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PI6C20800SAEX

DIOPI6C20800SAEX

Diodes Incorporated
PCI Express (PCIe) IC 400MHz 1 Output 48-TSSOP
Active5,532 in stock
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Overview

The PI6C20800SAEX is a high-performance PCI Express (PCIe) clock buffer designed to distribute a single HCSL input to eight differential HCSL outputs. Operating at frequencies up to 400MHz, it includes an integrated PLL that can be configured for zero-delay buffer operation or bypassed for fanout-only mode. It is specifically optimized for high-speed differential signaling in computing and server environments requiring low phase jitter.

Why Choose This Part

This device offers programmable PLL bandwidth and individual output enable control via SMBus, allowing for fine-tuned power management and signal integrity. With support for up to eight differential pairs and a low-power shutdown mode consuming only 12mA, it balances high fanout capability with thermal efficiency in 48-TSSOP packaging.

Applications

Server Motherboards
Distributing reference clocks to multiple PCIe slots and chipset components while maintaining tight skew control.
Network Storage Systems
Providing synchronized high-speed clocking for RAID controllers and NVMe storage arrays.
High-Performance Computing (HPC)
Managing clock distribution for GPU clusters and FPGA-based acceleration cards that require HCSL signaling.

Key Specifications

PLL Yes
Input HCSL
Output HCSL
Main Purpose PCI Express (PCIe)
Mounting Type Surface Mount
Package / Case 48-TFSOP (0.240", 6.10mm Width)
Frequency - Max 400MHz
Voltage - Supply 3.135V ~ 3.465V
Number of Circuits 1
Ratio - Input:Output 1:8
Operating Temperature 0degC ~ 70degC
Supplier Device Package 48-TSSOP
Differential - Input:Output Yes/Yes

Getting Started

To evaluate this part, ensure the SMBus interface is correctly pulled up to VDD (3.135V to 3.465V) for software-based configuration of the PLL and tristate controls. Design the PCB traces for HCSL outputs with 50-ohm characteristic impedance to minimize reflections, and use the OE pins for hardware-level output management during system power sequencing.

PI6C20800 Family

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

Part Number Temp Range Stock
PI6C20800SAEX (this part) 0degC ~ 70degC 5,532
PI6C20800BIAEX -40degC ~ 85degC 6,550
PI6C20800SIAEX -40degC ~ 85degC 959

Also Consider

9DB803DGLFT RENRenesas Electronics - An 8-output PCIe zero-delay buffer often used in similar high-speed clock distribution applications.
Si53108 Skyworks Solutions Inc. - Provides 8-output HCSL clock distribution with a focus on ultra-low additive jitter for PCIe Gen1/2/3/4/5.