Datasheet > 843256AGILF

843256AGILF

更新时间： 2024-02-25 19:18:51

品牌	Logo	应用领域
艾迪悌 - IDT		/
页数	文件大小	规格书
13页	222K
描述
Clock Generator

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技术参数
数据手册

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843256AGILF 技术参数

是否Rohs认证：	符合	生命周期：	Obsolete
包装说明：	,	Reach Compliance Code：	compliant
风险等级：	5.84	Base Number Matches：	1

843256AGILF 数据手册

PRELIMINARY

ICS843256I

Integrated

Circuit

Systems, Inc.

FEMTOCLOCKS™ CRYSTAL-TO-3.3V LVPECL

FREQUENCY SYNTHESIZER W/INTEGRATED FANOUT BUFFER

GENERAL DESCRIPTION

FEATURES

The ICS843256I is a Crystal-to-3.3V LVPECL • Six LVPECL outputs

ICS

HiPerClockS™

Clock Synthesizer/Fanout Buffer designed for

• Crystal oscillator interface

Fibre Channel and Gigabit Ethernet applications

and is a member of the HiperClockS™ family of

High Performance Clock Solutions from ICS.The

• Output frequency range: 53.125MHz to 333.3333MHz

• Crystal input frequency range: 25MHz to 33.333MHz

output frequency can be set using the frequency select

pins and a 25MHz crystal for Ethernet frequencies, or a

19.44MHz crystal for SONET. The low phase noise charac-

teristics of the ICS843256I make it an ideal clock for these

demanding applications.

• RMS phase jitter at 125MHz, using a 25MHz crystal

(1.875MHz to 20MHz): 0.33ps (typical)

• Full 3.3V or 3.3V core, 2.5V output supply mode

• -40°C to 85°C ambient operating temperature

• Available in both standard and lead-free RoHS-compliant

packages

SELECT FUNCTION TABLE

Inputs

Function

FB_SEL N_SEL1 N_SEL0 M Divide N Divide

M/N

12.5

6.25

BLOCK DIAGRAM

PIN ASSIGNMENT

VCCO

nQ3

nQ2

nQ0

nQ1

nQ0

nQ4

nQ5

N_SEL1

V^EE

Pullup

PLL_BYPASS

nQ1

Output

Divider

PLL_BYPASS

V^CCA

VEE

XTAL_IN

OSC

PLL

N_SEL0

XTAL_OUT

XTAL_IN

VCC

FB_SEL

XTAL_OUT

nQ2

ICS843256I

24-Lead, 300-MIL SOIC

7.5mm x 15.33mm x 2.3mm

body package

Feedback

Divider

nQ3

M Package

Top View

Pulldown

Pullup

FB_SEL

N_SEL1

nQ4

24-Lead TSSOP

4.40mm x 7.8mm x 0.92mm

body package

Pullup

N_SEL0

G Package

Top View

nQ5

The Preliminary Information presented herein represents a product in prototyping or pre-production. The noted characteristics are based on

initial product characterization. Integrated Circuit Systems, Incorporated (ICS) reserves the right to change any circuitry or specifications

without notice.

843256AMI

www.icst.com/products/hiperclocks.html

REV.A JUNE 16, 2006

12 3 4 5 6 7...13

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