9DBU0431AKILFT

Application Specific Clock/Timing Overview

The 9DBU0431AKILFT is a zero-delay buffer and fan-out buffer IC designed for PCI Express (PCIe) applications. Manufactured by Renesas Electronics, it accepts an HCSL input signal and provides LP-HCSL outputs. The device features a 1:6 input-to-output ratio with differential signaling on both input and output sides. It operates within a supply voltage range of 1.425V to 1.575V and supports maximum frequencies up to 167MHz. The component is housed in a 40-VFQFPN package with exposed pads, measuring 5x5 mm, and is rated for industrial temperatures from -40°C to 85°C.

Application Specific Clock/Timing Feature Summary

• Zero-delay buffering architecture optimized for PCIe Gen1-Gen3 standards
• 1:6 fan-out ratio converting single HCSL input to six LP-HCSL differential outputs
• Low power consumption with 1.5V nominal supply voltage operation
• Integrated PLL for low jitter performance in high-speed data transmission

Application Specific Clock/Timing Applications

• PCI Express clock distribution networks
• Server and storage system backplanes
• High-performance computing boards requiring precise clock skew management

Application Specific Clock/Timing Procurement Notes

Verify the specific suffix 'AKILFT' against the official Renesas datasheet to confirm packaging details and RoHS compliance status. Ensure that the ordering information matches the current product lifecycle stage, as availability may vary by region. Cross-reference the manufacturer's part number with authorized distributor catalogs to validate authenticity and traceability before procurement.

Application Specific Clock/Timing Selection Notes

Select this component when a PCIe application requires a single reference clock to drive multiple downstream receivers with minimal skew. The 1:6 output count suits designs needing moderate fan-out without additional external buffering. Verify that the system board layout accommodates the 40-pin VFQFPN package dimensions and thermal requirements for the specified operating temperature range.

Application Specific Clock/Timing Part Context

This device belongs to the 9DBU series of PCIe clock buffers from Renesas. It complements other members like the 9DBU0231 (2-output) and 9DBU0631 (6-output variants with different pinouts). The series addresses the growing demand for low-jitter clocking solutions in next-generation interface standards, ensuring signal integrity across complex motherboard architectures.

Application Specific Clock/Timing Replacement Considerations

Direct replacements include other 9DBU series parts with compatible output counts, such as the 9DBU0631AKILFT, provided the pinout compatibility is verified. Alternative vendors offering PCIe zero-delay buffers with similar HCSL-to-LP-HCSL conversion capabilities may be considered if electrical parameters match exactly.