LAN9354T/ML

Controllers Overview

The LAN9354T/ML is a 3-port managed Ethernet switch IC from Microchip Technology, housed in a 56-pin QFN package. It supports 10BASE-T and 100BASE-TX standards with integrated PHYs featuring HP Auto-MDIX. The device operates on a single 3.3V supply via an internal 1.2V regulator, with I/O voltages ranging from 1.8V to 3.3V. Key specifications include 32K buffer RAM, a 512-entry forwarding table, and support for IEEE 802.1Q VLANs and 802.1D Spanning Tree. It features an integrated IEEE 1588v2 hardware timestamp unit, Wake-on-LAN capabilities, and interfaces including I2C, SMI, and RMII.

Controllers Feature Summary

• Integrated IEEE 1588v2 hardware timestamp unit supporting boundary and transparent clock modes
• High-performance switch fabric with dynamic QoS queues and programmable rate limiting
• Comprehensive power management with multiple power-down levels and Wake-on-LAN triggers
• Flexible port configuration allowing Port 0 to operate in either MAC or PHY mode via RMII

Controllers Applications

• Cable, satellite, and IP set-top boxes
• Digital televisions and video recorders
• VoIP and video phone systems
• Home gateways
• Test and measurement equipment

Controllers Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to ensure correct temperature range and packaging options. Confirm that the required voltage levels and interface configurations match the system design requirements before finalizing procurement. Check for any recent product change notifications regarding pinout or electrical characteristics.

Controllers Selection Notes

Select this component when a managed switch with integrated PHYs and precise timing synchronization is required. Ensure the application utilizes the available 32K buffer RAM and 512 MAC address entries. Verify that the host system can support the necessary I2C or SMI management interfaces and that the single 3.3V power supply constraint fits the board design.

Controllers Part Context

The LAN9354 belongs to Microchip's family of 10/100 managed Ethernet switches. It is designed for embedded applications requiring high performance and cost control. The device integrates the switch fabric, buffer manager, MACs, and PHYs into a single chip, simplifying the design of complex networking nodes compared to discrete solutions.

Controllers Replacement Considerations

Consult the official datasheet for confirmed substitute part numbers within the same product family. Ensure any replacement maintains compatibility with the 56-QFN package and supports the required IEEE 802.3 and 802.1Q protocols.