9DBV0231AKLFT

Overview

The 9DBV0231AKLFT is a PCIe clock buffer and driver manufactured by Renesas Electronics. It operates with a single supply voltage ranging from 1.7V to 1.9V and supports maximum frequencies up to 137.5MHz. The device features one input and four differential outputs, utilizing HCSL signaling for both input and output interfaces. Packaged in a 32-VFQFN (5x5mm) surface-mount enclosure with an exposed pad, it is designed for low-power applications within an operating temperature range of -40°C to 85°C.

Feature Summary

• Four differential HCSL outputs for PCIe clock distribution
• Single-ended HCSL input compatible with standard clock sources
• Integrated PLL for jitter attenuation and frequency multiplication
• Low power consumption optimized for 1.5V to 1.8V core voltage systems

Applications

• PCI Express Gen1/Gen2/Gen3 system clock generation
• Server and workstation motherboard clock distribution
• High-performance networking equipment timing
• Industrial control systems requiring precise clock synchronization

Procurement Notes

Verify the specific suffix 'AKLFT' against the manufacturer's current datasheet to confirm package type, lead finish, and tape-and-reel specifications. Ensure compatibility with the target PCB footprint for the 32-VFQFN package. Check for any recent Product Change Notifications (PCNs) that may affect material composition or manufacturing location.

Selection Notes

Select this component when a zero-delay buffer with four differential outputs is required for PCIe designs. Compare input/output voltage levels and current drive capabilities against other loads on the bus. Consider thermal performance given the small 5x5mm package size and ensure adequate copper area for the exposed pad to maintain reliability within the specified temperature range.

Part Context

This part belongs to the 9DBV series of ultra-low-power PCIe clock buffers. It serves as a fanout buffer to distribute a single reference clock to multiple endpoints while maintaining signal integrity. It is distinct from generators as it typically requires an external crystal or oscillator input rather than generating frequency from scratch without a reference.

Replacement Considerations

Direct pin-to-pin replacements within the same family include the 9DBV0431AKILFT (4 outputs) or 9DBV0641AKLF (6 outputs) if additional channels are needed. Verify electrical parameters such as output swing and drive strength before substituting with non-Renesas equivalents.