LAN9250T/ML - 10/100 Ethernet Controller | Microchip Technology
料号： LAN9250T/ML ✓ 量产中LAN9250T/ML 概述
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.
直接替换替代料： LAN9250T/ML ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： LAN9250T/ML （相同外形与封装尺寸） ——差异在于 Product Type, Package, Ethernet Speed, Host Interface.
LAN9250V/ML
✅ 直接替换 ⚠️ 规格未核验联系询价
查看数据手册 →LAN9250TI/ML
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
LAN9250T/ML 规格参数
| Product Type | 10/100 Base-T/TX Ethernet controller |
| Ethernet Speed | 10/100 Mb/s |
| Integrated PHY | Yes, 10/100 Base-T/TX PHY |
| Host Interface Options | 8/16-bit, SPI, or SQI |
| DigiKey Interface Description | I2C and SPI |
| 封装 | 64-QFN, 9 x 9 mm |
| 安装类型 | Surface mount |
| Optical Fiber Support | Supported |
| Time Synchronization | IEEE 1588 |
| Power Management | Low-power mode |
| Wake-Up Function | Supported |
| Power-On Reset | Supported |
| LED Indication | Programmable |
LAN9250T/ML 64-qfn, 9 x 9 mm 引脚配置指南
LAN9250T/ML（64-qfn, 9 x 9 mm 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： LAN9250T/ML.
请参阅 数据手册 以查看完整引脚配置。
典型应用
LAN9250T/ML 适用于 6 应用s: Embedded Industrial Ethernet, Networked Sensors and IoT Gateways, Programmable Logic Controller, Precision Timing Network Node, Networked Audio and Video Equipment, Optical Network Equipment.
Embedded Industrial Ethernet
The LAN9250T/ML fits embedded industrial Ethernet equipment because it combines a 10/100 Base-T/TX controller and PHY with 8/16-bit, SPI, or SQI host connectivity in a 64-QFN 9 x 9 mm package. The verified feature set includes IEEE 1588 support, low-power operation, wake-up, reset, and programmable LED indication. A controller can sit between an industrial processor and an Ethernet transformer or approved optical interface. The design team should verify operating-temperature limits, timing, media-interface components, and driver support before release.
推荐
Networked Sensors and IoT Gateways
The LAN9250T/ML is suitable for a compact gateway that must convert local sensor or actuator data into 10/100 Ethernet traffic. Its selectable parallel, SPI, or SQI host interface allows integration with different embedded processors, while the integrated 10/100 Base-T/TX PHY reduces the external component count compared with a separated MAC and PHY design. Low-power mode and wake-up can support systems that are not continuously active. Firmware, clocking, reset behavior, and environmental ratings must be validated against the manufacturer documentation.
推荐
Programmable Logic Controller
The LAN9250T/ML can provide a dedicated 10/100 Ethernet endpoint for a programmable logic controller or compact automation controller. Its host interface choices allow the network subsystem to operate beside a real-time processor without requiring the processor to implement the Ethernet PHY itself. Programmable LED indication supports local link and activity diagnostics, while wake-up and low-power modes may assist duty-cycled operation. The implementation must confirm controller operating limits, bus timing, reset sequencing, and the required industrial qualification.
推荐
Precision Timing Network Node
The LAN9250T/ML is relevant to network equipment requiring IEEE 1588-related functionality because IEEE 1588 support is included in the verified feature set. The controller can serve a processor-based timing node with a 10/100 Ethernet connection and a host bus selected to match the processor architecture. Engineers should confirm the supported timing mode, timestamping accuracy, clock source, and interoperability profile in the manufacturer documentation. PCB implementation must preserve clock and Ethernet signal integrity.
推荐
Networked Audio and Video Equipment
The LAN9250T/ML can act as the management or control network interface in professional audio, video, and test equipment that also uses Ethernet for synchronization or configuration. Its 10/100 Mb/s performance is suitable for control traffic and device management, while the integrated PHY reduces board space in space-constrained 64-QFN designs. The low-power and wake-up features can assist standby behavior. Exact host throughput, buffering, interrupt behavior, and media-interface implementation should be verified before selecting it for a particular product architecture.
推荐
Optical Network Equipment
The LAN9250T/ML is a candidate for optical-network equipment because the verified LCSC listing explicitly identifies optical-fiber support alongside its 10/100 controller and PHY functions. A host processor can use the parallel, SPI, or SQI interface while the controller manages Ethernet traffic and programmable LED status indication. The design must still define the exact optical transceiver or media-conversion path, signal levels, timing budget, and isolation requirements. Confirm those details in the manufacturer datasheet because the supplied records do not specify a particular optical module interface.
推荐
推荐产品汇总
工程参考数据： LAN9250T/ML ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | LAN9250V/ML | LAN9250TI/ML |
|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-QFN (9 x 9 mm) | 64-QFN (9 x 9 mm) | 64-QFN (9 x 9 mm) |
| Ethernet Speed | 10/100 Mb/s | 10/100 Mb/s | 10/100 Mb/s |
| Integrated PHY | 10/100 Base-T/TX PHY | 10/100 Base-T/TX PHY | 10/100 Base-T/TX PHY |
关键差异点
- Integrated 10/100 controller and PHY （对比 LAN9250V/ML)
- Flexible embedded host connectivity （对比 LAN9250TI/ML)
- Timing and power-management feature integration （对比 LAN9250V/ML)
设计说明
Create the footprint from the official LAN9250 64-QFN 9 x 9 mm package drawing rather than inferring it from the distributor title. Confirm pin numbering, pad dimensions, solder-mask clearance, and the exposed-pad geometry. Place decoupling capacitors close to their assigned supply pins and provide a low-impedance ground connection to the exposed pad. The supplied records establish the package size and pin count but do not expose the land pattern.
Separate Ethernet media signals from clocks, SPI or SQI activity, switching-power nodes, and sensitive analog inputs. Use the manufacturer reference layout for the selected external media interface, and verify return paths and reference planes continuously. If the board supports optical conversion, keep the optical-device differential path away from clocks and processor buses. Complete signal-integrity and impedance validation on the final stack-up.
The selected 8/16-bit, SPI, or SQI mode determines the host timing budget and clocking architecture. Validate setup and hold timing with the exact processor, cable, switching, and configuration used in production. Do not assume that the abbreviated interface descriptions establish identical timing across ordering codes. Review the manufacturer datasheet for required clock sources, reset sequencing, interrupt behavior, and supported bus configurations.
A common design mistake is treating a package-compatible LAN9250 ordering code as an automatic functional substitute. Before using LAN9250V/ML or LAN9250TI/ML, compare the ordering-code table, supply voltage, temperature grade, clock options, strap pins, and exposed-pad requirements. Also check the manufacturer errata because the datasheet notice states that minor operational differences and recommended workarounds may exist for current devices.
Plan the Ethernet controller supply rails with sufficient startup margin and account for the inrush and load behavior of any external magnetics or media interface. Use the manufacturer-recommended capacitance and ESR characteristics, and validate sequencing against the host processor. The supplied records do not expose operating or absolute-maximum voltage values, so those must be obtained from the official datasheet before the schematic or power tree is released.
合规信息
The supplied manufacturer and distributor records do not explicitly state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. IEEE 1588 is identified as a supported feature, but that protocol reference is not a material-compliance declaration.
