介面 IC
子分類
產品（3,000+)
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.
LAN9218I-MT - 10/100 Ethernet Controller | Microchip Technology
The Microchip Technology LAN9218I-MT is a single-chip 10/100 Base-T/TX Ethernet controller with a 32-bit parallel host interface and 100-LQFP TQFP package measuring 14 x 14 mm. Designed for embedded systems, it combines a 10/100 Ethernet PHY, controller, and packet-buffer memory in one device, supporting economical integration without a discrete network interface controller and separate Ethernet transceiver. The LAN9218I-MT also provides HP Auto-MDIX support and industrial-temperature capability. An Ethernet controller is an interface IC that connects an embedded processor or programmable controller to a wired Ethernet network. In the device hierarchy, the LAN9218I-MT belongs to the network interface controller and Ethernet interface IC class, combining a media-access-control function, physical-layer transceiver, and host-facing parallel bus. It is intended to reduce system cost while providing controlled access to Ethernet frames, status information, and packet buffers. Verified device attributes include support for 10/100 Base-T/TX operation, a 32-bit parallel interface, HP Auto-MDIX, and 16 KB of internal receive SRAM. According to the Microchip LAN9218i data sheet, the receive FIFO can hold more than 200 received packets. Automatic flow-control packet generation can reduce packet loss when the receive FIFO approaches capacity, while external wake mechanisms provide additional low-power integration options. The integrated PHY is designed for embedded applications where performance, flexibility, ease of integration, and system cost control are important. The parallel interface supports direct connection to host buses without requiring a separate serial Ethernet MAC interface. However, its 100-pin package and numerous host signals require careful PCB layout and enough board area for controlled impedance routing to the Ethernet magnetics. Typical uses include industrial control systems, embedded gateways, set-top equipment, printers, building-automation controllers, and industrial data-acquisition equipment. The device is particularly appropriate when an embedded processor requires a wired 10/100 Ethernet connection and the design team wants the PHY, MAC, packet storage, and Auto-MDIX support integrated into one component. Designers should follow the manufacturer’s reference circuit for magnetics, termination, bias resistors, decoupling, and high-speed layout. Driver compatibility and Auto-MDIX implementation must be checked against the exact LAN9218i hardware and software documentation. Although standard LAN9218 software drivers may support LAN9218i devices, the verified data sheet notes that supporting HP Auto-MDIX may require different magnetics and passive components and possibly a minor PCB change. This page consolidates verified manufacturer and distributor information, identifies the documented same-brand alternatives, distinguishes unavailable pricing and pin-mapping data, and highlights integration constraints that are easy to miss when comparing Ethernet controllers.
LAN9220-ABZJ - 10/100 Ethernet Controller w/ PHY | Microchip
The Microchip Technology LAN9220-ABZJ is a full-featured single-chip 10/100 Ethernet controller with an integrated 10BASE-T/100BASE-TX PHY, a 16-bit parallel MII host interface, and 1.8 V / 3.3 V dual-supply operation, housed in a 56-pin QFN package with an exposed ground pad (8 x 8 mm). The -ABZJ ordering code designates the tray packing option with a 0 °C to +70 °C commercial temperature grade. An Ethernet controller is an interface IC that manages the framing, media access and error handling of an Ethernet link. In the product taxonomy the LAN9220 sits at the network interface controller (NIC) level, above the physical layer (PHY) and below the communications IC and interface IC families. Because the MAC and the PHY are integrated on one die, a host processor only needs to drive a simple parallel bus rather than wiring two separate chips with a narrow interface between them. Key features include full IEEE 802.3 10BASE-T and IEEE 802.3u 100BASE-TX compliance, HP Auto-MDIX automatic crossover detection, 16 KB of internal packet buffering, and a 16-bit MII interface that runs in both 8-bit and 16-bit modes. Digital and analog rails are supplied separately at 1.8 V and 3.3 V so that a 3.3 V I/O host can be bridged to 1.8 V core logic without level translation. The QFN package exposes a ground pad that must be tied to the ground plane for both heat removal and low-inductance return. Internally the device is a conventional store-and-forward MAC with a separate 10/100 PCS and analog PHY. HP Auto-MDIX removes the need for a strapping resistor that forces master or slave operation, and the twisted-pair pins swap transmit and receive roles automatically when a reversed connection is detected. The MII interface presents RXD, TXD, TX_EN, RX_DV, RX_ER, COL, CRS and management signals to the host, giving the CPU full visibility of carrier, collision and error status. Microchip documents the recommended land pattern and thermal layout in the LAN9220 datasheet and in application note AN 18.4, Migrating from the LAN9215 to the LAN9220. Typical applications include industrial control and factory automation gateways, embedded Linux and RTOS network cards, IP cameras and security equipment, set-top boxes, print servers, test instrumentation and PLC serial-to-Ethernet bridges. The parallel MII interface suits hosts with an embedded MII or RMII-capable MAC, while the integrated PHY removes the need for external magnetics, line drivers and a separate PHY chip. Design attention should be paid to exposed-pad thermal vias and the separation of analog supply pins from digital switching currents. Microchip recommends a 4 x 4 grid of vias at 60 mil spacing in the exposed pad area to connect the pad to the board ground plane, and the datasheet land pattern chapter should be followed exactly rather than approximating the footprint. Decoupling should follow the values listed in the datasheet power supply section, with the 1.8 V and 3.3 V rails each carrying local bulk and high-frequency ceramic capacitance. This page consolidates the manufacturer product information, distributor listing data, drop-in alternatives and practical layout guidance for the LAN9220-ABZJ into a single engineering reference that goes beyond a distributor catalogue entry, including the migration caveats for designers moving up from the older LAN9215 family.
LAN9221-ABZJ - 16-Bit 10/100 Ethernet Controller | Microchip
The Microchip Technology LAN9221-ABZJ is a high-performance 16-bit non-PCI 10/100 Ethernet controller with an integrated Ethernet MAC, 10/100BASE-TX PHY, and parallel host interface, housed in a 56-QFN 8 x 8 mm package. It supports 10/100 Mb/s Ethernet operation, variable-voltage I/O, checksum offload engines, and glue-less connectivity to common 16-bit and 32-bit microprocessors and microcontrollers. An Ethernet controller is an interface integrated circuit that connects an embedded processor to a physical Ethernet network. The LAN9221 combines medium-access control, physical-layer signaling, data handling, and host-bus interfacing in one device. This places it within the interface-IC hierarchy, where it bridges embedded processing systems and wired network communication while reducing external PHY count and board complexity. The controller is designed around a high-throughput SRAM-like parallel host interface for 16-bit applications. Its integrated checksum engines can automatically generate and validate Internet or TCP/IP checksums, reducing processor overhead. The integrated 10/100BASE-TX PHY supports connection to a standard RJ45 network through the appropriate magnetics and magnetic-interface circuitry, while variable-voltage I/O allows the host-side interface to operate across a range of supply levels. Microchip describes the LAN9221 and LAN9221i as full-featured, single-chip 10/100 Ethernet controllers intended for embedded systems where performance, flexibility, ease of integration, and system-cost control are important. The architecture provides a hardware interface for processors that lack native Ethernet support, while checksum offload and integrated PHY functions reduce both firmware burden and external component count. Typical uses include industrial automation controllers, embedded gateways, serial-to-Ethernet equipment, test and measurement systems, building controls, and network-connected sensors. In these systems, the LAN9221 can sit beside a microcontroller, connect through its parallel host bus, and provide an Ethernet uplink for configuration, monitoring, telemetry, or control traffic. System designers must still provide the correct clock, memory interface, power distribution, magnetic interface, and Ethernet physical-layer implementation. PCB planning should preserve the manufacturer's recommended high-speed layout and decoupling arrangement because Ethernet signal integrity, clock jitter, controlled-impedance routing, and magnetic-component placement can affect field performance. The 56-QFN footprint also requires a thermal strategy appropriate for the final board environment. Use the pin-description and layout guidance in the manufacturer datasheet before assigning tracks or planning a replacement. This page consolidates the LAN9221-ABZJ product identity, application context, sourcing workflow, and drop-in replacement assessment. It also distinguishes functional Ethernet alternatives from true same-footprint drop-in parts, helping engineers avoid redesigns caused by interface, package, or feature mismatches.
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.
LAN9250I/ML - 10/100 Ethernet Controller | Microchip
The Microchip Technology LAN9250I/ML is a single-chip 10/100 Ethernet controller with an integrated Ethernet PHY, I2C and SPI host interfaces, and a 64-QFN 9 x 9 mm package. It supports 10 Mb/s and 100 Mb/s Ethernet operation and combines the controller, physical-layer transceiver, host interface, memory, and packet-processing functions in one device. An Ethernet controller is an interface IC that connects an embedded processor or microcontroller to a physical Ethernet network. Within the hierarchy of Ethernet interfaces, interface ICs, and semiconductors, the LAN9250I/ML provides a hardware interface between a host bus and a 10/100BASE-T network while reducing the need for external Ethernet components. Its integrated PHY makes it suitable for embedded systems requiring network connectivity without a discrete Ethernet transceiver. Key features include one integrated 10/100 Ethernet transceiver, simultaneous support for 10 Mb/s and 100 Mb/s data rates, and host connectivity through 8-bit or 16-bit parallel, SPI, or Quad SPI interfaces. The manufacturer datasheet also identifies a configurable host interrupt, internal FIFOs, and memories. These resources let the host receive and transmit Ethernet traffic without implementing the complete Ethernet physical layer in hardware. The LAN9250 architecture combines the Ethernet media-access controller and physical layer in one package. A parallel interface can provide higher host throughput than a serial interface when the system requires frequent packet movement. Conversely, SPI or Quad SPI reduces the number of host signal lines and can simplify connections to processors with limited parallel GPIO. Configuration of interrupt behavior and host access is handled through the device register interface. Typical applications include industrial Ethernet equipment, factory automation controllers, embedded data acquisition systems, building-automation equipment, and network-connected test products. The part is also appropriate for compact embedded platforms that require an Ethernet port but have limited board space. A host processor such as an STM32 or ATmega-class microcontroller can be paired with the LAN9250I/ML when local packet processing and application-level networking are required. Designers should verify the complete 64-QFN footprint, exposed-pad layout, decoupling requirements, clock source, and host-bus mode against the manufacturer datasheet before layout release. The industrial-temperature ordering code must also be checked against the system enclosure temperature. Because the supplied web evidence does not provide complete electrical limits or detailed pin names, those values should not be inferred from the distributor summaries. This page combines verified manufacturer and distributor data, practical interface-selection guidance, a same-package comparison, and design cautions that are not consolidated in the short catalog excerpts. It is intended to support sourcing and engineering review while clearly separating confirmed specifications from parameters that still require confirmation in the full Microchip datasheet.
LAN9250I/PT - 10/100 Industrial Ethernet Controller | Microchip
The Microchip Technology LAN9250I/PT is a single-chip 10/100 Ethernet controller with integrated 10/100 Base-T/TX PHY, SPI/SQI host-interface support, and I2C configuration support, supplied in a 64-lead TQFP exposed-pad package measuring 10 x 10 mm. It is designed for embedded systems that require a compact Ethernet interface without the cost and integration burden of separate controller and PHY devices. An Ethernet controller is a semiconductor that manages frame processing and communication between an embedded host and an Ethernet physical layer. The LAN9250 combines these functions as an integrated Ethernet interface IC. Within the product hierarchy, it sits between a general-purpose microcontroller or processor and the physical copper network, providing a hardware interface for 10 Mb/s or 100 Mb/s Ethernet communications. The device supports optical-fiber connectivity, IEEE 1588 timing support, a low-power operating mode, wake-up capability, power-on reset, and programmable LED indication. Its 1.8 V, 2.5 V, and 3.3 V supply options support embedded designs using multiple logic levels. These features allow the LAN9250I/PT to serve industrial controllers, embedded network equipment, automation systems, and communication products without requiring a separate Ethernet PHY. The integrated architecture reduces the number of external interface components and provides a unified path for host communication and physical-layer signaling. The SPI/SQI interface supports integration with embedded processors, while I2C provides a separate configuration path. The internal 25 MHz reference clock and derived subsystem clocks form the timing foundation for controller, PHY, and host-interface operations. Typical uses include industrial Ethernet gateways, factory automation controllers, embedded network servers, serial-to-Ethernet equipment, building automation interfaces, and instrument controllers. The industrial temperature range of -40°C to +85°C supports applications across commercial, industrial, and extended-temperature embedded equipment where compact networking and programmable status indication are required. PCB design must account for the TQFP exposed pad, high-speed Ethernet layout requirements, suitable magnetic-component selection for copper interfaces, and the device's stated operating supply options. The exposed pad should be connected according to the manufacturer layout guidance, while differential Ethernet traces should be routed as a controlled-impedance pair with minimized disruption and appropriate via symmetry. This product page consolidates the verified manufacturer and distributor information, distinguishes the industrial-temperature ordering variant, summarizes interface and packaging constraints, and provides practical guidance for evaluating the LAN9250I/PT in embedded Ethernet designs.
LAN9250T/ML - 10/100 Ethernet Controller | Microchip Technology
The Microchip Technology LAN9250T/ML is a single-chip 10/100 Base-T/TX Ethernet controller with integrated Ethernet PHY and selectable 8/16-bit, SPI, or SQI host interfaces, packaged in a 64-QFN 9 x 9 mm package. It is designed for embedded applications that require local Ethernet connectivity, flexible processor integration, and system-level cost control without a separate Ethernet controller and physical-layer transceiver. An Ethernet controller is an interface IC that manages communication between an embedded processor and a physical Ethernet network. Within the product hierarchy, the LAN9250 combines an Ethernet MAC, a 10/100 Base-T/TX PHY, host-interface logic, and network-related control functions. The verified product information identifies support for optical-fiber links, IEEE 1588, low-power operation, wake-up, power-on reset, and programmable LED indication. The device supports a 10/100 Base-T/TX Ethernet connection and offers I2C, SPI, and parallel host-interface options described by the manufacturer as 8/16-bit or SPI/SQI. This interface flexibility allows the same controller family to be used with embedded processors, microcontrollers, DSPs, and other systems with different bus requirements. Its 64-QFN 9 x 9 mm package supports compact surface-mount integration, although detailed footprint dimensions and exposed-pad requirements must be taken from the manufacturer documentation. Typical implementation uses the controller as the network interface between a host processor and an Ethernet transformer or optical-fiber interface. Digital firmware and drivers connect the selected host bus to the Ethernet MAC, while the integrated PHY handles the physical signaling layer. The low-power mode and wake-up functions can help a system reduce energy use or resume network operation according to product-specific requirements. Programmable LED indication provides a hardware indication of link or activity status. Because the LAN9250T/ML integrates the MAC and PHY, board planning must address host-bus timing, clocking, power sequencing, magnetic-interface components, controlled-impedance routing, and the exact exposed-pad land pattern. The manufacturer datasheet and its associated errata should be consulted before schematic release. Verification should include operating-voltage limits, transceiver or media-interface implementation, reset behavior, wake-up operation, IEEE 1588 support, and environmental qualification. This page consolidates the verified manufacturer and distributor information for the LAN9250T/ML, including the 10/100 Ethernet capability, available interfaces, 64-QFN package information, feature list, sourcing links, and practical selection considerations. Detailed electrical limits, timing tables, absolute maximum ratings, pin functions, and package dimensions that were not exposed by the supplied records are intentionally identified as data-needed rather than inferred.
LAN9250T/PT - 10/100 Ethernet Controller | Microchip
The Microchip Technology LAN9250T/PT is a single-chip 10/100 Base-T Ethernet controller with integrated MAC and PHY functions, I2C and SPI host interfaces, jumbo-frame support, packet filtering, and Wake-on-LAN capability in a 64-pin TQFP exposed-pad package measuring 10 mm by 10 mm. It is designed for embedded systems that require a compact, integrated Ethernet interface without a separate Ethernet transceiver. An Ethernet controller is an interface IC that connects an embedded processor or programmable controller to a physical Ethernet network. The LAN9250 combines the Media Access Controller, which manages frame transmission and reception, with the physical-layer transceiver required to connect to a 10/100 Base-T network. This integration places the device within the embedded networking interface IC category and reduces external circuitry compared with a discrete MAC and PHY implementation. Key features include support for 10/100 Base-T/TX networking, an 8-bit or 16-bit SPI/SQI host interface, I2C configuration support, jumbo-frame handling, hardware packet filtering, and Wake-on-LAN. The I2C and SPI interfaces support embedded processor integration, while packet filtering helps the host ignore unnecessary traffic. Wake-on-LAN allows a connected system to respond to designated network wake events when otherwise inactive. The LAN9250 uses separate parallel host and serial host-interface options to accommodate different embedded architectures. Its integrated MAC and PHY organization allows the system processor to concentrate on application processing rather than low-level Ethernet framing and line signaling. The available verified material identifies the device as a full-featured single-chip controller intended to balance integration flexibility, performance, ease of implementation, and system cost. Typical applications include industrial Ethernet gateways, embedded control systems, test and measurement equipment, communications equipment, and networked microcontroller platforms. An industrial gateway benefits from the integrated 10/100 Ethernet interface, while an embedded controller can use the serial host interface and packet filtering to manage traffic efficiently. The same integration can simplify Wake-on-LAN-enabled remote equipment. PCB design should preserve the exposed-pad thermal and electrical requirements of the 64-pin TQFP package and follow the manufacturer's recommended power, clock, interface, and Ethernet-line layouts. Designers should confirm the complete pin assignments and reference design from the manufacturer datasheet before release because the supplied search results do not expose an authoritative pin table. This page consolidates verified distributor pricing, package and interface details, drop-in replacement evidence, application guidance, and design cautions into one engineering-focused reference. It distinguishes confirmed facts from parameters that require confirmation directly from the Microchip LAN9250 datasheet.
LAN9250TI/ML - 10/100 Ethernet Controller | Microchip
The Microchip Technology LAN9250TI/ML is a single-chip 10/100 Base-T/TX Ethernet controller with an integrated 10/100 Ethernet PHY, designed for embedded systems requiring flexible host connectivity and controlled integration cost. It supports 8-bit and 16-bit parallel host interfaces plus SPI and SQI serial connectivity, and is packaged in a 64-pin QFN measuring 9 mm by 9 mm. The device operates from a 1.8 V to 3.3 V supply range and is specified for an industrial temperature range of -40°C to 85°C. An Ethernet controller is an interface IC that connects an embedded processor or microcontroller to an Ethernet physical layer. The LAN9250TI/ML combines the Ethernet MAC, PHY, host interface, transmit and receive buffering, and interrupt support in one package. This integration reduces the number of external interface components and simplifies firmware access to Ethernet connectivity in industrial, communications, and embedded equipment. The principal interface choices provide different design tradeoffs. An 8-bit or 16-bit parallel interface can offer straightforward register access and useful throughput for microcontrollers with dedicated external bus resources. SPI or SQI uses fewer host pins and can suit systems with limited connector pins. A configurable host interrupt allows the controller to notify the processor of internal events, while the serial interface accesses system control and status registers, internal FIFOs, and memories. LAN9250TI/ML integrates the 10/100 Base-T/TX PHY with the Ethernet controller rather than requiring a separate physical-layer device for each network port. The 10/100 designation covers 10 Mbps and 100 Mbps Ethernet operation. Its 64-QFN construction supports compact embedded designs while providing numerous signal and supply connections for the parallel, serial, clock, interrupt, and Ethernet functions. Typical applications include industrial Ethernet gateways, serial-to-Ethernet equipment, programmable logic controllers, test instruments, factory automation controllers, and embedded monitoring systems. The parallel interface is particularly useful where a processor has sufficient external bus pins, while SPI or SQI reduces host pin requirements in compact connected products. The primary design consideration is host interface selection. Choose 8-bit or 16-bit operation when bus width and access speed are priorities; choose SPI or SQI when wiring density is more important. PCB layout must preserve the controller and PHY reference-network implementation, provide suitable power distribution, and route Ethernet differential pairs according to the manufacturer data sheet. This product page combines the LAN9250 family capabilities with practical interface guidance, application-specific design considerations, verified source links, and a comparison framework. It is intended to help engineers determine whether the LAN9250TI/ML architecture, package, temperature grade, and host-interface options fit an embedded Ethernet design.
LAN9250TI/PT - 10/100 Ethernet Controller | Microchip
The Microchip Technology LAN9250TI/PT is a single-chip 10/100 Ethernet controller with integrated 10BASE-T and 100BASE-TX PHY support for embedded networking systems. It provides I2C and SPI host interfaces, operates from 1.8 V, 2.5 V, or 3.3 V, and is packaged in a 64-pin TQFP exposed-pad package measuring 10 mm by 10 mm. An Ethernet controller is an interface integrated circuit that connects an embedded processor or microcontroller to a physical Ethernet network. The LAN9250 family combines a 10/100 Ethernet media-access controller, integrated transceiver, and host interface in one device. This consolidated architecture reduces external interface components, simplifies firmware integration, and supports cost-conscious embedded products where network connectivity is required. The LAN9250TI/PT supports 10 Mbps and 100 Mbps Ethernet operation and offers both I2C and SPI connectivity to its host. Its selectable 1.8 V, 2.5 V, and 3.3 V operating voltages allow integration with systems using multiple logic levels. The tape-and-reel ordering suffix identifies the production packaging, while the 64-TQFP exposed-pad construction provides a defined thermal and electrical connection through its center pad. The integrated Ethernet controller and PHY provide a compact hardware foundation for network-enabled embedded equipment. Designers can use the I2C interface when the host system favors a low-pin-count bus, or select SPI where higher transfer throughput or simpler firmware transaction handling is preferable. Configuration straps and internal registers support integration with a broader range of processor architectures rather than coupling the controller to one specific host family. Typical applications include industrial Ethernet equipment, factory automation controllers, embedded gateways, serial-to-Ethernet products, data acquisition systems, and networked sensors. The device is particularly suitable for compact embedded platforms that need 10/100 Ethernet without adding a discrete PHY. A 100BASE-FX-oriented variant is not implied by this ordering code; the identified LAN9250TI/PT supports copper Ethernet through its 10BASE-T and 100BASE-TX interfaces. PCB design should account for the exposed pad, high-speed differential pairs, magnetics, and the manufacturer’s recommended layout. Keep the Ethernet traces short, provide the specified decoupling, and follow the pin-description and layout guidance in the Microchip Technology datasheet. The exposed-pad connection also affects solder assembly and thermal performance, so its land pattern and paste volume should follow the package drawing. This product page organizes the LAN9250TI/PT electrical identity, package information, sourcing fields, and engineering guidance into one reference. It also distinguishes confirmed technical attributes from parameters that require confirmation in the full manufacturer datasheet, helping engineers plan board-level integration, interface selection, and production sourcing more efficiently.
LAN9250TV/ML - 10/100 Ethernet Controller | Microchip Technology
Microchip Technology LAN9250TV/ML is a single-chip 10/100 Base-T/TX Ethernet controller with integrated 8/16-bit SPI/SQI host interface, I2C support, and Ethernet PHY integration for embedded systems. It supports a 1.8 V to 3.3 V supply range and operates from -40 °C to 105 °C. The device is supplied in a 64-VFQFN exposed-pad package for surface-mount assembly, with the /ML suffix identifying tape-and-reel production packaging. An Ethernet controller is an interface IC that connects an embedded processor or microcontroller to a physical Ethernet network. The LAN9250 combines a 10/100 Ethernet MAC, physical-layer transceiver, host-interface logic, and network-memory access functions in one device. This integration reduces the number of external interface components required for industrial control, communications, instrumentation, and embedded networking designs. Key features include support for 10 Mbps and 100 Mbps Ethernet operation, an 8-bit or 16-bit host interface, and SPI/SQI connectivity. The verified product information identifies both I2C and SPI interfaces, a 1.8 V to 3.3 V operating-supply range, and a 64-VFQFN exposed-pad package. These characteristics make the LAN9250 suitable for systems that need deterministic embedded Ethernet access without relying on a separate Ethernet PHY. The device uses a serial host interface to exchange commands, status information, and packet data with the controlling processor. Because the LAN9250 includes the PHY, the board designer must also implement the appropriate Ethernet magnetics, connector, line-termination network, and signal-routing requirements described in the manufacturer datasheet. The exposed thermal pad provides the primary thermal-conduction path into the PCB copper and must be connected according to the package land pattern. Typical applications include industrial Ethernet controllers, programmable logic controllers, factory automation equipment, embedded instrumentation, serial-to-Ethernet gateways, and communication modules. The broad supply-voltage range allows integration with systems operating from 1.8 V, 2.5 V, or 3.3 V logic domains, provided that each rail and signal level is checked against the manufacturer requirements. A primary design consideration is PCB implementation. Place the controller, supporting decoupling, PHY-support components, and Ethernet magnetics according to the reference layout in the manufacturer datasheet. Keep high-speed Ethernet traces short, preserve the prescribed differential-impedance geometry, and provide a low-impedance ground path from the exposed pad to the ground plane. This product page combines the official LAN9250 documentation with distributor specifications, engineering application guidance, and drop-in replacement analysis. It is intended to help engineers evaluate interface capability, package implementation, thermal layout, lifecycle status, and sourcing requirements before beginning a PCB design.
LAN9250V/ML - 10/100 Ethernet Controller | Microchip | 64-QFN
The Microchip Technology LAN9250V/ML is a full-featured, single-chip 10/100 Ethernet controller designed for embedded applications where performance, flexibility, ease of integration, and system-cost control are required. It integrates a 10/100 Base-T/TX Ethernet controller with an 8-bit or 16-bit SPI/SQI host interface and is available in a 64-QFN package with an exposed pad. The verified distributor listing identifies the device as an Ethernet controller with one 10/100 Base-T/TX transceiver, 10 Mb/s and 100 Mb/s operation, 1.8 V, 2.5 V, and 3.3 V supply options, and I2C and SPI interfaces. The LAN9250 family is positioned for embedded systems that need compact Ethernet connectivity without implementing separate MAC, PHY, and host-interface blocks on the board. Its support for optical fiber, IEEE 1588, low-power mode, wake-up, power-on reset, and programmable LED indication makes it useful in industrial networking, embedded control, communications equipment, and factory-automation systems. The host processor connects through the serial interface, while the Ethernet side supports copper twisted-pair links and optical-fiber-related integration described in the manufacturer and distributor information. Design selection should account for the physical 64-QFN footprint, exposed-pad thermal requirements, connector magnetics, clocking, decoupling, and the specific voltage and interface configuration used by the host platform.
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/ML - 2/3-Port EtherCAT Controller | Microchip
Microchip Technology LAN9252I/ML is a 2/3-port EtherCAT slave controller with two integrated Ethernet PHYs, each containing a full-duplex 100BASE-TX transceiver, and it is supplied in a 64-QFN 9 x 9 mm package. The device supports 10/100 Mb/s Ethernet operation, 100BASE-FX through an external fiber transceiver, and HP Auto-MDIX for direct or crossover cabling. An EtherCAT device controller, or ESC, is a specialized interface IC that connects an embedded control system to an EtherCAT network. Within the hierarchy of EtherCAT slave controllers, network interface controllers, communication ICs, and semiconductors, the LAN9252 combines Ethernet physical-layer transceivers with EtherCAT protocol and host-interface functions. Its synchronous device SPI/SQI interface allows an external microcontroller or processor to access controller resources. The principal feature set includes two integrated 100BASE-TX PHYs, support for 100BASE-FX through an external fiber transceiver, 10/100 Mb/s data rates, and HP Auto-MIDX cabling support. Digital I/O operation also allows selected EtherCAT signals to be controlled or monitored directly by an EtherCAT master. These features make the device suitable for industrial automation equipment where EtherCAT connectivity must coexist with embedded processing. The controller is intended for 1.8 V, 2.5 V, and 3.3 V operation, as identified in the supplied component listings. Its 64-QFN construction supports compact industrial designs, although exposed-pad layout and multilayer PCB construction are important for reliable performance. The I ordering code identifies the industrial-temperature device variant, while the exact ordering suffix, package markings, and absolute maximum ratings must be confirmed in the manufacturer datasheet before release. Typical applications include EtherCAT servo drives, programmable logic controllers, industrial I/O modules, motion-control equipment, and factory-automation controllers. A copper-only installation can use the integrated PHYs directly, while a fiber-based installation can add an external 100BASE-FX transceiver. This page also compares package and ordering variants, records verified sourcing links, and highlights design checks that are not apparent from a distributor category listing alone.
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.
LAN9252T/ML - 2/3-Port EtherCAT Controller | Microchip Technology
The Microchip Technology LAN9252T/ML is a 2/3-port EtherCAT slave controller with dual integrated Ethernet PHYs, supporting full-duplex 100BASE-TX operation at 100 Mbps in a 64-pin QFN package. The controller includes an SPI host interface and supports 100BASE-FX operation through an external fiber transceiver. According to the verified Microchip product information, the LAN9252 family supports HP Auto-MDIX, allowing direct-connect or crossover Ethernet cables without manual cable selection. The LAN9252T/ML is used as an EtherCAT device controller in industrial automation systems where a slave device must exchange cyclic process data with a master controller. Its dual integrated PHYs support Ethernet connectivity within EtherCAT networks, while the SPI interface provides a straightforward connection to a host processor or microcontroller. The T/ML ordering suffix identifies the specific package, temperature, and lead-free configuration; the verified distributor listings identify the device as an Ethernet controller with a 10/100 Base-FX/T/TX PHY, SPI interface, and 64-QFN (9 x 9 mm) package. Key verified characteristics include two integrated Ethernet PHYs, full-duplex 100BASE-TX transceivers, 100 Mbps operation, HP Auto-MDIX support, and external-transceiver-based 100BASE-FX support. These features make the controller appropriate for EtherCAT servo drives, I/O modules, PLC communication interfaces, industrial gateways, and motion-control equipment. The SPI interface also allows the controller to be paired with an embedded microcontroller or application-specific processor for EtherCAT protocol handling. The LAN9252T/ML is not a general-purpose Ethernet switch and is not a memory IC despite one distributor classification. Its primary function is EtherCAT slave-controller operation. The 64-pin QFN footprint requires careful PCB layout, including high-speed differential routing for the Ethernet PHYs, controlled clock distribution, solid ground-plane continuity, and decoupling close to the device pins. Designers should verify the complete pinout, electrical limits, operating-temperature range, and power requirements against the current Microchip datasheet before release to production. This product page summarizes verified manufacturer and distributor information, identifies the available same-package drop-in candidates, and provides practical selection and design guidance without inventing electrical values that were not present in the supplied source data.
LAN9252T/PT - 2/3-Port EtherCAT Controller | Microchip
Microchip LAN9252T/PT is a 2/3-port EtherCAT device controller with dual integrated Ethernet PHYs, each containing a full-duplex 100BASE-TX transceiver operating at 100 Mbps. The device is packaged in a 64-pin TQFP-EP, 10 x 10 mm surface-mount package and provides an SPI interface for host-controller communication. Its integrated Ethernet PHYs support HP Auto-MDIX, allowing direct-connect or crossover Ethernet cables to be used. An EtherCAT device controller, or ESC, is the communications element that connects an EtherCAT slave device to an EtherCAT network. The LAN9252T/PT integrates two Ethernet PHYs and provides the hardware interface required for EtherCAT communication. This integration reduces the number of separate network interface components required in an EtherCAT slave design and provides a defined path between the host processor and the EtherCAT network. The verified product information identifies the LAN9252T/PT as an Ethernet controller with a 10/100BASE-TX PHY, SPI interface, and 64-TQFP-EP package. The two integrated PHYs each support full-duplex 100BASE-TX operation at 100 Mbps. Because the PHYs support HP Auto-MDIX, system integrators can use either straight-through or crossover cables without manually configuring the physical connections. The LAN9252 family is positioned for industrial EtherCAT applications where an embedded system needs a dedicated network controller rather than a general-purpose host Ethernet interface. Relevant application categories include EtherCAT slave devices, industrial automation equipment, motion-control systems, and distributed control equipment. The SPI host interface allows an embedded controller to access the EtherCAT controller functions while the integrated PHYs handle the physical Ethernet layer connections. The TQFP-EP package provides a 64-pin surface-mount footprint and an exposed-pad construction for board-level heat spreading. The exposed pad must be connected to the appropriate ground plane according to the manufacturer land pattern and datasheet recommendations. Designers should preserve the specified placement and routing of Ethernet, power, and signal connections rather than relying on a generic TQFP footprint. For a new EtherCAT slave design, the critical checks are electrical compatibility, EtherCAT conformance, firmware support, package layout, and the exact operating requirements of the selected companion devices. The LAN9252T/PT is identified as a 1.8 V to 3.3 V device in distributor search data. The manufacturer datasheet should be used as the controlling source for pin electrical characteristics, absolute maximum ratings, PHY behavior, clock requirements, and recommended application circuits. This page consolidates the verified manufacturer and distributor information for LAN9252T/PT and provides application, comparison, and design guidance. Because the supplied web data confirms only one distinct same-package replacement candidate, the alternatives list is intentionally not padded with unverified or functionally similar parts that would require a different footprint.
LAN9252TI/ML - 2/3-Port EtherCAT Controller | Microchip
The Microchip Technology LAN9252TI/ML is a 2/3-port EtherCAT slave controller with two integrated 10/100BASE-TX Ethernet PHYs, an SPI host interface, and a 64-QFN 9 x 9 mm package. It supports 100 Mbps full-duplex Ethernet operation, HP Auto-MDIX, and connection to an external fiber transceiver for 100BASE-FX links. An EtherCAT slave controller, or ESC, is a specialized interface semiconductor that combines EtherCAT protocol processing, Ethernet physical-layer functions, and host communication. Within the industrial communication hierarchy, it links an EtherCAT master and slave network to an embedded controller. The ESC belongs to the broader category of Ethernet interface controllers, combining a communication controller, integrated PHYs, and a serial host interface in one package. The principal advantages of the LAN9252TI/ML include its two integrated Ethernet PHYs, support for both copper and external-transceiver fiber connectivity, and a 64-QFN package that supports compact industrial control designs. The 1.8 V, 2.5 V, and 3.3 V operating options support systems using multiple logic-rail levels. HP Auto-MDIX allows direct or crossover cables to be used without manually configuring receive and transmit pairs. Technically, each integrated PHY contains a full-duplex 100BASE-TX transceiver capable of 100 Mbps operation. The SPI interface provides host access to EtherCAT control functions, while the ESC architecture reduces the number of external Ethernet components required by a slave-node design. The 9 x 9 mm QFN format offers a practical footprint for motion-control, robotics, industrial automation, and embedded equipment, although careful decoupling and high-speed layout remain necessary. Typical applications include EtherCAT servo drives, programmable logic controllers, robot controllers, industrial I/O modules, machine vision equipment, and industrial communication gateways. The integrated PHYs are especially useful when a design requires two 100BASE-TX ports and an EtherCAT link to a higher-level master network without using discrete Ethernet transceiver components. Designers should place input and output decoupling capacitors close to their associated supply pins, route Ethernet pairs as controlled-impedance differential pairs, and maintain the separation specified by the LAN9252 datasheet. The external 100BASE-FX arrangement also requires careful review of transceiver interface timing, signal polarity, and isolation requirements when fiber support is required.
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.
LAN9252TV/ML - 2/3-Port EtherCAT Controller | Microchip
The Microchip Technology LAN9252TV/ML is a 2/3-port EtherCAT slave controller with two integrated 100BASE-TX Ethernet PHYs, 100 Mbps operation, an SPI interface, and a 64-QFN 9 x 9 mm package. It combines EtherCAT processing with two full-duplex Ethernet transceivers to provide a compact Ethernet interface for industrial automation equipment. An EtherCAT slave controller, or ESC, is a dedicated semiconductor that manages EtherCAT datagrams and distributed-device communication. The LAN9252 belongs to the broader EtherCAT controller and network-interface IC hierarchy, combining protocol processing, Ethernet physical-layer transceivers, and host-register access in one device. Its two integrated PHYs support copper Ethernet links, while 100BASE-FX operation can be implemented through an external fiber transceiver. Each integrated Ethernet PHY contains a full-duplex 100BASE-TX transceiver capable of 100 Mbps 100BASE-TX operation. HP Auto-MDIX simplifies installation by supporting both direct and crossover LAN cables. The controller also provides the SPI interface identified for this device, allowing a host processor or microcontroller to access its control and status registers. The 64-QFN package supports compact integration into industrial control boards. The 2/3-port architecture is suitable for EtherCAT topologies in which a controller must participate in one or more network segments. Combining the ESC and two Ethernet PHYs reduces the number of separate interface components required on the board. A 100BASE-TX network operating at 100 Mbps is appropriate for cyclic industrial traffic, where deterministic device communication and compact integration are more important than maximum Ethernet line rate. Typical applications include servo drives, programmable logic controllers, industrial robots, machine-tool controllers, distributed I/O modules, and EtherCAT master or slave interface equipment. In these systems, the LAN9252 can connect local EtherCAT processing to copper Ethernet ports, while its register interface allows an embedded controller to configure ports, monitor link status, and exchange process data. Designers should use the manufacturer datasheet pin-description table when assigning PCB nets and should preserve the required Ethernet magnetics, decoupling, and exposed-pad layout. Thermal performance depends on the exposed pad, copper area, airflow, and the device's actual switching loss. Because this controller integrates high-speed digital processing and Ethernet transceivers, controlled-reference layout and uninterrupted ground connectivity are essential for reliable operation. This product page combines the manufacturer's functional description, package and interface data, official datasheet, and application-note migration information with practical comparison and design guidance. It identifies the key distinction between LAN9252-family devices and highlights where package matching alone is insufficient to establish true drop-in compatibility.
LAN9252V/ML - 2/3-Port EtherCAT Controller | Microchip
The Microchip Technology LAN9252V/ML is a 2/3-port EtherCAT slave controller with dual integrated Ethernet PHYs, each containing a full-duplex 100BASE-TX transceiver operating at 100Mbps, in a 64-QFN 9x9 mm package. The device provides a synchronous device SPI/SQI interface for communication with a host microcontroller and supports Digital I/O Mode for signal monitoring and control by an EtherCAT master. Its two integrated PHYs support HP Auto-MDIX, allowing direct-connect or crossover Ethernet cables, while 100BASE-FX can be implemented with an external fiber transceiver. An EtherCAT slave controller is an industrial communication integrated circuit that manages EtherCAT slave-side processing and interfaces a device to an EtherCAT network. The LAN9252 belongs to the broader hierarchy of EtherCAT controller, industrial Ethernet interface, network interface controller, interface IC, and semiconductor. Integrating the Ethernet PHYs with the EtherCAT controller reduces the external component count compared with a discrete PHY implementation and provides a defined interface between the EtherCAT network and the embedded control system. Key verified features include support for two or three EtherCAT ports, two integrated full-duplex 100BASE-TX PHYs, 100Mbps operation, HP Auto-MDIX, a synchronous SPI/SQI host interface, Digital I/O Mode, and support for 100BASE-FX through an external fiber transceiver. The 64-QFN package is identified by the verified distributor listings as a 9x9 mm surface-mount package. The LAN9252V/ML uses two integrated Ethernet PHYs to support copper-based 100BASE-TX links and can also participate in fiber-based networks when the required external transceiver is added. Its architecture is intended for industrial EtherCAT slave equipment in which network connectivity, deterministic EtherCAT processing, and host-controller integration must coexist within a compact embedded design. Typical applications include industrial automation, motion-control equipment, factory I/O modules, robotics, PLC interfaces, and industrial Ethernet gateways. The LAN9252V/ML can connect embedded control electronics to EtherCAT infrastructure through 100BASE-TX while exchanging register and control data with a host MCU over the synchronous SPI/SQI interface. Digital I/O Mode provides an additional mechanism for the EtherCAT master to control or monitor device signals. When designing around the LAN9252V/ML, verify the exact board layout, exposed-pad requirements, clocking, transceiver connections, and Digital I/O signal assignments against the manufacturer datasheet before release. The LAN9252V/ML is not a general-purpose Ethernet switch; its primary role is EtherCAT slave-controller connectivity. For 100BASE-FX implementations, include the external fiber transceiver and its associated isolation, interface, and layout requirements in the system design.