9DB401CFLFT

Overview

The Renesas Electronics Corporation 9DB401CFLFT is a PCI Express (PCIe) fanout buffer and zero-delay buffer integrated circuit. It features a single input channel providing four differential outputs, operating at a maximum frequency of 400MHz. The device accepts HCSL inputs and generates HCSL or LVDS outputs. It operates within a supply voltage range of 3.135V to 3.465V and supports surface-mount installation in a 28-TSSOP package with dimensions of 0.173 inches (4.40mm) width. The component includes an internal Phase-Locked Loop (PLL) for clock distribution applications.

Feature Summary

• PCI Express Fanout Buffer: Provides 1:4 ratio clock distribution with differential input and output capabilities.
• Zero-Delay Buffer Architecture: Incorporates an internal PLL to minimize jitter and skew in high-speed signal paths.
• Flexible Output Standards: Supports both HCSL and LVDS output formats to accommodate various system requirements.
• Wide Operating Voltage: Designed for operation with a supply voltage between 3.135V and 3.465V.

Applications

• PCI Express (PCIe) Clock Distribution Systems
• High-Speed Computer Motherboards
• Server and Workstation Timing Networks

Procurement Notes

Verify the current lifecycle status of the 9DB401CFLFT before procurement planning, as availability may be limited due to end-of-life transitions. Confirm that the 28-TSSOP package footprint matches the target PCB design. Ensure that the required supply voltage and output standards (HCSL/LVDS) align with the specific application constraints. Check for any pending Product Change Notices (PCNs) regarding assembly sites or material changes.

Selection Notes

Select the 9DB401CFLFT when a PCIe-compliant clock buffer with zero-delay buffering is required for up to four loads. This component is suitable for designs needing conversion from HCSL inputs to either HCSL or LVDS outputs. Consider the 28-TSSOP package size if board space allows; otherwise, evaluate alternative packages such as TSSOP or QFN variants within the same family. Verify thermal performance under continuous 400MHz operation.

Part Context

The 9DB401CFLFT belongs to the 9DB401 series of clock buffers manufactured by Renesas Electronics. It is part of a broader portfolio of timing solutions designed for high-performance computing and communication infrastructure. The 'C' suffix typically denotes specific electrical characteristics or revisions within the base 9DB401 product line. Related components include the 9DB403DFLF and 9DBL411AKLFT, which offer similar functionalities with variations in package type and supported protocols.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Evaluate other members of the 9DB401 series or the 9DBL411 series for potential pin-compatible or functionally equivalent alternatives, subject to verification against official datasheets.