PM8575B-FEI

Overview

The PM8575B-FEI is a PCIe switch integrated circuit manufactured by Microchip Technology, belonging to the Switchtec family. It provides 80 lanes and 40 ports of connectivity. The device supports PCIe Gen3 data rates with a maximum throughput of 145 Gb/s per lane. It operates within an industrial temperature range from -40°C to +105°C. The component is housed in a 1311-pin FCBGA package measuring 37.5x37.5 mm. Power dissipation is rated at 28.7 W. It features SMD/SMT mounting style and includes interfaces such as 2-Wire, GPIO, and UART for management.

Feature Summary

• Provides high-density PCIe switching with 80 lanes and 40 ports
• Supports PCIe Gen3 standard for reliable data transmission
• Includes comprehensive management interfaces including 2-Wire, GPIO, and UART
• Designed for industrial environments with extended temperature operation

Applications

• Fan-out PCIe switching systems
• High-performance computing infrastructure
• Data center interconnect solutions

Procurement Notes

Verify the specific ordering suffix FEI against the official Microchip datasheet to ensure correct package and temperature grade. Confirm that the 1311-FCBGA footprint matches the design requirements. Check for any recent Product Change Notifications (PCN) regarding packaging or material composition updates before finalizing procurement plans.

Selection Notes

Select this component when 80 lanes and 40 ports are required for PCIe Gen3 applications. Ensure the design accommodates the 28.7 W power dissipation and the 1311-FCBGA package dimensions. Verify compatibility with the required management interfaces and confirm that the operating environment falls within the specified -40°C to +105°C range.

Part Context

This part belongs to the Microchip Switchtec PCIe switch family, which offers scalable connectivity solutions. It is distinct from other models like the PM8534B-FEI (64 lanes) and PM8576B-FEI (different port configuration). The PM8575B-FEI specifically targets applications requiring 80 lanes and 40 ports in an industrial temperature range.

Replacement Considerations

Direct substitutes include other Switchtec models with similar lane counts, such as the PM8535B-FEI, though port configurations may differ. Verify pinout and electrical specifications against the datasheet before substitution.