9DBL411BKILFT

Overview

The 9DBL411BKILFT is a four-output lower power differential fanout buffer manufactured by Renesas Electronics Corporation. Designed for Intel QPI and PCI Express (PCIe) applications, it accepts HCSL differential inputs and provides LP-HCSL differential outputs. The device operates at a maximum frequency of 150 MHz with a supply voltage range of 3 V to 3.6 V. It features individual output enable pins for each channel and supports spread spectrum input. The component is housed in a 20-VFQFPN package with a 4x4 mm footprint and is rated for an operating temperature range of -40°C to +85°C.

Feature Summary

• Four differential outputs with independent output enable control
• Supports PCIe Gen1-Gen3 and Intel QPI clock distribution
• Converts HCSL input signals to low-power LP-HCSL outputs
• Operates within a 3V to 3.6V supply voltage range

Applications

• PCI Express (PCIe) clock distribution networks
• Intel QuickPath Interconnect (QPI) systems
• High-speed server and storage motherboard designs

Procurement Notes

Verify the specific suffix 'BK' against design requirements, as it denotes the industrial temperature grade (-40°C to +85°C) and VFQFPN package. Confirm RoHS3 compliance status for current production lots. Check manufacturer notices regarding end-of-life or alternative assembly sites, as these factors may impact long-term availability and sourcing strategies.

Selection Notes

Select this component when a 1:4 fanout ratio is required for PCIe or QPI interfaces. Ensure the system design accommodates the 20-VFQFPN surface-mount package dimensions. Verify that the input clock source matches the HCSL specification and that the downstream loads are compatible with LP-HCSL signaling levels to maintain signal integrity.

Part Context

This part belongs to the 9DBL411 family of clock buffers. Variants such as the 9DBL411AKLFT offer commercial temperature ranges, while the 9DBL411BGILFT utilizes a TSSOP package. The BK suffix specifically identifies the industrial grade version with the compact VFQFPN form factor, distinguishing it from other pin-compatible or functionally similar devices in the series.

Replacement Considerations

The 9DBL411BKLFT is listed as a manufacturer-recommended replacement. Verify pinout compatibility and electrical parameter alignment before substitution. Other family members like the 9DBL411AKLFT differ primarily in temperature rating and packaging.