9ZXL1951DNHGI

Overview

The Renesas 9ZXL1951DNHGI is a DB1900ZL OEM derivative clock buffer designed for Intel QPI and PCIe applications. It features one differential HCSL input driving 19 differential HCSL outputs within a single circuit. The device supports a maximum frequency of 400 MHz and operates on a supply voltage range of 3.135 V to 3.465 V. It utilizes an 80-GQFN (6x6 mm) package with dual rows and an exposed pad, suitable for surface mount installation across an industrial temperature range of -40°C to +85°C.

Feature Summary

• DB1900ZL OEM derivative providing 1:19 differential HCSL fanout
• Supports frequencies up to 400 MHz for high-speed interface compliance
• Integrated PLL functionality for clock distribution
• Compact 6x6 mm 80-GQFN package footprint

Applications

• Intel QuickPath Interconnect (QPI) systems
• PCI Express (PCIe) clock distribution networks
• High-performance server platforms

Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm exact packaging and moisture sensitivity levels. Confirm availability status directly with authorized distributors as stock levels fluctuate. Ensure the procurement channel provides valid traceability and authenticity guarantees for critical timing components.

Selection Notes

Select this component when a pin-compatible or functionally similar upgrade to the DB1900ZL is required in a compact form factor. The 6x6 mm package offers space savings compared to larger 10mm variants. Ensure the design accommodates the 80-pin GQFN thermal pad requirements for adequate heat dissipation during operation.

Part Context

This part belongs to the Renesas 9ZXL series of zero-delay and fanout buffers. It serves as a specialized OEM derivative tailored for specific Intel platform architectures. The device complements other members like the 9ZXL1950D by offering a distinct package size while maintaining core buffering capabilities for processor and peripheral clocks.

Replacement Considerations

Direct replacements include the 9ZXL1950BKLFT and 9ZXL1950DKILF, though these utilize a larger 72-VFQFPN package. Verify pin compatibility and board space constraints before substituting, as the 80-GQFN footprint differs from the standard 10mm packages found in the broader 9ZXL1950 family.