LAN9250T/PT

Controllers Overview

The LAN9250T/PT is a single-chip 10/100 Ethernet controller and PHY manufactured by Microchip Technology. It integrates an Ethernet MAC, HP Auto-MDIX PHY, and IEEE 1588v2 hardware timestamp unit. The device supports 10BASE-T and 100BASE-TX standards with optional 100BASE-FX via external transceiver. It features an 8/16-bit host bus interface or SPI/SQI client interface, a 16-KByte FIFO, and variable voltage I/O from 1.8V to 3.3V. Powered by a single 3.3V supply with an integrated 1.2V regulator, it operates in the commercial temperature range of 0°C to +70°C within a 64-pin TQFP-EP package.

Controllers Feature Summary

• Integrated Ethernet MAC and PHY with HP Auto-MDIX for automatic polarity detection and correction
• IEEE 1588v2 hardware timestamp unit supporting global tunable clock and programmable events
• Flexible host bus interfaces including indexed register access, multiplexed address/data bus, and SPI/SQI
• Comprehensive power management with Wake on LAN (WoL) and multiple wake event triggers

Controllers Applications

• Cable, satellite, and IP set-top boxes
• Digital televisions and video recorders
• VoIP and video phone systems
• Home gateways
• Industrial automation systems

Controllers Procurement Notes

Verify the specific suffix 'T' against official documentation to confirm packaging details such as reel quantity or tape-and-reel specifications. Ensure the component meets the required commercial temperature range of 0°C to +70°C for your application environment. Confirm RoHS compliance status through the manufacturer's current datasheet revision.

Controllers Selection Notes

Select this component when a low pin count solution is required for embedded 10/100 Ethernet applications. It is suitable for systems needing IEEE 1588v2 precision timing or flexible host connectivity via SPI or parallel bus. Consider the integrated 1.2V regulator for simplified power design using a single 3.3V supply.

Controllers Part Context

The LAN9250 belongs to Microchip's family of industrial Ethernet controllers designed for high performance in 16-bit applications. It combines MAC and PHY functions into a single chip to reduce system cost and board space. The device supports Energy Efficient Ethernet (802.3az) and offers extensive flow control mechanisms to prevent packet loss.

Controllers Replacement Considerations

LAN9250I/ML: Industrial temperature variant in QFN package. LAN9250/ML: Commercial temperature variant in QFN package. LAN9252 series: EtherCAT-specific controllers with different protocol support.