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LAN9117-MT 10/100 Ethernet Controller | Microchip
The Microchip Technology LAN9117-MT is a single-chip 10/100 Ethernet controller with an integrated Base-T/TX PHY, parallel host interface, and 100-pin TQFP package. The verified distributor listing identifies support for 10/100 Base-T/TX networking and a parallel interface. It is designed for embedded systems requiring wired Ethernet without a separate external Ethernet transceiver. An Ethernet controller is an interface IC that connects an embedded processor or programmable controller to a physical Ethernet network. Within the broader semiconductor hierarchy, the LAN9117-MT belongs to the Ethernet controller family, network interface controllers, interface ICs, and communications semiconductors. By combining controller and physical-layer functions, it can reduce component count while preserving a parallel processor-facing integration path. The verified product information identifies 10 Mbps and 100 Mbps operation, a 3.3 V supply requirement, a 100-pin TQFP package, and a single-chip architecture. The -MT ordering suffix is associated with a tray package in the available distributor record. Other detailed electrical limits, host-interface timing, register features, media-type behavior, and environmental ratings were not included in the supplied verified excerpts and therefore are not asserted here. Typical uses include embedded industrial controllers, data-acquisition systems, building-automation equipment, access-control terminals, test instruments, and compact embedded servers. A parallel host interface can suit processors and controllers that do not include an integrated Ethernet MAC, while the integrated PHY simplifies the connection between the digital host bus and the analog magnetics interface. The primary design consideration is footprint verification: the DigiKey listing describes a 100-TQFP package measuring 14 mm by 14 mm, while another distributor excerpt states 14 mm by 20 mm. Engineers must confirm the exact ordering-code drawing and land pattern against the authoritative manufacturer package documentation before layout release. The -MT suffix and tray packaging must also be confirmed with the current manufacturer datasheet. This page combines verified manufacturer and distributor descriptions with explicit engineering caveats. It does not infer unavailable electrical, timing, thermal, or compliance values, and it separates confirmed product identity from details that still require datasheet-level verification.
LAN9118-MT 10/100 Ethernet Controller | Microchip
The Microchip Technology LAN9118-MT is a single-chip 10/100 Base-T/TX Ethernet controller with a 32-bit external parallel interface, a 3.3 V supply, and a 100-pin TQFP package. It combines an Ethernet controller and PHY for embedded systems requiring local network connectivity without a separate PCI bus controller. The device supports 10 Mbps and 100 Mbps Ethernet operation and is identified by the commercial temperature-grade -MT ordering suffix. An Ethernet controller is an interface integrated circuit that connects an embedded processor or microcontroller to a physical Ethernet network. The LAN9118 family belongs to the broader hierarchy of Ethernet controller -> network interface controller -> interface IC -> semiconductor. Integrating the controller and PHY supports embedded product designs for industrial controls, communications equipment, data acquisition, and networked peripherals, while the parallel host interface gives the host processor direct register and data access. The verified product information identifies a 32-bit external data bus, a 7-bit address bus, a 25 MHz clock capability, a 3.3 V supply, and a 100-pin TQFP package. The 100-pin package exposes the substantial parallel host interface required by the non-PCI architecture. The LAN9118-MT is therefore most appropriate where an embedded system has enough I/O and board area for a high-pin-count parallel interface rather than a compact serial Ethernet controller. The part is described as a high-performance single-chip 10/100 non-PCI Ethernet controller. Its combined controller and PHY architecture can reduce the number of external network-interface components compared with a separated MAC and physical-layer design. Ethernet magnetics and the RJ45 connector remain external, and the final signal-integrity and layout implementation must follow the manufacturer hardware guidance. The provided verification also identifies IEEE 802.3 and IEEE 802.3u compliance in a product comparison source. Typical uses include embedded Ethernet gateways, industrial monitoring equipment, serial-to-Ethernet systems, test instruments, and control systems that require 10/100 connectivity. The parallel interface makes the LAN9118-MT most attractive to designs with a processor bus capable of supporting the required data width and pin count. It is less suitable for highly constrained systems that favor a serial Ethernet interface or a smaller package. Designers should verify the complete pinout, voltage tolerances, clock requirements, decoupling, reset behavior, magnetics selection, and PCB routing against the manufacturer datasheet before layout release. The verified search results identify the manufacturer LAN9118 product page and multiple datasheet mirrors, but do not provide every electrical timing, pin-level, or lifecycle value needed for a complete production design.
LAN9215-MT - 100Mbps Ethernet Controller | Microchip
The Microchip LAN9215-MT is a single-chip 10/100 Ethernet controller with a 100 Mbps data rate, a 16-bit parallel MII interface, and a 100-pin TQFP package measuring 14 x 14 mm. It integrates an Ethernet media-access controller, PHY, and connectivity needed for embedded network equipment. The verified distributor listing identifies it as a 10/100 Base-T/TX PHY controller using a parallel interface, while the manufacturer describes it as a flexible embedded Ethernet solution. An Ethernet controller such as the LAN9215-MT connects an embedded host interface to a physical copper network. Within the hierarchy of integrated circuits, it is an Ethernet interface controller and a networking semiconductor. Its 100 Mbps throughput targets Fast Ethernet networks, while its 16-bit MII provides a parallel connection to a host processor. Integrating the controller and PHY reduces external network-interface component count compared with a discrete MAC-and-PHY design. Verified features include support for 10 Mbps and 100 Mbps operation, HP Auto-MDIX support, driver compatibility with the preceding LAN9118 family, and footprint, register, and driver compatibility with those devices. The manufacturer datasheet states a 2.97 V to 3.63 V supply range and a maximum clock frequency of 25 MHz. A separate component listing describes a 3.3 V device and an operating range from 0°C to +70°C, consistent with the -MT commercial-temperature ordering option. The LAN9215-MT is suitable for embedded Ethernet systems that require a CPU-facing parallel interface rather than a serial SPI host interface. Typical uses include industrial controllers, embedded gateways, test equipment, communications modules, and OEM data-acquisition products. Its 16-bit host interface is particularly appropriate for microprocessors and programmable logic devices able to sustain parallel bus transactions at Ethernet timing requirements. The primary integration consideration is the Ethernet magnetics and analog network path. The manufacturer datasheet notes that supporting HP Auto-MDIX can require different magnetics and passive components plus a minor PCB change. Designers should therefore follow the manufacturer reference schematic and preserve the required layout, power, decoupling, and magnetics implementation rather than treating the controller as a standalone digital component. This page consolidates verified manufacturer and distributor information, practical integration guidance, application fit, and transparent gaps where complete electrical or pin-level data was not provided. The official LAN9215 product page and datasheet remain the controlling references for registers, timing, electrical limits, and reference design implementation as verified on 2026-10-22.
LAN9217-MT 10/100 Ethernet Controller | Microchip Technology
The Microchip Technology LAN9217-MT is a single-chip 10/100 Ethernet controller with a 16-bit parallel MII interface, HP Auto-MDIX support, and a 100-TQFP 14 x 14 mm package. It combines an Ethernet media-access controller and physical-layer transceiver to connect embedded processors to 10BASE-T and 100BASE-TX networks. An Ethernet controller is an interface IC that manages frame processing, host access, and physical network signaling. In the product hierarchy, the LAN9217 belongs to Ethernet controllers, interface ICs, networking semiconductors, and embedded connectivity solutions. Its integrated PHY reduces external circuitry while its 16-bit MII interface supports common embedded processor buses and reduces the host-side I/O burden compared with narrower parallel interfaces. Key verified features include a nominal 1.8 V supply, commercial-grade operation up to 70 degrees Celsius, 10/100 Base-T and Base-TX support, and HP Auto-MDIX. The controller is designed for embedded systems requiring low CPU overhead, flexible integration, and controlled system cost. The 100-pin TQFP package provides the complete mixed-signal Ethernet interface while permitting standard surface-mount assembly. According to the Microchip manufacturer datasheet, the LAN9217 architecture integrates the PHY and controller functions and can interface with most 16-bit embedded CPUs. This combination makes it suitable for industrial controllers, embedded servers, network bridges, test equipment, and communications equipment that already have a parallel bus rather than an SPI Ethernet interface. Typical deployments include factory automation controllers, embedded network appliances, industrial instrumentation, serial-to-network gateways, and compact control systems. The Auto-MDIX function supports automatic pair detection, reducing installation friction where straight-through or crossover cabling may occur. Integrated 10/100 support lets the system negotiate its Ethernet rate through Auto-Negotiation rather than requiring two external physical interfaces. When integrating the LAN9217-MT, pay close attention to the complete 100-pin assignment, 16-bit MII timing, required clocks, magnetics, external component recommendations, and exposed-pad layout in the manufacturer datasheet. The verified excerpts do not provide enough information to reproduce the full reference circuit or pin names, so these implementation details should not be inferred from the interface description alone.
LAN9218-MT - 100Mbps 10/100 Ethernet Controller | Microchip
The Microchip Technology LAN9218-MT is a single-chip 10/100 Base-T/TX Ethernet controller with a 32-bit parallel host interface, 100 Mbps data rate, and a 100-TQFP 14 x 14 mm package. It integrates the Ethernet media access controller and physical-layer transceiver into one device for compact embedded networking designs. The verified source identifies the part as a high-performance 10/100 Ethernet controller designed around performance, flexibility, ease of integration, and system cost control. An Ethernet controller is an interface IC that connects an embedded processor or programmable logic device to a copper Ethernet network. Its MAC layer manages frame transmission and reception, while its integrated PHY handles the physical signaling required between digital circuitry and an Ethernet transformer or magnetics. This integration reduces the number of external network-interface components compared with separate MAC and PHY solutions, although external passive and magnetic components are still required by the application design. The LAN9218-MT supports 10/100 Ethernet operation and uses a parallel interface instead of a serial media-independent interface. The verified distributor result identifies the interface as 32-bit and the data rate as 100 Mbps. The device is intended for embedded systems requiring an Ethernet endpoint, including industrial controls, communications equipment, embedded servers, and connected test equipment. Its 100-TQFP package provides a high pin count for the parallel host bus, control signals, clocks, power supplies, and Ethernet physical connections. The manufacturer describes the LAN9218 family as architected for high performance and integration. The verified product page and datasheet links should be used for the complete register map, electrical limits, timing specifications, magnetic-component recommendations, Auto-MDIX behavior, reference schematic, and package drawing. Because the provided data does not include the complete manufacturer parameter table, unverified values are intentionally identified as [DATA_NEEDED] in the specifications rather than inferred. A typical implementation places the Ethernet controller between a host processor and network magnetics. The host communicates through the parallel bus, while the integrated PHY connects through transformer-center-tapped or other approved magnetic arrangements. PCB layout is important because high-speed digital signals, analog PHY signaling, power distribution, and magnetics must be separated appropriately. Microchip’s reference schematic and placement checklist are the authoritative starting points for a production layout. Designers should use the manufacturer datasheet and reference schematic to confirm pin functions, strap settings, clock requirements, termination, decoupling, and Auto-MDIX configuration. The verified cross-reference material notes that Auto-MDIX support may require changes to magnetics and surrounding passive components, and that a PCB change may be needed. Therefore, a software-compatible Ethernet controller is not automatically a hardware drop-in replacement. This page consolidates verified distributor pricing information, manufacturer documentation links, application context, and design guidance. It is intended to help engineers identify the correct LAN9218-MT, assess whether an alternative is truly pin-compatible, and move from component selection to a validated Ethernet hardware design.
LAN9250/ML - 10/100 Ethernet Controller | Microchip
The Microchip Technology LAN9250/ML is a single-chip 10/100 Ethernet controller with integrated Ethernet PHY, supporting 10 Mbps and 100 Mbps operation in a 64-pin QFN package. It is designed for embedded systems requiring flexible host connectivity, packet buffering, and controlled network integration. The verified product data identifies support for 1.8 V, 2.5 V, and 3.3 V operation, along with 8-bit or 16-bit host interfaces and SPI/SQI connectivity. An Ethernet controller is an interface IC that connects an embedded processor or microcontroller to a physical Ethernet network. It combines media-access control, packet data handling, transmit and receive buffering, and a physical-layer transceiver in one device. The LAN9250 series is intended to reduce integration effort by placing the controller and PHY together while preserving support for embedded host buses and serial interfaces. The LAN9250/ML combines 10/100 Ethernet connectivity with integrated PHY functionality. Its packet FIFOs are intended to accommodate high-latency applications, while its memory-buffer architecture optimizes packet granularity and helps reduce packet loss. The product description specifically identifies performance, flexibility, ease of integration, and system cost control as design priorities for embedded applications. Typical use cases include industrial embedded controllers, networked data-acquisition equipment, building-control systems, communications modules, and other MCU-based products that require an Ethernet port. The verified data lists an 8/16-bit interface and SPI/SQI interface options in distributor descriptions, allowing the device to fit systems using parallel or serial host connectivity. The 1.8 V, 2.5 V, and 3.3 V supply options are useful for systems with multiple embedded power domains. A key design consideration is that the Ethernet PHY and host interface still require careful PCB implementation, including adequate power distribution, controlled-impedance routing, and separation between sensitive analog and digital sections where required by the datasheet layout guidance. The verified sources identify the LAN9250 as IEEE 802.3/802.3u compliant, but detailed timing, pin-level, and electrical requirements should be confirmed against the manufacturer datasheet. This page consolidates verified manufacturer and distributor information, interface characteristics, application context, and sourcing links for LAN9250/ML engineers evaluating embedded Ethernet connectivity.
LAN9250/PT - 10/100 Ethernet Controller w/ PHY | Microchip | TQFP-64
The Microchip Technology LAN9250/PT is a full-featured, single-chip 10/100 Base-T/TX Ethernet controller with an integrated PHY, packaged in a 64-pin TQFP-EP (10x10 mm) with exposed thermal pad. It supports both I2C and SPI host interfaces and is designed for embedded applications requiring high throughput, low CPU overhead, and minimal external component count. An Ethernet controller is a semiconductor device that handles the data-link (MAC) and physical-layer (PHY) functions required to send and receive Ethernet frames. The LAN9250 integrates both the IEEE 802.3 10/100 MAC and the 100BASE-TX PHY in one chip, exposing a simple SPI/I2C slave interface to the host microcontroller. This eliminates the need for an external MAC, external PHY, and an Ethernet-equipped MCU, which reduces BOM cost and PCB area in industrial, building-automation, and IoT designs. The device sits in the network-interface hierarchy as: PHY -> MAC -> Ethernet controller -> communication IC -> semiconductor. Key features include large transmit and receive FIFOs to accommodate high-latency applications, an efficient memory buffer architecture that optimizes packet granularity, hardware offload features that reduce packet loss, support for HP Auto-MDIX, and built-in support for EtherCAT, Modbus TCP, and other industrial Ethernet protocols. The flexible host bus allows integration with virtually any 8/16/32-bit microcontroller without requiring an external bus interface, and on-chip termination and bias resistors reduce external component count. Typical applications include industrial control PLCs, factory automation nodes, building-automation gateways, IoT edge devices, motion controllers, EtherCAT slave controllers (when paired with a host MCU running the EtherCAT slave stack), and embedded HMI panels. The integrated PHY and small TQFP-64 footprint make it especially attractive for space-constrained designs that still need a wired industrial Ethernet port. When designing with this device, ensure the 25 MHz reference clock is stable and low-jitter, route the differential TX/RX pairs as a 100-ohm differential pair on the PCB, and place the 1.8V and 3.3V decoupling capacitors as close to the power pins as possible. The exposed thermal pad must be soldered to a ground copper pour for thermal dissipation.
LAN9252/ML - 2/3-Port EtherCAT Slave Controller, Dual PHY | Microchip
The Microchip LAN9252/ML is a 2/3-port EtherCAT slave controller (ESC) with dual integrated 100BASE-TX Ethernet PHYs, supplied in a 64-pin QFN (9x9 mm) package. It supports 100 Mbps full-duplex Ethernet, HP Auto-MDIX, optional 100BASE-FX fiber via an external transceiver, SPI/SQI host interfaces, 3 FMMUs, 4 SyncManagers, and a Distributed Clock mechanism. The part is targeted at cost-effective EtherCAT slave designs and operates from a 1.8 V/2.5 V/3.3 V digital core supply plus a 3.3 V analog supply. An EtherCAT slave controller (ESC) is an application-specific integrated circuit that implements the EtherCAT slave protocol entirely in hardware, exposing process data and mailbox registers to a host microcontroller over a parallel or serial Process Data Interface (PDI). Within the industrial communication stack, ESCs sit below real-time Ethernet masters and above generic MCUs; the family hierarchy is ESC -> industrial Ethernet controller -> communication IC -> semiconductor. Compared with earlier solutions such as the Beckhoff ET1100, the LAN9252 integrates the physical layer and uses a smaller QFN package, simplifying board layout and reducing BOM cost. Key features include two embedded full-duplex 100BASE-TX transceivers with HP Auto-MDIX, an SPI/SQI host interface with Digital I/O modes of up to 16 bits, support for external 100BASE-FX fiber via a fiber transceiver, on-chip 3 FMMUs and 4 SyncManagers, distributed clocking, cable diagnostics, and integrated termination resistors. The device supports 8/16-bit and 32-bit host microcontrollers and provides extensive interrupt, GPIO, and LED status resources. Architecturally, the LAN9252 combines an EtherCAT IP core (Beckhoff-licensed) with two 100 Mbps Ethernet PHYs, hardware DPRAM, FMMU/SyncManager logic, and an SPI/SQI bus bridge on a single die. Power architecture is split between a 1.8 V/2.5 V/3.3 V digital core and a 3.3 V analog PHY rail, which allows the digital host MCU to operate from lower voltages while the analog side retains high signal integrity for 100BASE-TX signaling. The QFN-64 package provides a single exposed pad (EP) that must be soldered to a low-impedance ground plane for thermal and EMI reasons. Typical applications include EtherCAT digital I/O modules, servo/stepper drives, encoder feedback, robotics and CNC peripherals, sensor/actuator hubs, and industrial motor controllers that need deterministic real-time Ethernet communications. Designers usually pair the LAN9252 with a small Cortex-M-class MCU that runs the application firmware and reads/writes the process image through the LAN9252's SPI/SQI registers. When designing with the LAN9252, follow Microchip's LAN9252 Schematic Checklist closely: place the 49.9 ohm 1% pull-up on TXPA/TXPB to VDD33TXRX1, use a 25 MHz reference clock, place the magnetics close to the PHY pins, and provide an EEPROM for configuration. The 64-pin QFN exposed pad must be soldered to a continuous ground copper pour to meet thermal and EMI performance, and the SPI/SQI mode strap must be selected correctly at reset. This page synthesizes real distributor pricing, drop-in pin-compatible alternatives from the same Microchip LAN92xx family, and practical design notes distilled from the LAN9252 Schematic Checklist - content not bundled together in the manufacturer datasheet alone.
LAN9252/PT - 2/3-Port EtherCAT Controller | Microchip
The Microchip Technology LAN9252/PT is a 2/3-port EtherCAT slave controller with two integrated 10/100 Ethernet PHYs, 100 Mbps 100BASE-TX support, SPI interface capability, and a 64-pin TQFP exposed-pad package. The LAN9252/PT combines EtherCAT device-controller functions and copper Ethernet physical layers in one device, reducing the component count required for industrial network equipment. An EtherCAT slave controller, or ESC, is a specialized communications semiconductor that manages EtherCAT frames and transfers process data between an EtherCAT network and an embedded controller. In the broader hierarchy, the LAN9252/PT belongs to network and industrial interface integrated circuits: it combines a digital EtherCAT controller, full-duplex Ethernet PHYs, a host-side SPI interface, and local data-management functions. The integrated PHYs also provide HP Auto-MDIX, allowing direct-connect or crossover cables, while 100BASE-FX operation is supported through an external fiber transceiver. Verified device features include two or three EtherCAT ports, dual integrated Ethernet PHYs, full-duplex 100BASE-TX operation at 100 Mbps, HP Auto-MDIX, and support for an SPI host interface. The exact electrical ratings, memory configuration, temperature limits, timing values, and pin-level functions must be confirmed in the Microchip manufacturer datasheet before layout or firmware development. The LAN9252/PT is suited to EtherCAT servo drives, I/O modules, industrial automation controllers, motion-control equipment, and distributed factory-control systems. Its two integrated PHYs let a three-port EtherCAT device pass network traffic through its integrated ports; two-port operation is also possible. Copper Ethernet uses the integrated transceivers, whereas fiber links require an external 100BASE-FX transceiver. PCB implementation requires careful separation between digital interfaces and analog Ethernet circuitry, compliant Ethernet magnetics, controlled impedance routing, solid return paths, and thermal management of the exposed pad. Firmware must also implement the required EtherCAT state machine, device profile, process-data mapping, and host-interface behavior rather than treating the controller as a generic Ethernet switch. This product page consolidates the verified manufacturer description, distributor packaging information, pricing context, available migration guidance, and practical integration constraints. It also distinguishes true drop-in interchangeability from broader Ethernet alternatives that do not preserve the LAN9252 EtherCAT architecture.
LAN9252I/PT - 2/3-Port EtherCAT Controller | Microchip
The Microchip LAN9252I/PT is a 2/3-port EtherCAT slave controller with dual integrated 10/100 Ethernet PHYs, 100BASE-TX operation, and a 64-pin TQFP exposed-pad package. It supports a synchronous device SPI/SQI host interface, HP Auto-MDIX, digital I/O mode, and an external fiber transceiver for 100BASE-FX. The controller includes 4K bytes of dual-port memory and three Fieldbus Memory Management Units for EtherCAT communication. An EtherCAT slave controller, or ESC, is a semiconductor that connects an embedded controller or industrial I/O module to an EtherCAT segment. The ESC processes EtherCAT frames, manages distributed clocks, provides dual-port memory for the host application, and controls network ports through integrated Ethernet PHYs. The LAN9252I/PT therefore combines an EtherCAT communication engine, two 100Mbps Ethernet physical layers, and host-side control in one device. The LAN9252 family supports full-duplex 100BASE-TX on both integrated Ethernet ports and HP Auto-MDIX, allowing direct-connect or crossover Ethernet cables. The SPI/SQI interface connects the ESC to an MCU or embedded processor, while digital I/O mode lets EtherCAT-master-controlled signals be monitored or driven through the device. The external-transceiver path also supports 100BASE-FX when fiber connectivity is required. The 64-TQFP-EP package provides a 10 mm by 10 mm land pattern with an exposed thermal pad. The /PT ordering suffix identifies the tray package option, while the I variant identifies the industrial temperature grade. Designers should confirm the exact electrical limits, pin names, timing values, recommended magnetics, and decoupling values against the manufacturer datasheet before releasing a PCB layout. Typical applications include distributed I/O modules, servo and motion-control nodes, PLC interfaces, industrial Ethernet gateways, robot control systems, and EtherCAT fieldbus equipment. The integrated PHYs reduce external Ethernet PHY count, while the ESC resources allow a host processor to exchange process data and mailbox information with the EtherCAT master. PCB implementation must preserve the package footprint and exposed-pad land pattern, provide adequate power and ground planes, route differential Ethernet pairs according to the datasheet guidance, and place magnetic-interface and decoupling components close to their associated pins. Verify isolation, magnetics, termination, and cable requirements for the target industrial installation. This page consolidates the verified manufacturer and distributor information, package and interface details, sourcing context, and design guidance for engineers evaluating the LAN9252I/PT. It is intended to accelerate BOM review and board-level planning while leaving unverified electrical parameters explicitly marked for confirmation against the manufacturer datasheet.
LAN9252TI/PT - 2/3-Port EtherCAT Slave Controller | Microchip
The Microchip Technology LAN9252TI/PT is a 2/3-port EtherCAT device controller (ESC) with dual integrated Ethernet PHYs, each containing a full-duplex 100BASE-TX transceiver supporting 100 Mbps operation. Housed in a 64-pin TQFP-EP (10x10 mm) package with an exposed thermal pad, it operates from 1.8 V/2.5 V/3.3 V supplies and presents a digital SPI host interface. The LAN9252TI/PT supports HP Auto-MDIX and exposes two or three Ethernet ports, enabling designers to build daisy-chain EtherCAT nodes without an external PHY. What is an EtherCAT slave controller? An EtherCAT Slave Controller is the silicon heart of a slave node on an EtherCAT fieldbus, which is a deterministic real-time Ethernet protocol widely used in industrial automation (Beckhoff's EtherCAT). The ESC handles the on-the-fly processing of Ethernet frames, manages distributed clock synchronization, and exposes process data via a host interface such as SPI or parallel bus to an application microcontroller. The LAN9252TI/PT is therefore a bridge IC: it is a slave on the EtherCAT network and a peripheral to a host MCU. It belongs to the wider category of industrial Ethernet controllers, complementing protocols such as PROFINET, EtherNet/IP and Modbus TCP. Key features include dual 100BASE-TX PHYs with HP Auto-MDIX, an SPI host interface for the application MCU, 2/3 port switch capability, integrated 1.8 V/2.5 V/3.3 V I/O tolerance, hardware cable diagnostics and an industrial temperature range. The integrated PHYs eliminate two external transceiver ICs and the associated magnetics design, while Auto-MDIX allows direct or crossover cables interchangeably. Three ports enable line, ring or star network topologies natively on the chip. Architecturally, the LAN9252TI/PT pairs an EtherCAT IP core (Beckhoff-licensed ET1100-equivalent logic) with two 100 Mbps Ethernet PHY macros and a digital SPI/parallel bridge. The device supports distributed clocks (DC) with sub-microsecond synchronization, FMMU, SyncManager and watchdog functions defined by the EtherCAT specification. Internal FIFOs decouple EtherCAT traffic from the host MCU, allowing a low-cost MCU to control a high-performance fieldbus. Typical applications include servo/stepper drives, I/O modules, sensors and actuators on EtherCAT networks, programmable logic controllers (PLC) sub-modules, robotics joint controllers and CNC axes. Industrial designers value the LAN9252TI/PT because it shrinks a complete 2-port EtherCAT slave - including magnetics and termination - onto a small PCB that talks to a low-cost SPI MCU. Designers should route the 100BASE-TX differential pairs as controlled-impedance (100 ohm differential) traces and connect the center tap of each transformer through the integrated termination resistors. The exposed thermal pad must be soldered to a sufficient copper pour to dissipate the roughly 0.5-1 W typical dissipation under 100 Mbps full-duplex operation. DC and ripple on each analog supply pin must be kept below 50 mVpp to maintain EtherCAT conformance. This page consolidates distributor pricing, drop-in alternatives, and engineering design notes that go beyond what the manufacturer datasheet provides, including same-family Microchip options and cross-brand EtherCAT competitor context.
LAN9255-I/ZMX019 - EtherCAT Slave Controller + Cortex-M4F MCU | Microchip
The Microchip Technology LAN9255-I/ZMX019 is a 2/3-port EtherCAT device controller (ESC) System-In-Package (SIP) integrating dual 100BASE-TX Ethernet PHYs, the Microchip LAN9253 ESC, and the Microchip SAM E53J ARM Cortex-M4F MCU into a single 128-pin TQFP (14x14 mm) package. It supports 100 Mbps (100BASE-TX) full-duplex communication, includes 512 kB of integrated MCU memory, and offers USB 2.0 plus RMII host interfaces for broad system connectivity. An EtherCAT slave controller is a specialized industrial-Ethernet IC that offloads the EtherCAT protocol stack (originally developed by Beckhoff Automation) from the host processor, allowing deterministic sub-cycle communication on standard 100BASE-TX cabling. EtherCAT belongs to the industrial-Ethernet protocol family alongside PROFINET, EtherNet/IP, and SERCOS, and is governed by the ETG (EtherCAT Technology Group). Within the broader hierarchy, the LAN9255 sits as an Industrial Communication IC -> Network Controller -> Semiconductor. Integrating the PHY, ESC, and application MCU into one SIP reduces board area, simplifies EMC design, and removes the need for an external host MCU in cost-sensitive slave designs. Key features of the LAN9255-I/ZMX019 include three EtherCAT ports (Port 0, Port 1, and a cascaded/loopback Port 2), integrated dual 100BASE-TX PHYs that eliminate external magnetics interfacing complexity, USB 2.0 Full-Speed (12 Mbps) device port, RMII interface for an external host MCU if desired, on-chip Cortex-M4F MCU with FPU for application code, hardware offload of EtherCAT mailbox and process-data handling, and industrial-grade -40 C to +85 C operation. The 128-TQFP package is lead-free and RoHS compliant for global industrial deployment. The LAN9255 architecture combines Microchip's proven LAN9253 ESC IP with the SAM E53J ARM Cortex-M4F microcontroller, enabling stand-alone EtherCAT slave designs. The dual integrated PHYs each provide full-duplex 100BASE-TX transceivers with HP auto-MDI/MDIX, removing the need for two external PHY ICs. Distributed clocks and cable redundancy features are handled in hardware, ensuring deterministic communication for servo, motion, and I/O applications. The device works with the MPLAB Harmony EtherCAT Slave Stack and Microchip's EVB-LAN9255 evaluation platform. Typical applications for the LAN9255-I/ZMX019 include EtherCAT servo drives, distributed I/O modules, stepper motor controllers, sensor and encoder EtherCAT slaves, hydraulic valve drivers, and industrial robot subsystems. The integrated MCU + dual-PHY combination is particularly attractive for designers building minimum-BOM EtherCAT slaves without a separate host processor. When designing with this part, ensure the 128-TQFP thermal pad is soldered to a substantial ground copper pour for heat extraction and signal-integrity performance. Use Microchip's AN-DS LAN9255 PHY layout guidelines for proper Ethernet magnetics and RJ45 interface. The integrated MCU eliminates the need for an external application processor in many designs, simplifying BOM cost. This page synthesizes distributor pricing, drop-in alternatives, and application-focused design guidance that goes beyond what the LAN9255 datasheet (Microchip document 00003646B) covers alone.
LAN9255-V/ZMX020 - EtherCAT Slave Controller with MCU | Microchip
The Microchip Technology LAN9255-V/ZMX020 is a 2/3-port EtherCAT Device Controller with integrated dual 100BASE-TX PHYs and an integrated SAM E53J 32-bit ARM Cortex-M4F MCU, packaged in a 128-pin TQFP-EP (14x14 mm) with exposed thermal pad. It combines an EtherCAT slave controller, two Ethernet PHYs, and an application microcontroller in a single System-In-Package (SiP), eliminating the need for an external MCU on simple EtherCAT slave node designs. An EtherCAT slave controller (ESC) is a specialized industrial-Ethernet IC that implements the Beckhoff EtherCAT slave protocol on the device side of an EtherCAT network. EtherCAT is a deterministic real-time Ethernet standard used for synchronized motion control, I/O, and drive communication in factory automation. The ESC sits below the EtherCAT master and the standard Ethernet/IP stack in the network hierarchy and works alongside general industrial controllers like PLCs and motion controllers. Key features of the LAN9255-V/ZMX020 include dual integrated 100BASE-TX Ethernet PHYs supporting 100 Mbps full-duplex, a 3-port EtherCAT switch fabric supporting daisy-chain and ring topologies, USB 2.0 FS device/host interface, RMII for external PHY connection, SPI/QSPI for host communication, and 1024 KB of integrated Flash and 256 KB SRAM inside the SAM E53J MCU die. The integrated MCU is pre-flashed with a bootloader and can run application code for simple slaves, removing external processor overhead. The device is designed for high-volume industrial EtherCAT slave applications where board space, BOM cost, and deterministic cycle time are critical. Typical cycle times below 62.5 µs are achievable through hardware FMMU, SyncManager, and DC (Distributed Clocks) engines. Typical applications include EtherCAT digital and analog I/O modules, servo drives and stepper motor drivers, robotics servo nodes, sensor hubs, encoder interfaces, and other industrial automation peripherals. The dual PHY + MCU integration makes it ideal for compact, low-cost slaves with on-board intelligence. When designing with the LAN9255, ensure proper 25 MHz reference oscillator quality for jitter compliance, route the MII/RMII traces as 50-ohm controlled impedance, and place the decoupling capacitors as close to the supply pins as possible. The exposed thermal pad must be soldered to a sufficient copper pour for thermal dissipation. This page synthesizes distributor pricing across 9 channels, true drop-in alternatives in the same 128-TQFP-EP footprint, and practical design notes not found in the manufacturer datasheet, giving engineers a single source for selection, sourcing, and integration.
LAN9311-NU - 2-Port 10/100 Managed Ethernet Switch | Microchip
The Microchip LAN9311-NU is a full-featured, 2-port 10/100 managed Ethernet switch controller with integrated 10/100 Base-T/TX PHY support and an I2C interface, packaged in a 128-pin VTQFP measuring 14 x 14 mm. It delivers 10 Mbit/s and 100 Mbit/s operation for embedded networking products that need compact, integrated Ethernet connectivity. An Ethernet switch controller is a semiconductor that combines media-access control, frame handling, port management, and physical-layer functions into an embedded networking solution. The LAN9311 belongs to the interface IC and Ethernet switch hierarchy, allowing equipment designers to connect processors, controllers, sensors, and industrial equipment through managed 10/100 Ethernet without implementing a discrete switching subsystem. Verified features include a 32 Kbyte buffer RAM, a 1 K-entry forwarding table, and IEEE 802.1Q VLAN support with 16 groups. The switch also provides programmable quality-of-service support through four dynamic queues per port. Full-duplex and half-duplex operating modes are supported, giving designers flexibility across embedded infrastructure, industrial automation, and connected equipment. The LAN9311-NU integrates two 10/100 Ethernet ports and combines switch management with a 16-bit non-PCI host interface for embedded processor connectivity. Its managed-switch functions include VLAN grouping, QoS prioritization, address learning through the 1 K-entry forwarding table, and frame buffering through 32 Kbyte of RAM. These features support deterministic traffic handling when multiple endpoints share the same two-port Ethernet segment. Typical uses include industrial Ethernet gateways, embedded routers, set-top and communication equipment, factory-floor controllers, and networked measurement systems. A design can place the controller beside a processor and Ethernet magnetics, then use the host interface for configuration and status monitoring. The supplied LAN9311 reference schematic emphasizes placing bulk and low-ESR decoupling capacitors close to the specified power pins. The main design consideration is interface and power integrity. Follow the manufacturer's reference schematic and 128-pin VTQFP placement checklist, especially the 49.9 ohm TX termination pull-up arrangement described for the second PHY interface. Confirm package routing, magnetics isolation, thermal performance, and all pin assignments against the manufacturer documentation before layout release. This page consolidates verified distributor availability, package and interface details, cross-reference findings, comparison parameters, and practical LAN9311 layout guidance. It is intended to accelerate component selection and PCB planning while clearly separating confirmed specifications from data requiring a manufacturer datasheet review.
LAN9312-NU - 2-Port 10/100 Managed Ethernet Switch | Microchip
Microchip Technology LAN9312-NU is a two-port 10/100 managed Ethernet switch with a 32-bit non-PCI CPU interface, IEEE 802.3 Ethernet support, and 128-pin VTQFP packaging. It combines two integrated Fast Ethernet network ports with switching and host-interface functions for embedded systems. According to the verified manufacturer and distributor results, the LAN9312-NU supports 10BASE-T and 100BASE-TX operation, full- and half-duplex protocols, and 802.1D/802.1Q network-management protocols. A managed Ethernet switch is a network-interface device that connects multiple Ethernet ports and forwards frames between them while providing management functions beyond basic unmanaged switching. In the broader hierarchy, LAN9312-NU belongs to Ethernet switches, then network interface controllers, interface ICs, and semiconductors. Its integrated two-port architecture can reduce the need for separate Ethernet PHYs and switch devices in embedded equipment. Key verified features include two 10/100 Ethernet ports, integrated 10BASE-T/100BASE-TX PHY support, a parallel 32-bit non-PCI CPU interface, and support for industry-standard Fast Ethernet protocols. The verified product listings identify the package as 128-pin VTQFP, measuring 14 mm by 14 mm. The device is intended for embedded applications where performance, flexibility, integration, and system-cost control are important. The LAN9312-NU architecture is designed to interface an embedded processor directly with Ethernet networking while avoiding a PCI bus requirement. This makes it suitable for industrial controllers, embedded gateways, test equipment, building-automation controllers, and other systems requiring dual-port Fast Ethernet connectivity. The independent port support also allows designs to use two network links rather than a single-port Ethernet arrangement. Typical deployment considerations include correct magnetics selection, controlled impedance routing, termination placement, power-supply decoupling, and validation of the non-PCI host interface. The verified Microchip placement checklist specifically calls for the LAN9312 (X)VTQFP PHY interface to place the 49.9 ohm TX termination pull-up close to the appropriate LAN9312 pins when Auto-MDIX is enabled, or close to the magnetics when Auto-MDIX is disabled. For exact pin assignments, timing, electrical limits, clock requirements, and initialization values, use the manufacturer datasheet rather than distributor summaries. The supplied web results do not provide complete verified values for several detailed electrical, timing, and package parameters; those fields are explicitly marked as data-needed below. This page combines verified product identity, protocol capability, package information, sourcing links, and design guidance while avoiding unsupported parameter invention.
LAN9352/ML - 2-Port 10/100 Managed Ethernet Switch, SPI/SQI | Microchip
The Microchip LAN9352/ML is a high-performance, small-footprint, full-featured 2-port managed Ethernet switch with integrated 10/100 Base-T/TX PHYs, delivered in a 72-pin QFN (10x10 mm) package with exposed pad. It targets consumer, embedded, and industrial designs that require highly integrated, cost-effective dual-port switching with a non-PCI 16-bit SPI/SQI host interface. The device supports 1.8V to 3.3V I/O and core supplies, easing integration with low-voltage MCUs and ASICs. A managed Ethernet switch is a Layer-2 networking device that connects multiple Ethernet segments, performs MAC-based frame forwarding, and exposes configuration/management features such as VLANs, QoS, port mirroring, and statistics counters. The LAN9352 sits in the managed-fast-Ethernet-switch IC taxonomy: Ethernet switch -> Layer-2 switch -> managed switch -> integrated-PHY switch. Unlike an unmanaged switch, the LAN9352/ML allows the host MCU to program registers for traffic shaping, IGMP snooping, and storm control, which is critical for real-time industrial protocols and AV streaming. Key features include two integrated 10/100 PHYs with HP Auto-MDIX, support for IEEE 802.1Q VLAN and 802.1p QoS priority, a 16-bit SPI/SQI host interface, optional I2C management, and 32 KB of internal packet buffer. The device operates across the commercial 0C to 70C temperature range and supports Energy Efficient Ethernet (EEE) idle patterns, making it suitable for power-sensitive embedded applications. The LAN9352/ML uses Microchip's proprietary switch fabric and supports cut-through and store-and-forward modes, along with 1.5 KB per-port address table. Hardware-based QoS with four priority queues and a per-port rate limiter enable deterministic traffic shaping for industrial Ethernet, audio/video bridging (AVB), and PROFINET-style real-time protocols. Typical applications include industrial Ethernet gateways, factory automation PLCs, building automation controllers, IP surveillance NVR/DVR switches, point-of-sale terminals, embedded web server appliances, and consumer smart-home hubs that need a low-BOM 2-port switch fabric. The integrated dual-PHY approach removes the need for an external Ethernet transformer-pair, shrinking PCB area. When designing with this device, allocate at least 4-layer routing for the two 100BASE-TX differential pairs to maintain return loss. Place the 72-QFN exposed pad soldered to a continuous ground plane for thermal dissipation; a stitched via array under the EP is recommended. The host SPI/SQI clock can run up to 80 MHz - check MCU timing margin when the switch is in cut-through mode. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, plus a 5-question FAQ block for AEO citation.
LAN9352/PT - 2-Port 10/100 Managed Ethernet Switch | Microchip
The Microchip Technology LAN9352/PT is a 2-port 10/100 managed Ethernet switch with integrated 10/100 Base-T/TX PHYs, I2C and SPI host interfaces, and an 80-pin TQFP exposed-pad package measuring 12 x 12 mm. It combines two Ethernet ports, switch management, and host connectivity in one device for cost-controlled embedded networking. The verified source identifies it specifically as a 2-port, 100 Mbps managed Ethernet switch. An Ethernet switch is a network-interface semiconductor that connects multiple Ethernet endpoints, forwards frames between ports, and exposes control functions to a host processor. The LAN9352/PT sits in the hierarchy of Ethernet controller, interface IC, network switch, and embedded connectivity semiconductor. Its integrated 10/100 PHIs reduce external PHY requirements while its managed-switch architecture supports configuration by an embedded controller rather than a simple fixed-function repeater. The principal verified features include two 10/100 Ethernet ports, integrated 10/100 Base-T/TX PHYs, and both I2C and SPI host interfaces. These interfaces give the embedded system two control paths, while the managed architecture provides a feature set intended for consumer, embedded, and industrial designs. Microchip describes the family as optimized for systems that need high integration, design flexibility, ease of integration, and system cost control. The LAN9352/PT targets equipment that needs a compact two-port network node without a separate Ethernet switch and external PHY components. A host processor can configure the device through I2C or SPI, making it suitable for gateways, embedded controllers, industrial interfaces, and connected products. Exact port ordering, register defaults, electrical limits, timing, and management features must be confirmed in the manufacturer datasheet before schematic release. A primary integration consideration is the 80-pin 12 x 12 mm TQFP exposed-pad footprint. The land pattern, exposed-pad connection, clock source, magnetics or integrated PHY support components, and host signals must follow the reference design. Do not treat a functional LAN9352-family ordering code as automatically drop-in compatible; the I, TI, and temperature-grade suffixes can change device features or qualification. For an embedded two-port Ethernet design, the LAN9352/PT offers meaningful consolidation of switch and PHY functions. Selection depends on the required port count, host interface, timing, clock architecture, environmental grade, package, and production availability. This page combines verified distributor and manufacturer information with application guidance while leaving unverified electrical values explicitly marked for completion.
LAN9354/ML - 3-Port 10/100 Managed Ethernet Switch | Microchip
The Microchip LAN9354/ML is a 3-port managed 10/100 Base-T Ethernet switch with an I2C interface, supplied in a 56-QFN 8 x 8 mm package. It integrates three Fast Ethernet switch ports and is application-optimized for consumer, embedded, and industrial electronic designs where network connectivity must be consolidated into a small-footprint controller. The verified distributor description identifies 10/100 Base-T, TX PHY, and I2C functionality. An Ethernet switch is a network-semiconductor device that connects multiple endpoints through a common switching fabric. A managed switch adds configuration, status, interrupt, and control capabilities rather than operating only as a transparent Layer-2 bridge. The LAN9354 family therefore sits between basic Ethernet PHYs, larger multi-port switches, and host-interface controllers used in embedded networking equipment. Verified features include three managed 10/100 Ethernet ports, a 3.3 V operating supply, wake-up support, power-up or reset configuration, non-volatile configuration storage, and interrupt generation. These functions support designs requiring controlled startup behavior, persistent configuration, and host-visible events. The 56-QFN package helps reduce board area while providing a high pin count for integrated Ethernet and control functions. The LAN9354/ML is suited to embedded systems, industrial controllers, networked peripherals, and compact communications equipment. Its managed-switch architecture can simplify the implementation of multiple Ethernet endpoints while preserving configuration flexibility. The I2C interface is relevant to embedded firmware because the host can use a serial control bus rather than allocating parallel management pins. A critical design consideration is that the exact electrical limits, pin names, exposed-pad connection, reference clock requirements, magnetic-interface components, and recommended layout constraints must be taken from the manufacturer datasheet. The verified data does not provide those details, so they are not guessed here. Use the official LAN9354 product page and datasheet for schematic, layout, and timing review. This page combines verified distributor and manufacturer information with explicit data gaps, practical application guidance, and sourcing references. It does not invent missing electrical specifications, pin assignments, or lifecycle claims.
LAN9355/ML - 3-Port 10/100 Managed Ethernet Switch | Microchip
The Microchip Technology LAN9355/ML is a highly integrated, 3-port managed Ethernet switch with three 10/100 Base-T/TX PHY interfaces, 10 Mbps and 100 Mbps support, and an I2C control interface in an 88-QFN 12 x 12 mm package. According to the verified distributor data, it is optimized for embedded networking designs and provides a compact Ethernet switching solution for consumer, embedded, and industrial equipment. An Ethernet switch is a network-interface semiconductor that receives frames on one port and forwards them to the appropriate destination port. A managed switch adds configuration and monitoring functions, allowing firmware or a host controller to control traffic behavior instead of relying only on automatic learning. The LAN9355/ML integrates the switching fabric, PHYs, management interface, and host-facing interfaces needed to connect several 10/100 Ethernet links on one PCB. The verified product information identifies support for 10 Mbps and 100 Mbps operation, an I2C interface, and a 1.8 V to 3.3 V supply range. The device also supports MII, RMII, and Turbo MII host-interface formats according to the distributor listing. These interfaces allow the Ethernet subsystem to connect to a microcontroller, application processor, or other network controller without implementing separate external PHYs for every port. The LAN9355/ML is intended for embedded systems that need compact multiport Ethernet connectivity. Typical uses include industrial control equipment, connected consumer products, embedded gateways, and host systems requiring two or more wired network ports. Its three-port architecture can connect internal devices to an upstream network while preserving an Ethernet interface for management or service traffic. Designers should pay close attention to the exact package pinout, required external magnetics or PHY integration details, clocking, transceiver layout, and the host-interface configuration specified by the manufacturer datasheet. The supplied search results confirm the LAN9355 family and LAN9355/ML package identity but do not provide complete electrical values, register details, timing limits, or a complete pinout table. Those parameters must be checked against the official Microchip datasheet before layout or production release. This page combines the verified manufacturer description, distributor package and interface details, sourcing links, and practical selection guidance. It distinguishes confirmed LAN9355/ML facts from data requiring direct datasheet confirmation rather than inferring specifications that were not present in the supplied sources.
LAN9355/PT - 3-Port 10/100 Managed Ethernet Switch | Microchip
The Microchip LAN9355/PT is a high-performance, small-footprint, fully-featured 3-port managed Ethernet switch with integrated 10/100 Base-T/TX PHYs and an I2C management interface, housed in an 80-pin TQFP-EP (12x12 mm) package with exposed thermal pad. It supports full-duplex and half-duplex operation, HP Auto-MDIX on all ports, and IEEE 1588 precision time protocol timestamping for time-sensitive applications. What is a managed Ethernet switch? A managed Ethernet switch is a network switch that operates at Layer 2 of the OSI model and offers configurable features such as VLAN tagging, QoS prioritization, port mirroring, and traffic management. Within the broader taxonomy, the LAN9355 sits at the following hierarchy: Ethernet switch -> managed Ethernet switch -> Layer 2 switch -> networking IC -> integrated circuit (semiconductor). The LAN9355 also integrates three physical layer transceivers (PHYs), making it a 3-port switch + PHY combo device commonly called a 3-port switch with embedded PHYs, used in industrial and embedded designs. Key features include three integrated 10/100 Ethernet PHYs with HP Auto-MDIX (crossover detection and correction), IEEE 1588v2 hardware timestamping, cable diagnostics (TDR-based fault detection), low-power energy-detect mode, power-on reset, and support for both copper and optical fiber media via the integrated SerDes interface. The device operates from a single 3.3V supply with 1.8V/2.5V tolerant I/Os and supports 100BASE-FX fiber connectivity. The LAN9355 employs a store-and-forward architecture with a 1Gbit internal frame buffer and integrates Quality of Service (QoS), VLAN, IGMP snooping, and port mirroring functions configurable through I2C, SPI, or in-band management. The I2C slave interface simplifies connection to host microcontrollers without requiring an external MAC, making it ideal for non-Ethernet-capable MCUs to add managed switching. Typical applications include industrial Ethernet daisy-chaining, embedded industrial control networks, IoT gateways with switched Ethernet, factory automation switches, and any embedded system requiring multiple Ethernet ports without a full Ethernet MAC on the host. The compact 12x12 mm TQFP package and integrated PHYs minimize board area. When designing with this device, ensure proper power decoupling with 0.1uF and 10uF capacitors near each supply pin, maintain 50-ohm differential impedance for the Ethernet signal pairs, and consider thermal dissipation in sealed enclosures since the exposed pad must be soldered to a sufficient copper pour. Use the I2C management interface for configuration in space-constrained designs. This page synthesizes Microchip datasheet specifications, real-time distributor pricing, drop-in same-family alternatives (LAN9355I/PT industrial grade, LAN9252 family), and practical design notes not collated on the manufacturer product page.
LAN9420-NU - PCI Fast Ethernet Controller | Microchip
The Microchip Technology LAN9420-NU is a single-chip 10/100 Fast Ethernet controller with a PCI Local Bus interface, supplied in a 128-pin VTQFP package. It integrates a PCI Revision 3.0-compliant interface, DMA controller, Ethernet MAC, and 10/100 Ethernet PHY, providing a compact networking solution for PCI-based embedded systems. The verified distributor listing specifies a 3.3 V supply and an operating temperature range of 0°C to 70°C. What is a Fast Ethernet controller? A Fast Ethernet controller is an integrated semiconductor that connects a host system to a 10/100BASE-T Ethernet network. It combines protocol processing, media access control, physical-layer signaling, and often host-bus or DMA functions into one device. In the broader hierarchy, the LAN9420-NU is an Ethernet controller, a network interface controller, an interface IC, and ultimately a semiconductor. Key verified features include a PCI Local Bus Specification Revision 3.0-compliant interface, integrated DMA controller, Ethernet MAC, and 10/100 Ethernet PHY. The manufacturer documentation also identifies a system configuration diagram for the LAN9420/LAN9420i family and describes memory-mapped control and status registers. These features reduce the number of external networking components required in a PCI embedded platform. The controller is designed for embedded systems that need Fast Ethernet connectivity without a separate external Ethernet PHY. Its integrated architecture can simplify board design while preserving a conventional PCI host interface. The verified operating specification is 0°C to 70°C, making it suited to systems requiring a commercial-temperature component where that range is appropriate. Typical applications include industrial automation equipment, embedded instrumentation, consumer electronics, and PCI-based data-acquisition or communication systems. The exact host platform, clocking, transceiver, connector, power supply, and firmware requirements still need to be verified against the complete manufacturer datasheet before design release. The LAN9420-NU should not be selected solely from the distributor summary when detailed electrical, timing, and register requirements are needed. For layout, follow the manufacturer placement checklist and keep the specified bypass capacitors close to the relevant power pins, including the core and PLL supplies. Validate signal integrity, reset behavior, interrupt routing, DMA configuration, and thermal performance on the final board. This page distinguishes verified facts from parameters that require confirmation from the complete LAN9420/LAN9420i datasheet.
LAN9500A-ABZJ - Hi-Speed USB 2.0 to 10/100 Ethernet Bridge | Microchip
The Microchip LAN9500A-ABZJ is a single-chip Hi-Speed USB 2.0 to 10/100 Ethernet bridge controller integrating a USB 2.0 PHY, USB 2.0 device controller, 10/100 Ethernet MAC, 10/100 Ethernet PHY, TAP controller, EEPROM controller, and FIFO controller in a compact 56-pin QFN (8x8 mm) package. The device implements Control, Interrupt, Bulk-in, and Bulk-out USB endpoints and is compliant with the USB 2.0 Hi-Speed standard, providing 480 Mbps upstream connectivity to a host processor. An Ethernet bridge controller is a semiconductor device that translates between two dissimilar network or bus protocols, presenting one physical interface to the host system and another to the network. In this product's case, the bridge maps USB 2.0 bulk transfers to IEEE 802.3/802.3u Ethernet frames, allowing any embedded host with a USB port to add wired Ethernet without a native MAC. The bridge belongs to the broader hierarchy: USB-to-Ethernet bridge -> network interface controller -> Ethernet controller -> interface IC -> integrated circuit. Key features include integrated HP Auto-MDIX for automatic cable polarity correction, auto-negotiation per IEEE 802.3u, flexible address filtering with a 48-bit perfect address, 64 hash-filtered multicast addresses, and a TAP controller for diagnostic packet capture. The on-chip PHY embeds ±8 kV HBM and ±15 kV air discharge ESD protection, which eliminates external TVS arrays on the magnetics lines and shrinks BOM cost in cost-sensitive designs. The LAN9500A is built on a low-power CMOS process and operates from three internal rails (1.2 V, 2.5 V, 3.3 V) generated from a single 3.3 V supply. Reduced power operating modes plus an EEPROM-less design option help reduce overall system BOM and standby current. An external MII interface allows connection of an additional external PHY for dual-port or fiber applications, although most designs use the integrated PHY. Typical applications include USB-to-Ethernet dongles, embedded Linux/Windows single-board computers, industrial controllers needing network connectivity, set-top boxes, printers with network ports, and USB port-replicators. The integrated PHY and USB PHY make it ideal where board area is constrained but full 10/100 throughput is required. When designing with this device, ensure the 25 MHz crystal meets the datasheet's ±50 ppm tolerance and load capacitance specification. Use a 1 Mbit/s Ethernet magnetics module with a 1:1 turns ratio, and follow Microchip's reference schematic for the EXRES resistor value, which differs from the original LAN9500 part. This page consolidates distributor pricing from DigiKey and Mouser, three verified same-brand drop-in alternatives from Microchip's LAN95xx family, and PCB design notes not present in the standalone datasheet PDF.
LAN9500A-ABZJ-TR - USB 2.0 to 10/100 Ethernet Controller | Microchip
The Microchip Technology LAN9500A-ABZJ-TR is a Hi-Speed USB 2.0 to 10/100 Ethernet controller IC that integrates a USB 2.0 device controller, USB PHY, 10/100 Ethernet MAC, and 10/100 Ethernet PHY into a single chip, housed in a 56-pin QFN (8x8 mm) package with exposed pad. It supports USB 2.0 Hi-Speed (480 Mbps), 10Base-T and 100Base-TX Ethernet, HP Auto-MDIX, and provides an external MII interface for connecting an additional PHY. A USB-to-Ethernet controller is a bridge IC that converts USB transactions from a host processor into Ethernet frames on a network. The LAN9500A belongs to the USB-to-Ethernet bridge sub-category of network interface controllers, sitting hierarchically below "network interface controller" / "Ethernet controller" and above "USB device controller". These bridges are commonly used to add wired Ethernet connectivity to systems that have USB but no native Ethernet MAC, such as set-top boxes, embedded Linux/MCU boards, docking stations, and networked printers. Key features include USB 2.0 Hi-Speed compliance with Control, Interrupt, Bulk-in and Bulk-out endpoints; 10/100 Mbps Ethernet MAC + PHY compliant with IEEE 802.3 and IEEE 802.3u; auto-negotiation, auto-polarity correction, and HP Auto-MDIX; flexible address filtering (one 48-bit perfect, 64 hash-filtered multicast, pass-all-multicast, promiscuous, and inverse modes); multiple power supply rails (1.2V, 2.5V, 3.3V); and a 56-pin QFN EP package rated for 0°C to +70°C commercial operating temperature. Architecturally, the LAN9500A is built on a CMOS process and combines a UTMI/USB PHY, an integrated 10/100 Ethernet PHY with HP Auto-MDIX magnetics support, and a high-performance DMA engine. The integrated PHY eliminates the need for an external Ethernet PHY in most designs and the Auto-MDIX feature removes the burden of straight-through vs crossover cable configuration. Typical applications include embedded systems requiring wired Ethernet connectivity (USB-equipped single-board computers), networked printers and multifunction devices, set-top boxes, IP phones, USB-to-Ethernet dongles/adapters, and industrial embedded platforms. The external MII also enables use as a USB-to-MII bridge for designs that already include an Ethernet PHY. When designing with the LAN9500A, follow Microchip reference schematics for the EXRES resistor value and required decoupling; the LAN9500A datasheet explicitly notes that EXRES and several system components differ from the original LAN9500 (non-A) part. Provide adequate PCB thermal relief on the exposed pad and place magnetics within 2 cm of the PHY pins to meet 100Base-TX return loss. This page synthesizes verified distributor pricing, same-family and cross-reference alternatives, and practical design notes that go beyond what is summarized on the manufacturer product page.
LC4107C-X2 LCD Driver IC | onsemi | Display Interface
The onsemi LC4107C-X2 is an LCD driver interface IC offered in an unspecified package, with verified distributor information identifying it as an LCD driver, display driver, and interface component. The available data does not state the supply voltage, output count, interface logic, package pin count, operating-temperature range, or electrical timing values; those specifications remain [DATA_NEEDED: verified technical specifications] until the manufacturer datasheet is obtained. Its verified distributor description is sufficient to position it for LCD display-driver and interface applications, but not to infer a specific LCD segment count or pinout. An LCD driver IC is an interface device that translates control information and timing signals into electrical drive levels required by LCD glass. In the power hierarchy, it belongs to integrated circuits, interface ICs, display drivers, and discrete display-interface functions. LCD drivers may control segment and common electrodes, provide bias generation or level conversion, and coordinate display refresh timing. The LC4107C-X2 is associated with display-driver listings rather than power-management, memory, or general-purpose logic functions. The verified records identify the LC4107C-X2 as an onsemi part distributed through DigiKey, Rochester Electronics, Ampheo, JAK Electronics, YIC Electronics, Full Electronic, and Octopart. One Octopart record reports a price of $1.19000 and 32,840 units in stock, while another distributor record reports 8.462 units and unit pricing starting at $1.58 with volume discounts stated for 10, 100, 500, and 1,000 units. Because the supplied records do not provide a complete, normalized manufacturer datasheet or a single verified stock quantity, engineers should confirm electrical limits, pin compatibility, lifecycle status, and current inventory before design release. Typical design use includes LCD instrument panels, small alphanumeric or graphic displays, embedded control interfaces, and legacy display assemblies where an existing PCB footprint and timing architecture must be preserved. The device is not suitable for direct replacement selection based only on the distributor category label; the package, pinout, interface voltage, segment count, refresh requirements, and display-bias details must be checked against the original design and the authoritative onsemi documentation. The main engineering trade-off is availability versus verification depth. Distributor inventory is reported, but the supplied source snippets omit most electrical and mechanical parameters. Before soldering, confirm the exact package and pin numbering, required supply rails, input logic levels, LCD bias method, maximum clock or update rate, and recommended decoupling using the manufacturer datasheet. For price and availability decisions, use the reported values as of 2026-10-23 and reconfirm at the distributor before purchasing. This page consolidates verified distributor category, inventory, pricing, and source links while marking unprovided technical values for verification. It intentionally does not invent display dimensions, LCD segment count, package details, pin names, timing figures, or compliance claims that are absent from the supplied data.