9DBU0431AKLFT

Overview

The 9DBU0431AKLFT is a PCIe zero-delay clock buffer manufactured by Renesas Electronics. It accepts an HCSL differential input and generates four LP-HCSL differential outputs, providing a 1:4 fan-out ratio. The device supports maximum frequencies up to 167 MHz and operates on a 1.5V supply voltage (1.425V to 1.575V). Packaged in a 32-VFQFPN with exposed pad, it functions within a temperature range of -40°C to 85°C.

Feature Summary

• PCIe Zero-Delay Buffer with 1:4 Fan-Out
• HCSL Input to LP-HCSL Output Conversion
• Maximum Frequency Support of 167 MHz
• 1.5V Supply Voltage Operation

Applications

• PCI Express Gen1/Gen2/Gen3 Clock Distribution
• Server and Storage System Backplanes
• High-Speed Interface Clocking

Procurement Notes

Verify the package marking and date code against the manufacturer's latest datasheet to ensure authenticity. Confirm that the specific suffix matches the required tape-and-reel packaging format for automated assembly processes.

Selection Notes

Select this component when a low-skew, zero-delay buffer is required for PCIe architectures. Ensure the design utilizes a 1.5V power rail and accommodates the 32-VFQFPN footprint. Verify thermal management requirements for the exposed pad under continuous operation at maximum frequency.

Part Context

This part belongs to the 9DBU series of PCIe clock buffers. It complements other variants like the 9DBU0231 (2-output) and 9DBU0631 (6-output) to provide scalable clock distribution solutions for different lane counts in high-speed serial link applications.

Replacement Considerations

Direct pin-to-pin replacements within the same family include the 9DBU0231AKILFT for reduced output count or the 9DBU0631AKILFT for increased fan-out. Verify electrical compatibility before substitution.