9DBU0631AKLFT

Overview

The Renesas 9DBU0631AKLFT is a PCI Express zero-delay buffer and fanout clock distribution IC. It accepts an HCSL differential input and provides six LP-HCSL differential outputs with a 1:6 ratio. The device operates at a maximum frequency of 167 MHz within a supply voltage range of 1.425 V to 1.575 V. Packaged in a 40-VFQFPN (5x5 mm) format, it supports an industrial temperature range from -40°C to 85°C. This component integrates PLL functionality for jitter attenuation while maintaining low power consumption suitable for high-speed digital systems.

Feature Summary

• PCIe Zero-Delay Buffer: Eliminates input-to-output delay using internal PLL feedback.
• Signal Compatibility: Accepts HCSL inputs and generates LP-HCSL outputs to reduce board space and power.
• High Frequency Support: Operates up to 167 MHz for PCIe Gen1/2/3 applications.
• Low Power Design: Typical power consumption of 35 mW in PLL mode with programmable slew rates.

Applications

• PCI Express (PCIe) Gen1, Gen2, and Gen3 clock distribution networks.
• High-performance computing systems requiring low-jitter clocking.
• Server and storage infrastructure timing solutions.

Procurement Notes

Verify the suffix 'AKLFT' against official Renesas documentation to confirm package type, tape-and-reel packaging, and lead-free compliance status. Ensure the specific revision matches design requirements as manufacturing processes may update over time.

Selection Notes

Select this model when a 1:6 fanout ratio with zero-delay buffering is required for PCIe interfaces. Compare against the 9DBU0231AKILFT if only two outputs are needed, or the 9DBU0441AKILFT for four outputs. Confirm that the LP-HCSL output swing meets the receiver specifications of the target devices.

Part Context

This part belongs to the Renesas IDT 9DBU0631 family of ultra-low-power PCIe clock buffers. It serves as a direct replacement for legacy IDT parts with similar pinouts and electrical characteristics, facilitating migration in existing designs without significant layout changes.

Replacement Considerations

The 9DBU0631AKLF is a tray-packaged variant of the same core device. Verify if the reel packaging of the AKLFT version is required for automated assembly processes compared to the manual loading of tray packages.