PI7C9X2G404ELZXAE

Overview

The PI7C9X2G404ELZXAE is a PCI Express Gen 2 packet switch manufactured by Diodes Incorporated. It features four downstream ports and one upstream port, each supporting four lanes of PCIe 2.0 connectivity. The device operates with a maximum clock frequency of 100 MHz and supports data rates up to 5 Gb/s per lane. Power supply requirements range from 900 mV to 1.1 V, with a typical operating voltage of 1 V. The component functions within an ambient temperature range of -40°C to +85°C. It utilizes an aQFN-136 surface-mount package and exhibits a propagation delay of 6.5 ns. Maximum power dissipation is rated at 650 mW.

Feature Summary

• Supports PCIe 2.0 protocol with four downstream ports and one upstream port
• Integrates physical layer circuitry for receiver detection and signal equalization
• Includes transaction layer receive and transmit blocks for TLP decapsulation and encapsulation
• Provides routing capabilities with support for TC/VC mapping and queue management

Applications

• PCIe expansion chassis interconnects
• Storage area network (SAN) switches
• High-performance computing server backplanes

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and reel specifications. Confirm RoHS compliance status through the manufacturer's current product compliance reports. Ensure that the procurement channel is authorized to maintain warranty validity and access accurate technical support resources.

Selection Notes

Select this component when a compact solution for expanding PCIe connectivity is required. The aQFN-136 package offers a small footprint suitable for space-constrained designs. Verify that the system power budget accommodates the specified 650 mW dissipation limit and that the PCB layout supports the thermal requirements of the selected package.

Part Context

This part belongs to the PI7C9X2G404 family of Extreme Low Packet Switches. Variants in this series differ primarily in packaging options, such as LQFP or other QFN configurations, and manufacturing revisions. The ELZXAE designation specifically identifies the aQFN-136 package variant distributed in tray format.

Replacement Considerations

The PI7C9X2G404EVAZXAEX serves as a related alternative within the same family, offering similar switching functionality but configured with three downstream ports instead of four.