PM8535B-FEI

Specialized Overview

The PM8535B-FEI is a PCIe switch integrated circuit manufactured by Microchip Technology, belonging to the Switchtec Gen 3 series. It supports 80 lanes and provides 40 ports for high-bandwidth data routing. The device operates within a temperature range of -40°C to +105°C and utilizes an FCBGA-1311 package suitable for surface mount installation. It features interfaces including 2-Wire, GPIO, JTAG, and UART for configuration and control. The component has a power dissipation rating of 22.1 W and is classified as a humidity-sensitive device requiring appropriate handling during assembly.

Specialized Feature Summary

• Supports PCIe Gen 3 standard with 80 lanes and 40 ports for scalable connectivity
• Includes management interfaces such as JTAG, UART, and GPIO for system integration
• Designed for industrial operating temperatures ranging from -40°C to +105°C

Specialized Applications

• High-performance computing systems requiring extensive PCIe expansion
• Data center infrastructure with dense interconnect requirements
• Industrial automation controllers needing robust interface switching

Specialized Procurement Notes

Verify the specific ordering suffix against official Microchip documentation to ensure correct package and temperature grade. Confirm RoHS compliance status through current datasheets or environmental reports before procurement. Check for moisture sensitivity level (MSL) requirements to determine storage and reflow soldering constraints. Ensure compatibility with existing board design regarding the FCBGA-1311 footprint and pinout definitions.

Specialized Selection Notes

Select this component when 80 lanes and 40 ports are required for PCIe Gen 3 architectures. Compare against the PM8534B-FEI if fewer lanes are sufficient, noting the difference in port count. Consider the FCBGA-1311 package size for PCB layout constraints. Verify thermal management capabilities given the 22.1 W power dissipation specification under load conditions.

Specialized Part Context

This part belongs to the Microchip Switchtec family of PCIe switches. It complements other models like the PM8534B-FEI which offers 64 lanes and 32 ports. The series provides scalable solutions for enterprise and industrial applications requiring reliable PCIe fabric expansion.

Specialized Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult Microchip engineering support for qualified alternatives if this component is obsolete or unavailable.