9DB233 datasheet(1/18 Pages) RENESAS

No. de pieza	9DB233

Descripción Electrónicos	TWO OUTPUT DIFFERENTIAL BUFFER FOR PCIE GEN3

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DATASHEET

TWO OUTPUT DIFFERENTIAL BUFFER FOR PCIE GEN3

9DB233

IDT®

TWO OUTPUT DIFFERENTIAL BUFFER FOR PCIE GEN3

1

9DB233

OCTOBER 20, 2016

Description

The 9DB233 zero-delay buffer supports PCIe Gen3

requirements, while being backwards compatible to PCIe

Gen2 and Gen1. The 9DB233 is driven by a differential

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

equivalent main clock generator. It attenuates jitter on the

input clock and has a selectable PLL bandwidth to

maximize performance in systems with or without

Spread-Spectrum clocking. An SMBus interface allows

control of the PLL bandwidth and bypass options, while 2

clock request (OE#) pins make the 9DB233 suitable for

Express Card applications.

Recommended Application

2 output PCIe Gen3 zero-delay/fanout buffer

Output Features

• 2 - 0.7V current mode differential HCSL output pairs

Features/Benefits

• OE# pins; suitable for Express Card applications

• PLL or bypass mode; PLL can dejitter incoming clock

• Selectable PLL bandwidth; minimizes jitter peaking in

downstream PLL's

• Spread Spectrum Compatible; tracks spreading input

clock for low EMI

• SMBus Interface; allows control of PLL BW and Mode

Key Specifications

• Cycle-to-cycle jitter < 50 ps

• Output-to-output skew < 50 ps

• PCIe Gen3 phase jitter < 1.0ps RMS

Block Diagram

SPREAD

COMPATIBLE

PLL

CONTROL

LOGIC

SMBDAT

SMBCLK

SRC_IN

SRC_IN#

PLL_BW

IREF

DIF_0

DIF_1

OE1#

OE0#

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Renesas Technology Corp	9DB233	376Kb / 18P	TWO OUTPUT DIFFERENTIAL BUFFER FOR PCIE GEN3 OCTOBER 20, 2016
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9DB233 Datasheet(PDF) 1 Page - Renesas Technology Corp

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