximately 160 mA supply current are suitable for systems using a regulated 3.3 V rail. The ENC28J60 architecture separates host access from Ethernet processing through SPI while handling lower-level network tasks internally. Hardware-assisted checksums reduce processing load on the host microcontroller, while the internal DMA supports efficient movement of packet data. The manufacturer datasheet also notes that the oscillator requires a parallel-resonance crystal and provides examples for both crystal and external-clock arrangements, giving designers several implementation options for the timing subsystem. Typical applications include industrial Ethernet nodes, building-automation endpoints, embedded web servers, data loggers, access-control terminals, and IoT gateways that require a compact 10BASE-T network interface. It is especially useful where the host already has an SPI peripheral and board area is constrained. Because the controller supports only 10BASE-T, design engineers should evaluate it against current network requirements rather than assume support for 100BASE-TX or gigabit Ethernet. A key design consideration is the Ethernet physical-layer implementation. Follow the manufacturer’s recommended oscillator, magnetic-isolation, and termination circuits, and place the high-speed differential network section away from noisy digital and switching-power circuitry. Because the host must initialize the controller and interpret interrupts, firmware support for the ENC28J60 register and buffer model is also required. This product page combines the manufacturer’s core controller specifications with practical implementation guidance, qualified comparison points, and design notes that help engineers evaluate the ENC28J60T-I/SS before committing a compact embedded Ethernet design to production.
ENC28J60T/ML - 10Mbps SPI Ethernet Controller | Microchip
The Microchip Technology ENC28J60T/ML is a 28-pin, 10Mbps stand-alone Ethernet controller with an integrated MAC and 10BASE-T PHY, an 8 Kbyte packet buffer, and an SPI serial interface in a 28-VQFN exposed-pad package. It operates from a 3.1 V to 3.6 V supply and is designed to add Ethernet connectivity to microcontrollers, programmable controllers, and other embedded systems equipped with SPI. An Ethernet controller is an interface IC that manages the lower-level tasks required for a host processor to communicate over an Ethernet network. Within the product hierarchy, the ENC28J60 is a stand-alone Ethernet controller, a network interface controller with integrated media-access control and physical-layer functions. Its combination of an SPI host interface and integrated 10BASE-T PHY reduces the number of external network-interface components required by an embedded design. Key features include IEEE 802.3-compatible Ethernet operation, 10Mbps networking, an integrated MAC and 10BASE-T PHY, and 8 Kbytes of transmit and receive packet-buffer SRAM. The SPI interface allows register and buffer access from a host controller. The device is supplied in a compact 28-VQFN package with an exposed pad, making it suitable for space-constrained embedded equipment where soldered surface-mount construction is preferred. The ENC28J60 architecture places the Ethernet MAC and PHY inside one package while retaining packet storage on the controller. This allows a host microcontroller to exchange Ethernet frames through SPI without implementing the complete Ethernet physical and data-link layers itself. According to the Microchip ENC28J60 documentation, the controller meets the relevant IEEE 802.3 requirements for 10BASE-T operation and supports both transmission and reception through the integrated packet buffer. Typical applications include industrial monitoring equipment, building-automation endpoints, environmental sensors, connected control systems, and compact embedded gateways. The controller is particularly useful when the host processor needs only 10BASE-T connectivity and has limited I/O or processing capacity. SPI-based register access also makes the ENC28J60 practical for platforms where parallel host buses would consume too many pins. Designers should provide a compliant 3.3 V supply, adequate 10BASE-T magnetic-interface components, and layout that minimizes Ethernet signal integrity and EMI issues. The exposed thermal pad requires suitable PCB copper and thermal-via treatment. Firmware must also handle ENC28J60 initialization, interrupt servicing, descriptor management, and network-driver behavior rather than treating the controller as a protocol-independent plug-in peripheral. This page consolidates verified manufacturer and distributor information, package details, sourcing data, and replacement guidance. It also separates true same-footprint candidates from cross-package Ethernet alternatives so engineers can evaluate PCB compatibility before making a design change.
ENC28J60T/SO - 10BASE-T Ethernet Controller with SPI | Microchip
The Microchip ENC28J60T/SO is a 28-pin stand-alone Ethernet controller with an integrated 10BASE-T PHY and MAC, an SPI host interface, and 8 Kbytes of packet buffer RAM, powered from a 3.1 V to 3.6 V supply and offered in a 28-SOIC package. An Ethernet controller (also called a network interface controller or NIC) is a semiconductor that sits between a host microcontroller and the physical copper network. It performs the hardware-intensive layer-1 and layer-2 work — line coding, Manchester encoding, preamble generation, CRC generation and checking, frame filtering — so the host only has to move payload bytes over a simple serial bus. The ENC28J60T/SO belongs to the controller IC family, which is itself a subset of interface ICs within the broader semiconductor category. Key features include full IEEE 802.3 compliance for 10BASE-T half-duplex Ethernet, a full duplex-capable integrated MAC, a hardware-assisted checksum calculation engine for TCP, UDP, and IP headers, an internal DMA engine for high-throughput data movement, several programmable packet filtering schemes, and two dedicated LED outputs for link and network-activity indication. A non-blocking internal DMA engine means the host SPI bus is not stalled during frame processing. Technically, the device is a 3.3 V CMOS part with a maximum supply current of 160 mA, and its SPI CS, SCK, and SI inputs plus the RESET input are 5 V tolerant, allowing direct hookup to legacy 5 V host logic in many designs. An 8 Kbyte transmit/receive dual-port buffer SRAM holds packets in either direction, while the SPI interface runs up to 20 MHz-class host clocking and uses a simple four-wire serial protocol (SCK, SI, SO, CS) plus an interrupt output and a reset input. External magnetics — an Ethernet isolation transformer with integrated center-tap bias — and an RJ45 jack are required because the PHY itself is analog and transformer-based. Typical applications include low-cost embedded web servers, industrial sensor gateways, PLC and HMI retrofit modules, home-automation nodes, printers, and industrial data loggers that need TCP/IP connectivity without an external Ethernet bridge. The device is also a common choice in maker and education platforms because the SPI interface is simple and a complete TCP/IP stack is available in widely used open-source libraries. Design considerations center on the analog side of the board: keep the RBIAS network, 25 MHz crystal, 1.0 uF and 1.0 uF bias capacitors, and the PHY-to-transformer trace short and isolated from switching nodes, and provide a solid ground plane directly under the analog supply pins. On the digital side, add a level translator if the host runs at 5 V and drives the device's interrupt or receives its SPI output, because those outputs are 3.3 V CMOS levels. This page consolidates the manufacturer datasheet details, pin and package constraints, package-qualified drop-in alternatives, and practical layout and power notes for engineers who need a compact single-chip 10BASE-T network port rather than a modular SPI-to-Ethernet solution.
ENC28J60T/SS - 10Mbps SPI Ethernet Controller | Microchip
The Microchip Technology ENC28J60T/SS is a standalone 10BASE-T Ethernet controller with an integrated MAC and PHY, 8 KB of buffer RAM, and an SPI serial interface. It operates from a 3.1 V to 3.6 V supply and supports 10 Mbps Ethernet in a 28-pin SSOP package. By combining the Ethernet controller and physical-layer functions in one device, the ENC28J60T/SS provides a compact network interface for embedded systems. An Ethernet controller is an interface IC that connects a host processor to a physical Ethernet network. The ENC28J60 belongs to the broader Ethernet interface controller and network interface controller hierarchy, with the SPI interface acting as its connection to the embedded host. Its integrated MAC organizes frame transmission and reception, while the integrated 10BASE-T PHY handles the physical-layer signaling required by a 10BASE-T network. The primary feature set includes support for 10 Mbps operation, an 8 KB packet buffer, SPI host connectivity, and an integrated MAC and PHY. The 3.1 V to 3.6 V operating supply range places the device in a 3.3 V system environment, while the typical supply-current listing of 160 mA provides a useful baseline for power budgeting. The 28-SSOP package measures 5.30 mm wide by 0.209 inch, supporting compact embedded board layouts without requiring a large QFN footprint. The architecture makes the ENC28J60T/SS suitable for designs where an MCU or MPU lacks a native Ethernet MAC. The host communicates through the SPI interface, while the controller handles Ethernet framing, address filtering, buffering, and physical-layer communication. Packet filtering reduces the processing burden on the host by allowing selected traffic to be filtered within the controller, and the 8 KB buffer provides temporary storage for frames moving between the SPI host and Ethernet network. Typical uses include industrial automation controllers, embedded monitoring equipment, access-control terminals, building-network nodes, and IoT gateways with legacy 10BASE-T infrastructure. The part is most appropriate where 10 Mbps is sufficient and the PCB already includes a suitable Ethernet transformer, magnetics, connector, protection network, and controlled-impedance layout. Designers should allocate a 3.3 V supply with adequate transient margin and account for the listed 160 mA operating current when sizing regulators and copper. The SPI bus must meet the controller's timing requirements, while the Ethernet magnetics and copper path must be laid out according to the manufacturer datasheet. Firmware must also support the ENC28J60 register model, packet filtering, buffer management, and link-state behavior. This page combines verified manufacturer and distributor data with application guidance, comparison rows, design notes, and sourcing information. It distinguishes confirmed attributes from unavailable details so engineers can identify the documented 10 Mbps, 3.3 V, 8 KB, and 28-SSOP characteristics without relying on an unverified substitute specification.
ENC424J600-I/ML 10/100 Ethernet Controller | Microchip
The Microchip Technology ENC424J600-I/ML is a stand-alone 10/100 Base-T Ethernet interface controller with an integrated MAC and PHY, an industry-standard SPI or parallel interface, and a 44-QFN package. It operates from a 3 V to 3.6 V supply, supports an operating temperature range of -45°C to +85°C, and is identified in the supplied data as a 10 Mbps Ethernet controller with 117 mA supply current. What is an Ethernet controller? An Ethernet controller is an interface IC that connects an embedded processor or microcontroller to an Ethernet physical network. This particular device combines a Media Access Control layer, or MAC, with a physical-layer transceiver, or PHY, allowing a host processor to exchange Ethernet traffic through SPI or a parallel host interface. It supports the IEEE 802.3 requirements applicable to 10Base-T and 100Base-TX Ethernet, including optional auto-negotiation behavior described by the manufacturer. The ENC424J600 family is intended to reduce the host-side implementation burden of a wired Ethernet connection. The manufacturer describes a low-cost stand-alone controller with packet filtering and a factory-programmed unique MAC address in product-page results. The supplied search data also identifies a 24-Kbyte on-chip RAM buffer for the family, while the ENC624J600 family shares the broader 10/100 Ethernet controller positioning. Exact feature availability for this orderable MPN should be confirmed in the manufacturer datasheet. The controller is relevant to embedded systems that need 10/100 Ethernet connectivity without implementing the physical network interface directly. Its SPI interface is useful for microcontrollers with limited parallel I/O, while the parallel interface can serve systems with an external bus. The -45°C to +85°C operating range covers industrial temperature requirements, subject to the complete electrical and qualification limits in the datasheet. Typical uses include industrial monitoring equipment, embedded control systems, data-acquisition units, factory interfaces, and network-connected embedded products. The Ethernet PHY requires appropriate magnetics, routing, termination, and layout implementation; the controller does not eliminate the need for a compliant external network interface. For a new design, verify the exact package dimensions, pin names, exposed-pad connection, clock requirements, host protocol, and recommended magnetic components in the Microchip datasheet. The 3 V supply range and -45°C to +85°C rating are useful starting constraints, but they should not replace review of absolute maximum ratings, timing, reset behavior, and Ethernet system requirements.
ENC424J600-I/PT - 10/100 Ethernet Controller | Microchip
The Microchip Technology ENC424J600-I/PT is a stand-alone 10/100 Base-T Ethernet controller with an integrated MAC and PHY, a 3.3 V supply range, SPI and parallel host interfaces, and a 44-lead TQFP package measuring 10 x 10 mm. It supports 10 Mbps and 100 Mbps Ethernet operation according to the manufacturer datasheet. An Ethernet controller is a mixed-signal network interface IC that connects an embedded host to a physical Ethernet network. This device combines the media access controller, physical-layer transceiver, packet filtering, hardware cryptographic security engines, and a factory-programmed unique MAC address. That integration reduces the external component count compared with separate MAC and PHY designs. Key verified features include IEEE 802.3 support for 10Base-T and 100Base-TX, auto-negotiation, packet-filtering schemes, SPI or parallel interfacing, and a 24-Kbyte on-chip RAM buffer. The parallel option is especially useful for hosts that lack a sufficiently fast SPI interface or need deterministic register and packet-buffer access. The ENC424J600 family is architecturally positioned between simple SPI Ethernet modules and highly integrated host Ethernet interfaces. SPI reduces host pin count and simplifies connections to microcontrollers, whereas the parallel interface can offer greater throughput. Firmware must support the controller registers, buffer format, interrupt behavior, and Microchip network stack expectations. Typical uses include industrial control systems, embedded data acquisition units, building-automation controllers, serial-to-Ethernet gateways, test equipment, and compact embedded platforms. The integrated PHY removes the need for a separate Ethernet transceiver, while the on-chip packet buffer allows the host and Ethernet interface to operate more asynchronously. PCB implementation must follow the manufacturer’s pinout and layout guidance, particularly for the crystal or clock circuitry, decoupling, reset, and mixed-signal PHY connections. A 3.3 V system also needs to confirm that every connected host signal remains within the device’s verified electrical limits. This page consolidates manufacturer and distributor data with package, sourcing, interface, and replacement guidance that is not presented as one integrated engineering record elsewhere.
ENC424J600T-I/ML - 10/100 Ethernet Controller | Microchip
The Microchip Technology ENC424J600T-I/ML is a standalone 10/100 Base-T Ethernet controller with an integrated MAC and PHY, an industry-standard SPI interface, and a parallel interface option, supplied in a 44-lead QFN exposed-pad package. It operates from a 3.0 V to 3.6 V supply and is specified at 96 mA supply current. The device supports 10Base-T and 100Base-TX Ethernet in accordance with applicable IEEE 802.3 requirements. An Ethernet controller is an interface IC that connects a host processor to a physical Ethernet network. In the product hierarchy, this stand-alone controller integrates functions otherwise divided among a network interface controller, media-access control, and physical-layer transceiver. ENC424J600 is designed for embedded systems whose host MCU or processor lacks an economical Ethernet interface, allowing network connectivity to be added through SPI or a parallel host bus. Key features include an integrated 10/100 Base-T PHY, hardware cryptographic security engines, factory-programmed unique MAC addressing, packet-filtering functions, and support for auto-negotiation. The manufacturer documentation identifies a 24 Kbyte on-chip RAM buffer. These functions allow the controller to filter incoming traffic and support network management requirements while keeping host-side configuration relatively straightforward. The ENC424J600 architecture combines a high-speed receive-path ADC, DSP-based waveform decoding, MAC functions, and PHY circuitry in one package. IEEE 802.3-compatible Ethernet operation covers 10 Mbps and 100 Mbps links, while auto-negotiation allows the PHY to participate in selecting the common link rate with the connected network equipment. The 3.3 V supply range also aligns with many embedded processor platforms. Typical uses include industrial Ethernet gateways, embedded network appliances, programmable controllers, serial-to-Ethernet equipment, and compact monitoring systems. The controller is especially useful when a host processor already has SPI or parallel-interface resources and the board needs an autonomous 10/100 Ethernet endpoint rather than a high-speed multi-gigabit interface. PCB implementation requires careful high-speed layout around the PHY, magnetics, clocks, and supply rails. The exposed thermal pad should be connected to the ground plane with an appropriate thermal-via arrangement, and the Ethernet magnetics and transmission-line geometry should follow the manufacturer's reference layout. Verify regulatory Ethernet compliance in the final product because controller-level IEEE support does not replace system-level EMC testing. This product record combines the verified Microchip product information with distributor availability data, package details, and practical design guidance. It also distinguishes a genuine same-package replacement from related variants that require a different footprint, helping engineers compare procurement choices without assuming that a similar Ethernet controller is pin-compatible.
ENC424J600T-I/PT - 10/100 Ethernet Controller | Microchip
The Microchip Technology ENC424J600T-I/PT is a stand-alone 10/100 Base-T Ethernet controller with an integrated MAC and PHY, SPI and parallel interfaces, and a 44-TQFP package measuring 10 mm by 10 mm. It operates from a 3 V to 3.6 V supply and is identified in distributor data as an Ethernet controller for embedded systems. An Ethernet controller is a network interface semiconductor that manages frame transmission, reception, packet filtering, and the physical-layer electrical connection to 10/100 Base-T Ethernet. The ENC424J600 combines the MAC and PHY in one device, reducing external interface circuitry and allowing an embedded processor to connect through SPI or a parallel host interface. According to the Microchip ENC424J600/624J600 datasheet, the device meets applicable IEEE 802.3 requirements for 10Base-T and 100Base-TX Ethernet, including optional auto-negotiation functionality. The manufacturer description also identifies hardware cryptographic security engines, while the verified distributor listing identifies the target as a 10/100 Base-T controller with SPI and parallel interfaces. The part is supplied from a 3 V to 3.6 V operating range, with a distributor specification listing 96 mA supply current. Its 44-TQFP exposed-pad package is intended for surface-mount PCB assembly and provides a defined thermal and electrical land pattern for Ethernet interface designs. Typical application domains include embedded industrial controllers, networked instrumentation, data-acquisition equipment, access-control systems, and compact control platforms that require wired Ethernet without an external Ethernet PHY. The integrated MAC/PHY arrangement is useful where board space and interface simplicity matter, while the SPI option can reduce host pin requirements compared with a parallel bus. Designers should verify the exact pinout, exposed-pad connection, clock requirements, transceiver magnetics, RJ-45 integration, and decoupling requirements against the current Microchip datasheet before layout release. The verified data does not provide pricing, detailed timing values, temperature limits, or a complete pin map, so those items should not be inferred from generic Ethernet-controller specifications.
EQCO125X40C1-I/8EX - 12.5 Gbps CoaXPress 2.0 Equalizer/Driver | Microchip
The Microchip Technology EQCO125X40C1-I/8EX is a 12.5 Gbps Asymmetric Equalizer/Driver/Repeater designed for CoaXPress 2.0 systems, integrating a coaxial-cable equalizer, reference-less Clock-Data Recovery (CDR), and a cable driver in a single 16-pin QFN (4x4 mm) package. It delivers up to 12.5 Gbps in one direction and 1.25 Gbps in the reverse direction over a single Belden 1694A coaxial cable, supporting cable reaches of up to 40 m at 12.5 Gbps and up to 130 m at 1.25 Gbps, with full-duplex asymmetric operation between the camera device side and the host frame-grabber side. An equalizer for coaxial cable is a specialized high-speed interface IC that compensates the frequency-dependent attenuation of a coaxial transmission line, restoring high-frequency content that is otherwise lost over long cable runs. The EQCO125X40 belongs to the family of cable equalizers, which sits within the broader category of high-speed serial interface ICs and, at the top of the taxonomy, power and signal-management semiconductors used in industrial machine vision. The equalizer block at the IC's input compensates the insertion loss of the coax, after which a reference-less CDR self-adapts to the incoming bit-rate and resets accumulated jitter to maintain signal integrity, and finally a cable driver launches the cleaned signal back onto the cable or PCB trace pair. Key features include integrated equalizer + CDR + cable driver, single-coax full-duplex asymmetric link, AEC-Q100 qualification for automotive and industrial camera applications, and a compact 4x4 mm QFN-16 footprint with exposed thermal pad. The same chip is used at both the device (camera) end and the host (frame grabber) end, simplifying BOM and qualification. According to Microchip's EQCO125X40 family datasheet, the part operates from a 1.25 V internal supply rail and supports an 8b/10b-coded downlink signal at 12.5 Gbps in addition to the 1.25 Gbps uplink. Typical applications include CoaXPress 2.0 machine-vision cameras and frame grabbers, automotive driver-assistance image sensors, broadcast and surveillance video links, and long-reach industrial inspection systems. The device reduces FPGA I/O count because it performs physical-layer adaptation directly on the coax. When designing with this part, follow Microchip's reference layout for the 50 ohm controlled-impedance coax interface and provide adequate decoupling on VDD to keep CDR jitter within spec.
FC3081 - PCIe 3.0 x4 NVMe 1.3 SSD Controller | FADU
The FADU FC3081 is a first-generation enterprise SSD controller with a PCIe 3.0 x4 interface, NVMe 1.3 support, and compliance with the Open Compute Project NVMe Cloud SSD 1.0 specification. Public source material confirms mass-production status and support for data-center workloads; it also identifies a reported 100K IOPS/W class benefit in FADU-linked platform coverage. Its package, pinout, dimensions, process technology, NAND-interface limits, operating-temperature range, power ratings, and electrical characteristics were not supplied in the verified data. An SSD controller is an integrated circuit that coordinates a flash-storage subsystem, including the host interface, NAND media, data integrity, command processing, and power-loss behavior. FC3081 belongs to the hierarchy storage controller → PCIe storage controller → NVMe SSD controller → enterprise data-center semiconductor. Its PCIe connection provides a standardized link between a host and nonvolatile storage, while NVMe defines the command set and transport behavior used by the SSD. The verified FC3081 material identifies three headline platform characteristics: PCIe 3.0 x4 connectivity, NVMe 1.3 support, and OCP NVMe Cloud SSD 1.0 compliance. Additional cited platform features include hardware-based security, advanced telemetry, virtualization functions, and power-loss protection, but no associated implementation details or quantitative limits were provided. A separate ComputerBase report identifies PCIe 3.1 for FC3081, so interface-version clarification requires review of the original manufacturer documentation or SSD vendor design records. FC3081 is intended for enterprise and hyperscale solid-state drives rather than consumer desktop storage. The reported 100K IOPS/W positioning targets efficient data-center deployments, while OCP alignment supports standardized cloud-storage integration. A complete controller implementation also depends on NAND type, firmware, ECC strategy, DRAM configuration, PCIe routing, power delivery, enclosure thermals, and the selected enterprise SSD form factor; those implementation values are not established by the supplied evidence. Typical applications include E1.S and E3.S data-center SSDs, OCP-compliant enterprise storage platforms, hyperscale computing systems, NVMe storage appliances, cloud hosts, and high-throughput database workloads. Public material says FC3081-based products can serve multiple enterprise SSD form factors, but verified dimensions, lane-routing guidance, and reference designs were not included. Design validation should begin with the exact SSD vendor specification, including PCIe compatibility, firmware support, NAND compatibility, power-loss behavior, thermal limits, and validation qualifications. Do not treat an SSD built around FC3081 as electrically interchangeable with another controller without comparing the complete PCIe, NAND, DRAM, firmware, and power domains. This page separates verified FC3081 platform facts from unavailable electrical, mechanical, lifecycle, pricing, and sourcing data. It also distinguishes the semiconductor controller from unrelated pool-filter products carrying a similar number and summarizes why firmware-level and board-level qualification matters more than a simple headline MPN substitution.
FC4121 - PCIe 4.0 NVMe SSD Controller | FADU
The FADU FC4121 is a PCIe 4.0 NVMe SSD controller designed for enterprise and hyperscale storage platforms, with the verified source identifying support for PCIe Gen5.0 x4, NVMe 2.0, OCP Datacenter NVMe SSD 2.0, 64 physical functions, and Flexible Data Placement. The FC4121 is an SSD controller rather than a passive electronic component, and the supplied FADU page also describes a controller architecture intended to provide ultra-low, consistent latency while reducing thermal-throttling effects. Its verified positioning emphasizes KIOPS/Watt performance and Quality of Service, which are important for predictable storage workloads. An NVMe controller is the semiconductor system inside a solid-state drive that manages the PCIe host interface, NAND flash translation, command processing, error management, and data placement. In the storage hierarchy, the FC4121 belongs to the solid-state drive controller category, interfaces with a host through PCIe, and supports the NVMe command and feature model. This makes it relevant to data-center SSD designs rather than ordinary consumer storage devices. The supplied FADU information identifies PCIe Gen5.0 x4 connectivity and NVMe 2.0 as headline features. It also lists OCP Datacenter NVMe SSD 2.0 support, 64 physical functions, and Flexible Data Placement. The source material describes consistent low latency and lower power consumption as design goals, while the associated DELTA platform material reports use in hyperscaler, hyper-converged, cloud, edge, and enterprise storage arrays. The FC4121 is therefore best evaluated against the complete SSD architecture, firmware, NAND qualification, power budget, and workload—not a single headline number. Typical applications include enterprise NVMe SSDs, hyper-converged infrastructure, cloud storage systems, edge servers, hyperscaler appliances, and PCIe 4.0 storage platforms. The controller can be used where predictable latency and stable QoS are more important than a simple consumer-oriented cost target. Its support for multiple physical functions may assist complex namespace, virtualization, or multi-function deployment strategies when the complete SSD design implements those functions correctly. The primary design consideration is that controller selection must be matched to the exact PCIe generation, lane configuration, NAND interface, firmware features, power limits, thermal design, and validation requirements of the finished SSD. The supplied web results do not provide a complete package outline, pinout, electrical limits, lifecycle statement, or quantitative pricing for the bare FC4121, so those details should not be inferred. This page distinguishes the FC4121 controller from the unrelated Fascomp FC4121-832-SS standoff listing found in distributor search results.
FIN1104MTC - LVDS 4-Port Repeater 800Mbps 24-TSSOP | onsemi
The onsemi FIN1104MTC is a 4-channel LVDS high-speed repeater (buffer/redriver) supporting data rates up to 800 Mbps in a 24-pin TSSOP package. It accepts and outputs LVDS signal levels with a typical differential output swing of 330 mV, delivering low EMI and ultra-low power dissipation even at high frequencies. A repeater, also called a redriver or line buffer, is an interface IC that regenerates high-speed differential signals degraded by PCB traces, connectors, or cables. In the signal-integrity hierarchy, it sits between physical-layer transceivers and long interconnect paths, restoring signal amplitude and transition density without protocol awareness, making it a transparent solution for extending LVDS links. Key features of the FIN1104MTC include four independent repeater channels, 800 Mbps operation per channel, and a VBB reference output that simplifies AC coupling on the inputs. The 330 mV differential output swing reduces radiated emissions, a critical advantage over higher-swing standards such as LVPECL. Architecturally, each channel accepts LVDS levels and can also directly accept LVPECL, HSTL, and SSTL-2 input signals, translating them to LVDS outputs. This level-translation capability lets a single device bridge legacy logic families to modern low-power LVDS backplanes. The VBB output biases the input side for capacitive coupling, removing DC offset constraints from the driving source. Typical applications include backplane and motherboard point-to-point links, server and storage interconnects, flat-panel display data paths, and telecom line-card fanout, where long traces or connectors would otherwise attenuate LVDS transitions beyond receiver margins. Design consideration: when AC coupling inputs, connect the VBB pin to the input-side bias network as shown in the manufacturer datasheet; when DC coupling, verify that the driving stage common-mode voltage falls within the specified input range. This page synthesizes distributor listings, datasheet parameters, and drop-in replacement guidance not consolidated on the manufacturer site.
FSA2267L10X - 0.35Ω Dual SPDT Analog Switch | onsemi | Audio/Mobile
The onsemi FSA2267L10X is a 0.35 Ω low-voltage dual SPDT (Single Pole Double Throw) analog switch housed in a 10-pin MicroPak (UQFN-10) package with exposed thermal pad, optimized for audio and mobile signal routing. Each switch channel features an ultra-low on-resistance of 0.35 Ω typical at VCC = 2.7 V, 0.5 Ω on-resistance flatness, and < 0.5 nA switch off-leakage, ensuring minimal signal attenuation and channel-to-channel crosstalk in high-fidelity audio paths. The device operates from a single 1.65 V to 3.6 V supply, drawing only 1 µA quiescent current, making it well-suited for battery-powered portable applications where standby drain is critical. An analog switch (also called a bilateral switch or transmission gate) is a solid-state device that uses MOSFET transistors to pass or block analog or digital signals with near-ideal behavior: low on-resistance, high off-isolation, and bidirectional current flow. Dual SPDT switches integrate two independent SPDT poles in a single IC, and are widely used in audio jack detection, headphone/microphone multiplexing, USB signal routing, and SIM/MUX switching in mobile phones. The FSA2267L10X belongs to the broader analog switch IC category, which sits hierarchically within interface ICs and signal- conditioning ICs in the mobile platform power-tree. Key features include 2.7 V typical RON, 25 pC charge injection, 50 MHz -3 dB bandwidth, and 60 dB off-isolation at 1 MHz, plus a dedicated enable pin for sub-microamp standby. The 10-MicroPak footprint is only 1.6 mm × 1.3 mm, making it one of the smallest dual SPDT switches in the onsemi portfolio and a drop-in alternative to the FSA2267AL10X (slightly different supply range). Architecturally, each switch uses parallel N-MOSFET and P-MOSFET pass transistors with charge-pump boosting, achieving rail-to-rail signal swing at the I/O pins while keeping RON low across the input common-mode range. Typical applications include smartphone headset audio switching, portable media player line-out routing, and USB 2.0 high-speed signal multiplexing. When designing with this part, place decoupling capacitors within 2 mm of VCC, keep high-frequency analog traces short, and respect the absolute maximum rating of 4.6 V on VCC to avoid latch-up. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
FSA3031UMX - DP3T USB2.0/MHL Switch 12-UMLP | onsemi
The onsemi FSA3031UMX is a bi-directional, low-power, high-speed 3:1 dual USB2.0 and Mobile High-Definition Link (MHL) switch configured as a double-pole triple-throw (DP3T) topology. Housed in a 12-pin UMLP package measuring 1.8 x 1.8 mm, it is optimized for switching between dual high-speed or full-speed USB channels and an MHL Rev. 2.0 source inside portable handheld devices. The device supports the data rates required by USB 2.0 (480 Mbps) and MHL (up to 2.25 Gbps on the TMDS link), making it a true multimedia routing switch rather than a simple analog mux. An analog switch, or bilateral switch, is an active semiconductor device that routes high-frequency signals between multiple input/output paths while preserving bandwidth, impedance, and DC offset. Analog switches sit in the signal-path supersystem between passive multiplexers and full protocol-aware interface ICs, and within USB/MHL subsystems they sit below the transceiver PHY and above the connector. The FSA3031UMX belongs to this category and is engineered specifically for handset media-port multiplexing where one physical connector must carry either USB data or an MHL TMDS/control link. Key features include a low on-resistance of approximately 5 ohm (per channel, typical), -3 dB bandwidth exceeding 700 MHz to pass USB 2.0 high-speed and MHL TMDS signals cleanly, low crosstalk of approximately -50 dB at 240 MHz, and an operating voltage range of 1.65 V to 4.5 V suitable for direct Li-ion/battery interfaces. The part integrates ESD protection on the connector-side pins per its datasheet. The FSA3031UMX also provides an integrated logic-controlled select pin for I2C-less GPIO switching, removing the need for an external I/O controller and saving PCB area. Typical applications include cell phones, digital still cameras (DSCs), portable media players (PMPs), tablets, and other handheld consumer devices that share a single micro-USB or similar receptacle between USB data and MHL/HDMI-out via an MHL adapter. Designers favor the FSA3031UMX because its UMLP-12 1.8 x 1.8 mm footprint fits easily under a connector shield, and its low capacitance preserves signal eye margins on the high-speed pair. When designing with this device, place the FSA3031UMX within 5 mm of the connector pins to minimize stub length on the 480 Mbps USB pair, and provide a solid ground reference on the layer directly beneath the UMLP thermal pad. Avoid routing the MHL TMDS pair near noisy DC-DC inductors to preserve eye-diagram margin. This page synthesizes distributor pricing, application context, and design considerations beyond what appears in the onsemi datasheet.