9DBL411AKLF

Overview

The Renesas 9DBL411AKLF is a CPU and PCI Express fanout buffer IC designed for specific clock distribution applications. It features a single input to four output configuration with differential signaling on both input and output sides. The device operates at a maximum frequency of 400MHz and accepts HCSL input signals. It requires a supply voltage between 3.135V and 3.465V. The component is housed in a 20-VFQFN package with exposed pad, measuring 4x4mm, and supports surface mount installation. It is rated for an operating temperature range of 0°C to 70°C.

Feature Summary

• Four-output differential buffer with 1:4 input-to-output ratio
• Maximum operating frequency of 400MHz
• HCSL input interface with differential output signaling
• Supply voltage range of 3.135V to 3.465V

Applications

• CPU clock distribution
• PCI Express (PCIe) system timing

Procurement Notes

Verify the current lifecycle status as the product is listed as obsolete. Confirm availability through authorized distributors or secondary market sources. Check for RoHS3 compliance and MSL level 1 classification during sourcing. Ensure the 20-VFQFN package dimensions match the design requirements.

Selection Notes

Select this component when a 400MHz PCIe fanout buffer is required. Compare against the 9DBL411BKLFT if lower power consumption or Intel QPI support is needed, noting the frequency difference. Ensure the design accommodates the 3.3V nominal supply voltage and HCSL input requirements.

Part Context

This part belongs to the 9DBL411 family of low-power PCIe fanout buffers from Renesas. It serves as a clock distribution solution for high-speed serial interfaces. The 'A' suffix typically denotes specific binning or revision within the series, distinct from variants like the BKLF which may offer different electrical characteristics or packaging options.

Replacement Considerations

The 9DBL411BKLF is identified as a manufacturer-recommended alternative. Verify pin compatibility and electrical parameter differences before substitution.