9DB833AFILF datasheet(1/19 Pages) RENESAS

Part #	9DB833AFILF

Description	EIGHT OUTPUT DIFFERENTIAL BUFFER FOR PCIE GEN1–3

PDF	19 Pages

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Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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DATASHEET

EIGHT OUTPUT DIFFERENTIAL BUFFER FOR PCIE GEN1–3

9DB833

IDT®

EIGHT OUTPUT DIFFERENTIAL BUFFER FOR PCIE GEN1–3

1

9DB833

MAY 25, 2018

Description

The 9DB833 zero-delay buffer supports PCIe Gen3

requirements, while being backwards compatible to PCIe

Gen2 and Gen1. The 9DB833 is driven by a differential

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

equivalent main clock generator.

Typical Applications

8 output PCIe Gen1–3 zero delay/fanout buffer

Output Features

• 8 0.7V current-mode differential HCSL output pairs

• Supports zero delay buffer mode and fanout mode

• Selectable bandwidth

• 50–110MHz operation in PLL mode

• 5–166MHz operation in Bypass mode

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

Key Specifications

• Outputs cycle-cycle jitter <50ps

• Output to output skew <50ps

• Phase jitter: PCIe Gen3 <1.0ps rms

Block Diagram

LOCK

STOP

LOGIC

SRC_IN

SRC_IN#

DIF(7:0))

CONTROL

LOGIC

BYP#_LOBW_HIBW

SMBDAT

SMBCLK

PD#

SPREAD

COMPATIBLE

PLL

8

IREF

OE(7:0)#

8

M

U

X

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