9FGL0451AKILFT

Overview

The 9FGL0451AKILFT is a clock generator integrated circuit manufactured by Renesas Electronics, designed for PCI Express applications. It features an internal Phase-Locked Loop (PLL) and accepts crystal or clock inputs to generate outputs in HCSL and LVCMOS formats. The device operates within a supply voltage range of 3.135V to 3.465V and supports a maximum output frequency of 100MHz. It is housed in a 24-VFQFN package with exposed pads, suitable for surface mount installation, and functions reliably across a temperature range of -40°C to +85°C.

Feature Summary

• Integrated PLL for low-jitter clock generation compliant with PCIe standards
• Supports HCSL and LVCMOS output signaling formats
• Operates on a single 3.3V power supply (3.135V–3.465V)
• Available in a compact 24-QFN (4x4 mm) surface-mount package

Applications

• PCI Express clock generation for host bridges and switches
• System clock distribution in server and storage platforms
• High-speed digital interface timing synchronization

Procurement Notes

Verify the specific suffix 'AKILFT' against official Renesas documentation to confirm package type, tape-and-reel quantity, and RoHS compliance status. Ensure the ordering code matches the exact pinout and electrical specifications required for the target design, as suffix variations may indicate different packaging or material compositions.

Selection Notes

Select this component when a single-output PCIe clock generator with HCSL/LVCMOS options is required. Confirm that the input frequency range and output load requirements align with the system's crystal oscillator and trace impedance. Verify thermal performance within the specified -40°C to +85°C ambient range for the chosen PCB layout.

Part Context

This part belongs to the 9FGL0451 family of PCIe clock generators from Renesas. It shares architectural similarities with other members like the 9FGL0451BKILF and 9FGL0451CKILFT, differing primarily in output count, package style, or termination characteristics. It serves as a specialized timing solution for high-speed serial link interfaces.

Replacement Considerations

Direct substitutes include other variants within the 9FGL0451 series such as the 9FGL0451BKILF or 9FGL0451CKILFT, provided pin compatibility and output drive strengths match the design requirements. Cross-reference datasheets for any differences in output impedance or spread spectrum capabilities.