PM8574B-FEI

Overview

The PM8574B-FEI is a Switchtec PCIe switch manufactured by Microchip Technology, designed for high-performance data center and enterprise applications. It features 64 lanes of PCIe Gen3 connectivity distributed across 32 ports, enabling scalable I/O expansion. The device operates within an industrial temperature range of -40°C to +105°C and utilizes a 1311-FCBGA package measuring 37.5x37.5 mm. Key electrical specifications include a maximum power dissipation of 22.1 W and support for multiple interface protocols including 2-Wire, GPIO, JTAG, and UART. The component is moisture sensitive (MSL Level 4) and complies with RoHS3 standards.

Feature Summary

• Supports PCIe Gen3 standard for high-speed data transfer
• Provides extensive port density with 32 downstream ports
• Includes advanced management interfaces for system integration

Applications

• Data center server I/O expansion
• Enterprise storage systems
• High-performance computing clusters

Procurement Notes

Verify the specific ordering suffix and package variant against the official Microchip datasheet before procurement. Confirm that the supplier provides valid traceability documentation and adheres to the manufacturer's humidity sensitivity handling guidelines. Ensure compatibility with the intended PCB layout and thermal design requirements.

Selection Notes

Select this component when a high-port-count PCIe Gen3 switch is required for scalable architectures. Compare lane and port configurations against alternative models in the Switchtec family to ensure optimal resource utilization. Verify that the operating temperature range and power dissipation limits align with the target system's environmental constraints.

Part Context

This part belongs to the Microchip Switchtec family of PCIe switches, which are widely used in infrastructure equipment. It serves as a critical interconnect solution for expanding peripheral connectivity in modern computing systems. The model represents a specific configuration within the broader portfolio of interface ICs offered by the manufacturer.

Replacement Considerations

Consult the official Microchip product selection guide for verified pin-to-pin or functional substitutes. Cross-reference lane counts and port densities with other Switchtec models to ensure architectural compatibility without redesigning the host system.