9DB433AGLFT

Overview

The Renesas Electronics 9DB433AGLFT is a PCIe Gen1-2-3 zero delay buffer and fanout clock distribution IC. It features four differential HCSL output pairs with phase jitter performance below 1ps rms for PCIe Gen3, less than 3.1ps rms for Gen2, and under 86ps peak-to-peak for Gen1. The device operates on a single 3.3V supply (3.135V to 3.465V) within an industrial temperature range of -40°C to +85°C. It supports bandwidth programming from 33MHz to 110MHz in PLL mode and 10MHz to 110MHz in bypass mode, housed in a 28-pin TSSOP package.

Feature Summary

• Four differential HCSL output pairs supporting PCIe Gen1, Gen2, and Gen3 standards
• Ultra-low phase jitter: <1ps rms (Gen3), <3.1ps rms (Gen2), <86ps p-p (Gen1)
• Supports Zero Delay Buffer (ZDB) and Fanout modes with bandwidth programming
• Operates at input frequencies up to 166MHz with 3.3V single-supply voltage

Applications

• PCI Express (PCIe) Gen1/Gen2/Gen3 clock distribution networks
• High-speed server and storage system motherboard clocking
• Backplane clock buffering for multi-lane interfaces

Procurement Notes

Verify the suffix 'LF' confirms lead-free compliance and RoHS3 status. Confirm the specific package variant matches the required thermal and mechanical specifications for the target PCB layout. Ensure the operating temperature grade aligns with the application environment requirements.

Selection Notes

Select this component when four low-jitter differential outputs are required for PCIe applications. Compare against the 9DB433AFILF if SSOP packaging is preferred over TSSOP. Verify that the input source provides a differential HCSL signal compatible with the ZDB feedback loop configuration.

Part Context

This part belongs to the 9DB433 family of PCIe clock buffers. It serves as a direct replacement for legacy ICS9DB433 variants. The device is designed to replace discrete buffer solutions by integrating PLL functionality and multiple output drivers into a single compact surface-mount package.

Replacement Considerations

The 9DB433AFILF offers identical electrical performance but utilizes an SSOP-28 package instead of TSSOP-28. Verify pin compatibility and footprint dimensions before substitution.