9ZXL0851EKILF/W

Overview

The Renesas 9ZXL0851EKILF is an Intel DB800ZL 'Lite' derivative clock buffer designed for high-speed serial interfaces. It features a single differential input and eight differential outputs with a 1:8 ratio. The device operates at frequencies up to 400MHz within a supply voltage range of 3.135V to 3.465V. It utilizes HCSL output signaling and includes an integrated PLL for jitter reduction or bypass mode. The component is housed in a 48-VFQFPN (6x6) package with exposed pads, suitable for surface mount installation across industrial temperature ranges.

Feature Summary

• Supports Intel DB800ZL specification requirements for PCIe and QPI applications
• Integrates a PLL for de-jittering incoming clocks or operates in bypass mode
• Features fixed feedback path for zero-picosecond input-to-output delay stability
• Provides hardware-controlled outputs via dedicated OE pins

Applications

• PCI Express Gen 1/2/3 clock distribution
• Intel QuickPath Interconnect (QPI) systems
• Ultra Path Interconnect (UPI) architectures

Procurement Notes

Verify the exact suffix against official Renesas documentation, as the provided model contains a non-standard '/W' designation not present in standard distributor listings. Confirm current lifecycle status, as this series may be discontinued or subject to specific obsolescence notices. Ensure compatibility with existing PCB footprints and verify that the required packaging format matches available inventory constraints.

Selection Notes

Select this component when designing systems requiring strict adherence to the Intel DB800ZL Lite specification. It is appropriate for applications needing low-power HCSL-compatible outputs with minimal board space consumption. Consider the fixed feedback path requirement for QPI/UPI drift sensitivity. Evaluate the 48-pin VFQFPN package constraints against thermal and routing requirements.

Part Context

This part belongs to the 9ZXL0851E family of low-power clock buffers manufactured by Renesas Electronics. These devices are derivatives of the Intel DB800ZL specification, tailored for PCIe and QPI/UPI applications. The family offers pin-compatible alternatives with varying performance characteristics, serving as critical timing elements in high-speed processor interconnects.

Replacement Considerations

The 9ZXL0831E is documented as a pin-to-pin alternative within the same family offering improved performance and reduced external components.