Description

The 9DB433 zero-delay buffer supports PCIe Gen3

requirements, while being backwards compatible to PCIe

Gen2 and Gen1. The 9DB433 is driven by a differential

SRC output pair from an IDT 932S421 or 932SQ420 or

equivalent main clock generator.

Features

• 3 selectable SMBus addresses; multiple devices can

share the same SMBus segment

• OE# pins; suitable for Express Card applications

• PLL or bypass mode; PLL can dejitter incoming clock

• Selectable PLL bandwidth; minimizes jitter peaking in

downstream PLLs

• Spread spectrum compatible; tracks spreading input

clock for low EMI

• SMBus interface; unused outputs can be disabled

• Supports undriven differential outputs in Power Down

mode for power management