9DBL411AKLFT-INT

Overview

The Renesas 9DBL411AKLFT is a single-circuit, four-output PCIe fanout buffer designed for CPU and PCI Express applications. It accepts an HCSL differential input and provides four LP-HCSL differential outputs with a maximum operating frequency of 400MHz. The device operates on a supply voltage range of 3.135V to 3.465V within an industrial temperature range of 0°C to 70°C. Packaged in a 20-VFQFN (4x4) format with an exposed pad, this component facilitates clock distribution in high-speed digital systems.

Feature Summary

• Four-output differential buffer supporting up to 400MHz operation
• HCSL differential input to LP-HCSL differential output conversion
• Individual Output Enable (OE#) pins for each output channel
• Supports spread spectrum input signals

Applications

• PCI Express (PCIe) clock distribution
• CPU clock fanout buffers

Procurement Notes

This specific part number is listed as obsolete by the manufacturer. Verification of availability should focus on the recommended replacement model 9DBL411BKLFT, which shares the same package and pinout but operates at a lower maximum frequency of 150MHz. Confirm RoHS3 compliance and MSL rating during procurement.

Selection Notes

Select the 9DBL411AKLFT when a 400MHz fanout buffer is required for PCIe or CPU clocking. Ensure the design supports the 3.135V to 3.465V supply voltage. If higher frequencies are not needed, the 9DBL411BKLFT serves as a direct functional substitute with a 150MHz limit.

Part Context

The 9DBL411AKLFT belongs to the 9DBL411 family of low-power differential buffers from Renesas. This series is engineered for high-speed data transmission interfaces, specifically optimizing signal integrity for PCIe standards through precise impedance matching and low jitter performance.

Replacement Considerations

The 9DBL411BKLFT is the confirmed manufacturer-recommended replacement. It maintains the 20-VFQFN package and 1:4 ratio but reduces the maximum frequency specification from 400MHz to 150MHz.