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9DB403DFLF

REN9DB403DFLF

Renesas Electronics Corporation
PCI Express (PCIe) Fanout Buffer (Distribution), Zero Delay Buffer IC 400MHz 1 Output 28-SSOP
Active2,077 in stock
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Overview

The 9DB403DFLF is a four-output PCI Express (PCIe) fanout buffer designed to provide zero-delay clock distribution for high-speed serial interconnects. It supports PCIe Gen1, Gen2, and Gen3 requirements with HCSL-compatible differential inputs and outputs, operating at frequencies up to 400MHz.

Why Choose This Part

This buffer features a built-in PLL that can be bypassed for pure fanout mode, offering flexibility in timing architectures. Its HCSL and LVDS output compatibility ensures easy interfacing with modern FPGAs and processors, while the SMBus interface allows for real-time configuration of output enables and PLL settings.

Applications

PCIe Clock Distribution
Distributing a reference clock to multiple PCIe slots or chips in a server or workstation motherboard.
High-Speed Storage Systems
Providing synchronized clock signals for NVMe-based storage arrays and RAID controllers.
Embedded Computing
Managing clock fanout for industrial PCs utilizing multiple peripheral expansion cards.
Networking Equipment
Clock buffering for high-speed network switches and routers that utilize PCIe backplanes.

Key Specifications

PLL Yes
Input HCSL
Output HCSL, LVDS
Main Purpose PCI Express (PCIe)
Mounting Type Surface Mount
Package / Case 28-SSOP (0.209", 5.30mm Width)
Frequency - Max 400MHz
Voltage - Supply 3.135V ~ 3.465V
Number of Circuits 1
Ratio - Input:Output 1:4
Operating Temperature 0degC ~ 70degC
Supplier Device Package 28-SSOP
Differential - Input:Output Yes/Yes

Getting Started

To implement this device, ensure the 3.3V supply is properly decoupled and the HCSL outputs are terminated with standard 50-ohm resistors to ground. Engineers can configure the device via hardware pins for basic operation or use the SMBus interface to access advanced power management features.

9DB403 Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number Package Stock
9DB403DFLF (this part) SSOP-28 2,077
9DB403DGLFT TSSOP-28 11,678
9DB403DFLFT SSOP-28 234

Also Consider

9DBL0452BKILF RENRenesas Electronics - Provides a lower power consumption profile and supports PCIe Gen1-Gen5 standards.