LAN9250TV/ML - 10/100 Ethernet Controller | Microchip Technology
料号： LAN9250TV/ML ✓ 量产中LAN9250TV/ML 概述
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.
直接替换替代料： LAN9250TV/ML ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
该产品暂无直接替换替代料。
请求替代料LAN9250TV/ML 规格参数
| Device Type | 10/100 Base-T/TX Ethernet Controller |
| Ethernet Speed | 10 Mbps and 100 Mbps |
| Integrated PHY | 10/100 Base-T/TX PHY |
| Host Interface | 8-bit or 16-bit SPI/SQI |
| Control Interface | I2C and SPI |
| 工作电源电压 | 1.8 V to 3.3 V |
| Supported Logic Supply | 1.8 V, 2.5 V, and 3.3 V |
| 工作温度 | -40 °C to 105 °C |
| 封装 | 64-VFQFN with exposed pad |
| Package Type | Surface Mount |
| Production Packaging | Tape & Reel |
| Part Status | Active |
| Ethernet Standard | 10/100 Base-T/TX |
| 功能 | Ethernet Controller |
| 安装类型 | Surface Mount |
LAN9250TV/ML surface mount 引脚配置指南
LAN9250TV/ML（surface mount 封装）的引脚配置。 引脚编号、功能和连接图在制造商数据手册中定义。请参阅该手册以了解确切的封装尺寸和焊接指南。
暂无详细引脚数据： LAN9250TV/ML.
请参阅 数据手册 以查看完整引脚配置。
典型应用
LAN9250TV/ML 适用于 6 应用s: Industrial Ethernet Control, Factory Automation Gateway, Programmable Logic Controller, Embedded Instrumentation, Serial-to-Ethernet Communication Module, Connected Sensor Node.
Industrial Ethernet Control
The LAN9250TV/ML fits industrial controllers that need a compact 10/100 Ethernet connection to a supervising SCADA or engineering workstation. Its integrated 10/100 Base-T/TX PHY removes the need for a separate Ethernet transceiver, while the 8/16-bit SPI/SQI host interface allows an embedded processor to manage registers and packet traffic. The 1.8 V to 3.3 V operating range supports common embedded logic levels. For a production design, follow the Microchip reference layout for the 64-VFQFN exposed pad, supply decoupling, magnetics, and differential traces. Add the isolation and surge-protection strategy required by the installation environment rather than relying on the controller alone for industrial fault containment.
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Factory Automation Gateway
The LAN9250TV/ML is suitable for factory gateways that bridge an embedded control platform to a 10/100 Ethernet network. The integrated controller and PHY simplify the physical-layer section, while SPI/SQI permits a processor-oriented host connection for control traffic and status reporting. Its -40 °C to 105 °C operating range supports industrial equipment across extended ambient conditions. The implementation should preserve the manufacturer’s recommended Ethernet trace geometry, place magnetics and termination components according to the reference schematic, and provide a low-impedance path from the exposed thermal pad to the PCB ground plane. Network isolation, surge protection, and enclosure grounding should be designed around the actual cable length and installation class.
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Programmable Logic Controller
LAN9250TV/ML can add Ethernet communications to a programmable logic controller when the controller includes a compatible serial host interface. Its 8/16-bit SPI/SQI architecture supports embedded processor integration, and the integrated 10/100 PHY reduces the external interface count. The device can be paired with isolation, protection, and legacy-fieldbus circuitry in a PLC architecture. Because the controller must coexist with sensitive digital and power domains, follow the manufacturer’s decoupling sequence and keep the Ethernet differential pair away from switching nodes and high-current outputs. Validate reset, initialization, and firmware-controlled interface behavior against the datasheet and errata before production release.
推荐
Embedded Instrumentation
The LAN9250TV/ML provides instrument designers with a single-chip route to 10/100 Ethernet connectivity. The controller and integrated PHY can connect measurement, calibration, and status data from an embedded platform to laboratory or plant networks. Its flexible 1.8 V, 2.5 V, and 3.3 V supply configurations help align with processor and data-converter rails, although each rail must remain within the device’s documented limits. Ethernet magnetics and controlled-impedance routing are essential for reliable cable attachment. Keep switching regulators and high-current return paths away from the differential pair, and use the exposed pad as a deliberate thermal and ground connection rather than leaving it unconnected.
推荐
Serial-to-Ethernet Communication Module
LAN9250TV/ML is appropriate for compact serial-to-Ethernet modules that expose equipment data over a 10/100 network. The processor-side SPI/SQI host interface supports a deterministic embedded architecture, while the integrated PHY reduces module size and assembly complexity. The 1.8 V to 3.3 V operating range supports low-voltage industrial and communications designs. Use the 64-VFQFN exposed pad as both the electrical and thermal connection to the PCB, observe the manufacturer’s recommended capacitor placement, and route the Ethernet pair as a controlled-impedance differential pair. The module should also include its own surge and ESD strategy because the integrated PHY does not replace board-level protection.
推荐
Connected Sensor Node
The LAN9250TV/ML can add wired Ethernet connectivity to a higher-performance sensor node that already has a capable host processor. Rather than using a low-cost microcontroller with limited networking capability, the controller provides integrated 10/100 MAC and PHY functions plus SPI/SQI connectivity. The 1.8 V minimum supply supports integration with suitable low-voltage digital systems, while the -40 °C to 105 °C range addresses many deployed environments. The board should isolate Ethernet routing from sensor analog paths, provide local high-frequency decoupling, and follow the manufacturer’s exposed-pad and magnetics recommendations. If the node also uses wireless links, maintain physical separation between Ethernet, radio, and switching-converter circuitry to control EMI coupling.
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推荐产品汇总
工程参考数据： LAN9250TV/ML ——对比、设计指导和合规信息。
选型指南
Do not select a different LAN9353, KSZ, or LAN87xx device merely because it is also a Fast Ethernet component. These devices can differ in host bus, register architecture, memory organization, pinout, voltage, and package. The /ML suffix also identifies tape-and-reel packaging and should not be treated as a functional upgrade. For a new design, use the LAN9250TV/ML when its SPI/SQI architecture, 64-VFQFN land pattern, and I2C support match the firmware plan. For an existing board, verify the footprint and every electrical and protocol requirement before considering any substitution.
与替代料对比
| 参数 | 本产品 |
|---|---|
| Package | 64-VFQFN with exposed pad |
| Brand | Microchip Technology |
| Device Type | 10/100 Base-T/TX Ethernet Controller |
| Ethernet Speed | 10 Mbps and 100 Mbps |
| Integrated PHY | Yes |
| Host Interface | 8/16-bit SPI/SQI |
| Additional Interface | I2C |
| Operating Supply Voltage | 1.8 V to 3.3 V |
| Operating Temperature | -40 °C to 105 °C |
| Mounting Type | Surface Mount |
关键差异点
- Integrated controller and PHY （对比 A discrete Ethernet MAC plus external PHY design)
- Processor-oriented serial host interface （对比 A parallel host-interface Ethernet controller)
- Broad low-voltage operating range （对比 A fixed 3.3 V Ethernet interface controller)
设计说明
Follow the manufacturer’s reference layout for the 64-VFQFN footprint, including component placement, trace routing, and the exposed-pad connection. Provide the specified local supply decoupling at the power pins and connect the exposed pad to ground through a low-impedance path. Verify the final land pattern against the package drawing because no library key is available for this exact 64-pin exposed-pad package.
Route the Ethernet differential pair as a controlled-impedance pair using the manufacturer’s guidance, and keep the traces short and continuous through the PHY section to the magnetics. Avoid placing vias, test pads, and aggressive right-angle routing in the pair when practical. Keep switching-regulator nodes and high-current return paths away from the Ethernet lines to reduce radiated and susceptibility problems.
Do not assume that every LAN9250 ordering code is a direct substitution for LAN9250TV/ML. Confirm the package pinout, supported host width, electrical limits, temperature rating, and tape-and-reel configuration separately. Also review the manufacturer errata information because the datasheet may describe minor operational differences or recommended workarounds for current devices.
Treat the exposed pad as the principal thermal and electrical path. Use uninterrupted ground-plane copper beneath the device and maintain the manufacturer’s recommended solder-pad geometry and paste pattern. Validate junction temperature and copper temperature rise in the assembled enclosure, particularly when the controller operates beside a switching supply or in a compact industrial enclosure with limited airflow.
合规信息
The manufacturer materials identify the LAN9250TV/ML as active but do not provide explicit RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations.
