9EX21801AKILF

Overview

The 9EX21801AKILF is a PCI Express fanout buffer and clock distribution integrated circuit manufactured by Renesas Electronics Corporation. Designed for high-speed signal integrity, this device accepts a single differential input and provides multiple buffered outputs to drive downstream components in PCIe architectures. It operates within a supply voltage range of 1.7V to 1.9V and supports maximum frequencies up to 200MHz. The component is housed in a 72-pin VFQFN package with exposed pads, suitable for surface-mount assembly.

Feature Summary

• Functions as a dedicated fanout buffer and clock distribution solution for PCI Express systems
• Converts single-ended or differential inputs into multiple low-skew output signals
• Optimized for high-speed data transmission with low jitter performance characteristics

Applications

• PCI Express clock distribution networks
• High-speed peripheral interface buffering
• Server and workstation motherboard clocking

Procurement Notes

Verify the exact suffix against official Renesas documentation to confirm package type and temperature grade. Ensure compatibility with existing PCB layout constraints regarding the 72-VFQFN footprint. Confirm that the specific revision matches system requirements before procurement.

Selection Notes

Select this component when a single PCIe reference clock requires distribution to multiple endpoints. Evaluate power consumption and thermal dissipation capabilities relative to the board design. Consider the operating temperature range and supply voltage stability to ensure reliable signal integrity across all operational conditions.

Part Context

This part belongs to the Renesas family of high-speed clock buffers and distribution ICs. These devices are engineered to maintain signal quality in complex digital systems where precise timing is critical. The 9EX series specifically targets applications requiring robust clock generation and distribution for modern interface standards.

Replacement Considerations

Consult official Renesas substitution lists for verified equivalents. Generic cross-references may not match electrical specifications or pin configurations.