9FGL0651CKILF

Overview

The Renesas 9FGL0651CKILF is a PCIe clock generator IC designed for high-speed serial link applications. It operates with a single 3.3V supply and features six differential outputs utilizing LP-HCSL signaling. The device supports input frequencies of 25 MHz or 100 MHz, generating corresponding output clocks compliant with PCIe Gen 1 through Gen 6 standards. It incorporates an internal PLL for jitter attenuation and supports Common Clocked (CC), Separate Reference No Spread (SRNS), and Separate Reference Independent Spread (SRIS) architectures. The component is housed in a compact 24-VFQFPN package measuring 4mm x 4mm.

Feature Summary

• Six differential LP-HCSL outputs supporting PCIe Gen 1–6 compliance
• Supports CC, SRNS, and SRIS clocking architectures
• Integrated spread spectrum capability with SMBus-selectable options
• Dedicated OE# pins on each output for CLKREQ# functionality

Applications

• Servers and High-Performance Computing systems
• NVMe Storage controllers
• Networking Accelerators
• Industrial Control equipment

Procurement Notes

Verify the specific suffix 'CKILF' against official Renesas documentation to confirm package type and tape/reel specifications. Confirm current lifecycle status as distribution data indicates potential end-of-life notifications for this family. Ensure compatibility with required moisture sensitivity levels for surface mount assembly processes.

Selection Notes

Select this model when six synchronized differential clock outputs are required for PCIe expansion slots or connectors. Verify that the system design utilizes a 3.3V power domain. Consider the 24-VFQFPN footprint constraints during PCB layout. Ensure the application requires LP-HCSL signaling rather than LVPECL or LVDS variants found in other Renesas clock buffers.

Part Context

This component belongs to the 9FGL02x1/04x1/06x1/08x1 series of 3.3V PCIe clock generators. The part number structure indicates six outputs ('06') and a 25MHz base frequency option ('51'). It serves as a timing source for multi-lane PCIe interfaces, replacing discrete oscillator solutions to save board space and reduce jitter.

Replacement Considerations

The 9FGL0251CKILFT provides two outputs in the same package. The 9FGL0451CKILFT offers four outputs. For eight outputs, the 9FGL0851CKILFT is the direct family member. Verify pinout compatibility if substituting between different output counts within this series.