9DB403DFILFT

Overview

The Renesas Electronics Corporation 9DB403DFILFT is a PCI Express (PCIe) fanout buffer and zero-delay clock distribution IC. It features a single HCSL differential input that drives four differential outputs in an HCSL or LVDS configuration. The device operates with a maximum frequency of 400 MHz and requires a supply voltage between 3.135 V and 3.465 V. Packaged in a 28-SSOP housing, it supports PCIe Gen1 and Gen2 standards. The component includes an internal PLL for jitter attenuation and maintains a propagation delay of 0 ps to ensure signal integrity across the bus.

Feature Summary

• Supports 1:4 input-to-output ratio for PCIe clock distribution
• Accepts HCSL differential input and provides HCSL/LVDS differential outputs
• Operates at frequencies up to 400 MHz with 0 ps propagation delay
• Integrated PLL for clock signal conditioning and jitter reduction

Applications

• PCI Express Gen1 and Gen2 system clock distribution
• Zero-delay buffering for high-speed digital interfaces
• Clock fanout in server and storage motherboard architectures

Procurement Notes

Verify the suffix 'ILFT' corresponds to the industrial temperature range (-40°C to +85°C) and tape-and-reel packaging format. Confirm RoHS3 compliance status as per the latest manufacturer documentation. Ensure the 28-SSOP footprint matches the target PCB layout dimensions before finalizing procurement orders.

Selection Notes

Select this model when a single differential HCSL source must drive four distinct loads with minimal skew. The 28-SSOP package is suitable for applications requiring a compact surface-mount solution. Verify that the load requirements align with the specified HCSL or LVDS output capabilities and that the 3.3V nominal supply voltage is stable within the 3.135V to 3.465V operating window.

Part Context

This component belongs to the 9DB403 series of PCIe clock buffers manufactured by Renesas Electronics. It serves as a critical timing element in systems requiring precise clock synchronization. The part is functionally related to variants such as 9DB403DGILFT, which utilizes a TSSOP package instead of SSOP, while maintaining identical electrical performance characteristics.

Replacement Considerations

The 9DB403DGILFT is a verified alternative offering identical electrical specifications but housed in a 28-TSSOP package. Designers must verify mechanical compatibility and reflow soldering profiles due to the difference between SSOP and TSSOP footprints.