9ZXL1951DNHGI8

Overview

The Renesas 9ZXL1951DNHGI8 is a DB1900ZL OEM derivative low-power clock buffer designed for Intel QPI and PCIe applications. It features one HCSL differential input driving 19 LP-HCSL differential outputs with a 1:19 ratio. The device supports frequencies up to 400 MHz and operates on a 3.135 V to 3.465 V supply. Packaged in an 80-GQFN (6x6 mm) exposed pad, it functions within a -40°C to +85°C temperature range.

Feature Summary

• DB1900ZL OEM derivative 'Lite' version with 6x6 mm footprint
• 19 LP-HCSL differential outputs from single HCSL input
• Supports Intel QPI and PCIe Gen 1-5 standards
• Integrated PLL for jitter reduction

Applications

• Intel QuickPath Interconnect (QPI)
• PCI Express (PCIe) systems
• High-performance computing servers

Part Context

This component belongs to the 9ZXL1951 family of zero-delay/fanout clock buffers. It serves as a pin-compatible upgrade or alternative to standard DB1900ZL implementations, offering reduced board space through its compact 6x6 mm GQFN package while maintaining high-speed signal integrity requirements.

Replacement Considerations

Verify if the 'Lite' designation implies specific performance trade-offs compared to the full DB1900ZL specification. Ensure the 80-GQFN package fits the target PCB layout, as it differs from the 72-VFQFPN used in some related 9ZXL1950 series parts.