9DBU0841AKILF

Overview

The Renesas 9DBU0841AKILF is a PCI Express (PCIe) zero-delay clock buffer IC designed for high-speed digital systems. It features a single HCSL differential input and provides eight LP-HCSL differential outputs, achieving a 1:8 fan-out ratio. The device operates at a maximum frequency of 200MHz with a supply voltage range of 1.425V to 1.575V. Packaged in a 32-VFQFPN (5x5mm) surface-mount housing with an exposed pad, it supports operation across a temperature range of -40°C to +85°C. This component integrates PLL functionality to ensure low-jitter clock distribution compliant with PCIe specifications.

Feature Summary

• PCIe Zero-Delay Buffer: Provides 1:8 differential fan-out from HCSL input to LP-HCSL outputs.
• High Frequency Operation: Supports clock frequencies up to 200MHz.
• Low Voltage Supply: Operates on a single 1.5V supply (1.425V ~ 1.575V).
• Integrated PLL: Includes phase-locked loop circuitry for jitter attenuation.

Applications

• PCI Express (PCIe) clock distribution networks.
• Server and storage system motherboard clocking.
• High-performance computing hardware requiring low-jitter timing.

Procurement Notes

Verify the specific suffix 'AKILF' against current manufacturer documentation to confirm package type and tape/reel specifications. As this component belongs to the 9DBU series, cross-reference the datasheet for any recent Product Change Notices (PCNs) regarding assembly sites or material composition updates. Ensure compatibility with existing PCB footprints for the 32-VFQFPN package before procurement.

Selection Notes

Select the 9DBU0841AKILF when an eight-channel differential clock output is required from a single source within a PCIe architecture. The choice depends on the need for LP-HCSL output swing levels and the 1.5V operating voltage constraint. Compare against other members of the 9DBU family if different output counts or input/output logic families are needed. Verify that the 200MHz maximum frequency meets the system's timing requirements.

Part Context

This part is a member of the Renesas 9DBU series, which specializes in low-voltage, low-power PCIe clock buffers. The '08' in the model number typically denotes the eight-output configuration, while 'U' indicates the specific voltage and logic family characteristics. It serves as a critical timing element in signal integrity management for high-speed serial interfaces.

Replacement Considerations

Check for direct pin-to-pin replacements within the 9DBU series, such as variants with different output counts or packaging options. Consult the official Renesas replacement guide for end-of-life notifications or recommended upgrades to newer generations of PCIe clock generators and buffers.

FAQ

What is the input and output logic family of the 9DBU0841AKILF?

The device accepts a differential HCSL input and provides eight differential LP-HCSL outputs.

Does the 9DBU0841AKILF include a PLL?

Yes, the component includes an integrated Phase-Locked Loop (PLL) for clock generation and jitter reduction.

What is the maximum operating frequency?

The maximum operating frequency is 200MHz.