9DBU0931AKLFT

Overview

The Renesas 9DBU0931AKLFT is a zero-delay fanout buffer designed for PCI Express (PCIe) applications. It accepts an HCSL input and provides two LP-HCSL outputs with a 1:2 distribution ratio. The device supports maximum frequencies of 167 MHz and operates on a single 1.5V supply voltage ranging from 1.425V to 1.575V. Packaged in a 48-VFQFPN format, it functions within a commercial temperature range of 0°C to +70°C. Key electrical characteristics include a maximum duty cycle distortion of 5% and a typical power consumption of 56mW.

Feature Summary

• Zero-delay architecture ensures minimal propagation delay skew between input and output clocks.
• Supports PCIe Gen1, Gen2, and Gen3 standards with up to 167 MHz operation.
• Converts one HCSL differential input to two LP-HCSL differential outputs.
• Low power consumption of 56mW at 1.5V supply.

Applications

• PCI Express clock distribution networks.
• Server and storage system timing architectures.
• High-speed digital interface clock buffering.

Procurement Notes

Verify the suffix 'AKLFT' against official Renesas documentation to confirm package type, tape-and-reel packaging, and RoHS compliance status. Cross-reference the Mouser part number 972-9DBU0931AKLF for current availability, as some listings indicate end-of-life status or limited stock. Ensure moisture sensitivity level handling procedures are followed during assembly.

Selection Notes

Select this component when a low-skew, dual-output buffer is required for PCIe clock trees. Compare against the 9DBU0941 series if nine outputs are needed instead of two. Verify that the 1.5V operating voltage aligns with the target system's power rails. Confirm that the 48-VFQFPN footprint fits the PCB layout constraints.

Part Context

This part belongs to the Renesas 9DBU series of zero-delay buffers specifically optimized for high-speed serial interfaces like PCIe. It complements other variants such as the 9DBU0231 (2 outputs) and 9DBU0441 (4 outputs) by providing a specific 1:2 fanout solution for differential clock signals in commercial temperature environments.

Replacement Considerations

The 9DBU0931AKLF is listed as End-of-Life in some distributor records. Potential functional equivalents within the same family include the 9DBU0941 series for higher output counts, though pinouts and specifications may differ. Consult Renesas for current lifecycle status and approved alternates.