9DB433AGLF

Overview

The Renesas Electronics 9DB433AGLF is a four-output PCIe Gen1/Gen2/Gen3 zero-delay buffer (ZDB) and fanout clock buffer. It operates within a supply voltage range of 3.135 V to 3.465 V, supporting maximum input frequencies up to 166 MHz and maximum output frequencies up to 100 MHz. The device features a propagation delay of 0 ps and maintains a duty cycle of no more than 55%. Designed for surface-mount installation, it is housed in a TSSOP-28 package with an operating temperature range from 0°C to +70°C.

Feature Summary

• Four differential HCSL output pairs designed for PCIe Gen3 compliance while maintaining backward compatibility with Gen2 and Gen1 standards.
• Supports both Zero Delay Buffer mode and Fanout mode, allowing flexible configuration for system clock distribution.
• Low phase jitter performance: less than 1ps rms for PCIe Gen3, less than 3.1ps rms for PCIe Gen2, and less than 86ps peak-to-peak for PCIe Gen1.
• Accepts spread spectrum input signals and supports bandwidth programming for operation between 33MHz and 110MHz in PLL mode.

Applications

• PCI Express Gen3 compliant systems requiring low-jitter clock distribution.
• Backward compatible designs integrating PCIe Gen2 or Gen1 components.
• High-performance computing infrastructure utilizing main clock generators such as the 932S421 or 932SQ420.

Procurement Notes

Verify the specific suffix 'AGLF' against official Renesas documentation to confirm RoHS compliance and lead-free status. Confirm that the TSSOP-28 package variant matches the design requirements, as other suffixes may indicate different packaging or temperature ranges. Ensure the source document explicitly lists this part number as active or available for procurement.

Selection Notes

Select the 9DB433AGLF when a four-channel clock buffer is required for PCIe applications with strict jitter specifications. This component is suitable for designs needing zero-delay buffering capabilities to minimize skew between the reference and output clocks. Verify that the input signal originates from a compatible differential source pair and that the power supply constraints fit within the 3.135V to 3.465V window.

Part Context

The 9DB433AGLF belongs to the 9DB433 series of clock buffers manufactured by Renesas Electronics. It is functionally related to other models in the family, such as the 9DB833 which provides eight outputs, and the 9DB233 which offers two outputs. These components share similar PCIe compatibility features but differ in output count and package configurations.

Replacement Considerations

Publicly confirmed substitute part numbers are not provided in the available data. Designers should consult the official Renesas replacement guide or contact the manufacturer directly for qualified alternatives if this specific part number becomes unavailable.