9FGU0631CKLF

Overview

The Renesas Electronics 9FGU0631CKLF is a six-output clock buffer designed for PCI Express (PCIe) Gen1, Gen2, and Gen3 applications. Operating at a nominal 1.5 V supply voltage, this device functions as a PCIe clock generator with jitter attenuation capabilities. It features LP-HCSL outputs to reduce external component requirements. The component belongs to the 9FGU0631 series within the Clock & Timer ICs category. It is manufactured by Renesas Electronics Corporation and utilizes a surface-mount package configuration suitable for high-density board layouts.

Feature Summary

• Six differential outputs optimized for PCIe Gen1-Gen3 signaling standards
• Integrated jitter attenuation functionality for clean clock distribution
• Low-power 1.5 V operation reducing thermal concerns in dense designs
• LP-HCSL output type minimizing external termination resistor count

Applications

• PCI Express Gen1, Gen2, and Gen3 system clock generation
• High-speed data acquisition systems requiring low-jitter timing
• Server and storage infrastructure clock distribution networks

Procurement Notes

The 9FGU0631CKLF is listed as obsolete or end-of-life by the manufacturer. Availability is restricted, and distributors may not stock this specific part number. Verification of current lifecycle status and alternative sourcing channels is required before procurement planning. Moisture sensitivity level details should be confirmed via the official datasheet prior to handling.

Selection Notes

Select this component when designing for PCIe Gen1 through Gen3 interfaces requiring a single-source clock with jitter cleaning. Ensure the design supports the 1.5 V core voltage and LP-HCSL output swing. Verify that the six-output topology matches the target system's clock tree requirements. Consider the VFQFPN package dimensions for PCB footprint compatibility.

Part Context

This part is a member of the Renesas IDT 1.5 V Ultra-Low-Power PCIe clock family. It shares architectural similarities with other devices in the 9FGU0631 series but is distinguished by its specific output count and packaging variant. The CKLF suffix typically denotes the commercial temperature range and tray packaging format within the product line.

Replacement Considerations

Due to the obsolete status, direct substitutes are limited. Evaluate newer generations from the Renesas PCIe clock portfolio that support equivalent PCIe speeds. Cross-reference pinouts and electrical specifications carefully when considering legacy IDT parts or modern equivalents.