9DBU0941AKILFT

Overview

The 9DBU0941AKILFT is a PCIe fanout clock buffer manufactured by Renesas Electronics Corporation. It features a single circuit with a 1:9 input-to-output ratio, supporting differential HCSL and LVDS inputs alongside LP-HCSL outputs. The device operates at a maximum frequency of 167MHz within a supply voltage range of 1.425V to 1.575V. Designed for surface mount installation, it is housed in a 48-VFQFPN package with exposed pads (6x6mm). The component functions without an internal PLL and supports operation across a temperature range of 0°C to 70°C.

Feature Summary

• 1:9 differential fanout ratio for PCIe clock distribution
• Supports both HCSL and LVDS input signaling formats
• Operates on low voltage supply (1.425V ~ 1.575V)
• Maximum operating frequency of 167MHz

Applications

• PCI Express (PCIe) system clock distribution
• CPU peripheral clocking architectures
• High-speed digital signal routing buffers

Procurement Notes

Verify the specific suffix 'ILFT' against official Renesas documentation to confirm lead-free status and tape-and-reel packaging specifications. Confirm current product lifecycle status, as timing components frequently undergo obsolescence notices or manufacturing site changes that may affect long-term availability.

Selection Notes

Select this component when a single reference clock must drive nine distinct PCIe endpoints requiring LP-HCSL outputs. Ensure the design accommodates the 1.5V nominal supply voltage and verify that the board layout supports the 48-pin VFQFPN footprint with adequate thermal relief for the exposed pad.

Part Context

This part belongs to the 9DBU series of PCIe clock buffers from Renesas. It serves as a specialized distribution element for high-speed serial interfaces, differing from general-purpose clock generators by focusing on low-jitter fanout capabilities tailored for PCI Express compliance requirements.

Replacement Considerations

Consult the official Renesas cross-reference guide for verified pin-compatible alternatives. Generic clock buffers may not support the specific HCSL/LVDS input flexibility or LP-HCSL output characteristics required for PCIe Gen1-Gen3 compatibility.