9ZX21903AKLF

Overview

The Renesas Electronics Corporation 9ZX21903AKLF is an application-specific clock management integrated circuit designed for high-performance server and storage systems. It operates within a supply voltage range of 3.135 V to 3.465 V and supports maximum input and output frequencies up to 400 MHz. The device features a single circuit with differential clock input and multiple HCSL outputs, packaged in a 72-lead VFQFPN (10x10) surface-mount package. It functions within an operating temperature range of 0°C to +70°C and includes internal phase-locked loop capabilities for precise timing generation.

Feature Summary

• Supports Intel QPI and PCI Express (PCIe) clock distribution requirements
• Provides differential-to-differential clock signal conversion
• Integrates phase-locked loop functionality for jitter attenuation
• Delivers low-skew, multi-output clock signals via HCSL interface

Applications

• Intel QuickPath Interconnect (QPI) clock buffering
• PCI Express (PCIe) root complex and switch clock distribution
• High-performance server motherboard timing solutions
• Storage area network (SAN) controller clock management

Procurement Notes

Verify the specific suffix 'AKLF' against official Renesas documentation to confirm package type, tape-and-reel quantity, and moisture sensitivity level. Ensure compatibility with RoHS3 standards and check for any recent Product Change Notifications regarding assembly sites or material composition updates before finalizing procurement orders.

Selection Notes

Select this component when designing systems requiring dedicated clock management for Intel QPI and PCIe interfaces. Consider the 72-VFQFPN package constraints and 400 MHz frequency limit. Evaluate power consumption at 407 mA and thermal dissipation needs within the 0°C to +70°C operational range compared to alternative buffer devices.

Part Context

The 9ZX21903AKLF belongs to the 9ZX21901 series of clock buffers manufactured by Renesas Electronics. This family targets enterprise computing infrastructure, providing robust timing solutions for processors and peripheral interconnects. It complements other Renesas timing products like the RZ/A microprocessors in complete system designs.

Replacement Considerations

Public confirmed substitute part numbers include 9ZX21901BKLFT and ICS9ZX21901BKLFT. Verify pinout compatibility and electrical specifications before substitution.