9DBU0441AKILF

Overview

The 9DBU0441AKILF is a four-output, 1.5V PCIe zero-delay/fanout clock buffer manufactured by Renesas Electronics. It operates within a supply voltage range of 1.425V to 1.575V and supports maximum output frequencies up to 167MHz. The device utilizes Low-Power HCSL (LP-HCSL) differential outputs and accepts High-Current Schottky Logic (HCSL) differential inputs. Packaged in a 32-VFQFPN with exposed pad, it features integrated 100Ω terminations for direct transmission line connection. Operating temperatures span from -40°C to +85°C.

Feature Summary

• Integrated 100Ω output terminations enable direct connection to 100Ω transmission lines, eliminating external resistors.
• Supports PCIe Gen1/Gen2/Gen3 architectures with spread spectrum input tolerance for EMI reduction.
• Programmable slew rate and output amplitude allow tuning for various line lengths and application environments.
• Includes three selectable SMBus addresses for multi-device configuration without requiring dedicated control pins.

Applications

• PCI Express (PCIe) Gen1, Gen2, and Gen3 system clock distribution
• CPU and chipset clock fanout buffers
• High-speed digital interface timing synchronization

Procurement Notes

Verify the specific suffix 'KILF' against official Renesas documentation to confirm package type, tape-and-reel quantity, and RoHS compliance status. Confirm current lifecycle status as components may be subject to End-of-Life notices or alternative recommendations. Ensure compatibility with existing PCB footprint and thermal requirements before procurement.

Selection Notes

Select this component when a low-power, 1.5V PCIe clock buffer with integrated termination is required. It is suitable for designs needing zero-delay buffering with programmable electrical characteristics. Verify that the input source provides compatible HCSL signals and that the system requires LP-HCSL outputs for downstream logic.

Part Context

This part belongs to the IDT/Renesas 1.5V Ultra-Low-Power (ULP) PCIe family. It is functionally related to other members like the 9DBU0541 and 9DBU0931, differing primarily in output count and specific power management features. The device replaces older 3.3V PCIe clock solutions with lower voltage operation.

Replacement Considerations

The 9DBL411BKLF is listed as a manufacturer-recommended alternative. Verify pinout compatibility and electrical parameter alignment before substitution. Other family members such as the 9DBU0541AKILF offer different output counts and should be evaluated based on specific channel requirements.