9DML0451AKILFT

Overview

The 9DML0451AKILFT is a 3.3V PCIe Gen 1–7 clock multiplexer manufactured by Renesas Electronics. It supports Common Clocked (CC), Separate Reference no Spread (SRnS), and Separate Reference Independent Spread (SRIS) architectures. The device features two differential HCSL inputs and four differential LP-HCSL outputs with a frequency range of 1 MHz to 200 MHz. It offers selectable asynchronous or glitch-free switching modes and includes integrated output termination resistors for direct connection to 85Ω or 100Ω transmission lines, eliminating the need for external components.

Feature Summary

• Supports PCIe Gen 1–7 CC, SRnS, and SRIS clocking architectures
• Selectable asynchronous or glitch-free switching modes
• Integrated output termination for 85Ω or 100Ω transmission lines
• Spread spectrum tolerant input capability

Applications

• PCIe switch and retimer clock distribution
• High-speed server and storage backplanes
• Network infrastructure equipment

Part Context

This component belongs to the 9DML04 family of PCIe clock multiplexers. It is designed to manage clock signals in complex PCIe topologies, providing flexibility in switching between multiple reference clocks while maintaining signal integrity across various PCIe generations.

Replacement Considerations

Verify pinout compatibility and electrical specifications against existing designs. Ensure the replacement supports the required PCIe generation and switching mode (asynchronous vs. glitch-free). Confirm that the integrated termination resistance matches the target impedance (85Ω or 100Ω).