9ZX21901BKLFT

Overview

The Renesas Electronics 9ZX21901BKLFT is a clock buffer integrated circuit designed for Intel QPI and PCI Express (PCIe) applications. It features one circuit with a 2:19 input-to-output ratio, providing differential HCSL outputs from a differential clock input. The device supports a maximum frequency of 400 MHz and operates on a supply voltage ranging from 3.135 V to 3.465 V. Packaged in a 72-VFQFPN (10x10 mm) exposed pad format, it functions within an operating temperature range of 0°C to +70°C.

Feature Summary

• Supports Intel QPI and PCIe architectures with a 2:19 input-to-output ratio
• Generates differential HCSL output signals from a differential clock input
• Operates at frequencies up to 400 MHz with a 3.135 V to 3.465 V supply range

Applications

• Intel QuickPath Interconnect (QPI) systems
• PCI Express (PCIe) clock distribution networks
• Server platform timing solutions

Procurement Notes

Verify the component status as active before procurement. Confirm that the 72-VFQFPN package dimensions match the design layout. Ensure the supply voltage requirements align with the system's power rails. Check moisture sensitivity level handling procedures during assembly. Validate compatibility with the target Intel QPI or PCIe generation specifications.

Selection Notes

Select this component when a 2:19 fan-out ratio is required for differential HCSL signaling. Ensure the application environment stays within the 0°C to +70°C operating temperature range. Verify that the PCB layout accommodates the 10x10 mm 72-VFQFPN package with an exposed pad. Confirm that the system power supply provides the specified 3.135 V to 3.465 V range.

Part Context

This part belongs to the 9ZX21901 series of clock buffers manufactured by Renesas Electronics. It serves as a specialized timing solution for high-speed data transfer interfaces. The device is distinct from other series members by its specific 2:19 ratio and HCSL output configuration tailored for server-grade platforms.

Replacement Considerations

Check for direct pin-compatible alternatives within the same 9ZX21901 family. Verify if updated revisions offer improved jitter performance or extended temperature ranges. Ensure any substitute maintains the 2:19 ratio and HCSL output signaling standard.