KSZ8873RLLU-TR

Controllers Overview

The KSZ8873RLLU-TR is a managed 3-port Ethernet switch IC manufactured by Microchip Technology. It integrates two 10/100BASE-TX transceivers and one RMII interface, supporting data rates of 10 Mb/s and 100 Mb/s. The device operates on a single 3.3V supply with an internal 1.8V LDO for the VDDIO domain. It supports full-duplex and half-duplex modes within an operating temperature range of -40°C to +85°C. The component is housed in a 64-pin LQFP package.

Controllers Feature Summary

• Supports IEEE 802.1q VLAN tagging and removal per port
• Includes programmable rate limiting and broadcast storm protection
• Features bypass mode to sustain switching when CPU sleeps
• Provides comprehensive management via SMI, MIIM, SPI, and I2C interfaces

Controllers Applications

• VoIP Phone
• Set-Top/Game Box
• Automotive Ethernet
• Industrial Control
• SOHO Residential Gateway

Controllers Procurement Notes

Verify that the ordering suffix 'LLU' corresponds to the specific industrial temperature grade and lead-free packaging configuration documented in the official datasheet. Confirm compatibility with the 64-pin LQFP footprint during procurement planning.

Controllers Selection Notes

Select this model when an RMII interface is required instead of MII. Ensure the design accommodates the industrial temperature range and single 3.3V power supply requirements specified for the RLL variant.

Controllers Part Context

This part belongs to the KSZ8873 family of integrated 3-port switches. It shares core architecture with the KSZ8873MLL and KSZ8873FLL but differs in its Port 3 interface type, utilizing RMII rather than MII or Fiber.

Controllers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.