Datasheet > 840245IAGILFT

840245IAGILFT

更新时间： 2024-02-12 07:44:52

品牌	Logo	应用领域
艾迪悌 - IDT		/
页数	文件大小	规格书
11页	187K
描述
Clock Generator

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技术参数
数据手册

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840245IAGILFT 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

840245IAGILFT 数据手册

PRELIMINARY

ICS840245I

Integrated

Circuit

Systems, Inc.

FEMTOCLOCKS™ 1:5, CRYSTAL-TO-

LVCMOS/LVTTL FREQUENCY SYNTHESIZER

GENERAL DESCRIPTION

FEATURES

• Five LVCMOS outputs, 15Ω typical output impedance

• Crystal oscillator interface

The ICS840245I is a low skew, 1-to-5 LVCMOS/

ICS

LVTTL SATA/SAS Clock Generator and is a

member of the HiPerClocks^TMfamily of high

performance clock solutions from ICS. The

ICS840245I can synthesize 75MHz reference

HiPerClockS™

• Supports the following output frequency: 75MHz

• Output skew: 45ps (typical)

clock frequencies with a 25MHz crystal. Each of the 5 outputs

on the ICS840245I can drive two series terminated 50Ω

transmission lines, effectively making the ICS840245I a 1-to-10

clock generator. An output enable (OE) pin, which controls

only the Q4 output, allows the application to use Q4 as an

optional output (for example, test output pin).The ICS840245I

uses ICS’ 3^rdgeneration low phase noise VCO technology

and can achieve 1ps or lower typical random rms phase

jitter.The ICS840245I is packaged in a 16-pin TSSOP package.

• RMS phase jitter @ 75MHz (900kHz - 7.5MHz):

0.454ps (typical)

• Output supply modes:

Core/Output

3.3V/3.3V

3.3V/2.5V

2.5V/2.5V

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

• Available in both standard and lead-free RoHS compliant

packages

BLOCK DIAGRAM

PIN ASSIGNMENT

Pullup

XTAL_OUT

XTAL_IN

V^DDA

V^DD

GND

PLL_SEL

GND

V^DDO

GND

PLL_SEL

25MHz

XTAL_IN

Phase

Detector

VCO

600MHz

OSC

N = 8

V^DDO

XTAL_OUT

M = 24

(fixed)

ICS840245I

16-LeadTSSOP

4.4mm x 5.0mm x 0.92mm

package body

Pullup

G Package

Top View

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.

840245AGI

www.icst.com/products/hiperclocks.html

REV.A APRIL 28, 2006

12 3 4 5 6 7...11

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