ICS9DB403D

IDT®

Four Output Differential Buffer for PCIe and Gen 1 and Gen 2

ICS9DB403D

REV R 11/1/12

Four Output Differential Buffer for PCIe Gen 1 and Gen 2

DATASHEET

1

Description

Output Features

The ICS9DB403 is compatible with the Intel DB400v2 Differential

Buffer Specification.This buffer provides 4 PCI-Express Gen2 clocks.

The ICS9DB403 is driven by a differential output pair from a

CK410B+, CK505 or CK509B main clock generator.

•

4 - 0.7V current-mode differential output pairs

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Supports zero delay buffer mode and fanout mode

•

Bandwidth programming available

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50-100 MHz operation in PLL mode

•

50-400 MHz operation in Bypass mode

Functional Block Diagram

Key Specifications

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Outputs cycle-cycle jitter < 50ps

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Outputs skew: 50ps

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Phase jitter: PCIe Gen1 < 86ps peak to peak

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Phase jitter: PCIe Gen2 < 3.0/3.1ps rms

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28-pin SSOP/TSSOP pacakge

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Available in RoHS compliant packaging

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Supports Commercial (0 to +70°C) and Industrial (-40 to

+85°C) temperature ranges

Features/Benefits

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Spread spectrum modulation tolerant, 0 to -0.5% down

spread and +/- 0.25% center spread.

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Supports undriven differential outputs in PD# and

SRC_STOP# modes for power management.

Note: Polarities shown for OE_INV = 0.

STOP

LOGIC

SRC_IN

SRC_IN#

DIF(6,5,2,1)

CONTROL

LOGIC

BYPASS#/PLL

SDATA

SCLK

PD

SPREAD

COMPATIBLE

PLL

4

IREF

OE(6,5,2,1)

4

M

U

X

-OE(6, 1)

2