Datasheet > 微控制器和处理器 > 时钟发生器> ICS841664I

ICS841664I

更新时间： 2024-11-02 05:39:03

品牌	Logo	应用领域
艾迪悌 - IDT		时钟发生器
页数	文件大小	规格书
16页	307K
描述
FEMTOCLOCK™ CRYSTAL-TO-HCSL CLOCK GENERATOR

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中文翻译

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数据手册

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ICS841664I 数据手册

PRELIMINARY

FEMTOCLOCK™ CRYSTAL-TO-HCSL

CLOCK GENERATOR

ICS841664I

GENERAL DESCRIPTION

FEATURES

The ICS841664I is an optimized sRIO clock

• Four differential HCSL clock outputs: configurable for sRIO

(125MHz or 156.25MHz) clock signals

ICS

HiPerClockS™

generator and member of the HiPerClocks™ family

One REF_OUT LVCMOS/LVTTL clock output

of high-performance clock solutions from IDT.

The device uses a 25MHz parallel crystal to gen-

erate 125MHz and 156.25MHz clock signals,

• Selectable crystal oscillator interface, 25MHz, 18pF parallel

resonant crystal or LVCMOS/LVTTL single-ended reference

clock input

replacing solutions requiring multiple oscillator and fanout buffer

solutions. The device has excellent phase jitter (< 1ps rms) suit-

able to clock components requiring precise and low-jitter sRIO

clock signals. Designed for telecom, networking and industrial

applications, the ICS841664I can also drive the high-speed

sRIO SerDes clock inputs of communication processors, DSPs,

switches and bridges.

• Supports the following output frequencies:

125MHz or 156.25MHz

• VCO: 625MHz

• PLL bypass and output enable

• RMS phase jitter, using a 25MHz crystal (1.875MHz - 20MHz):

0.35ps (typical) @ 125MHz

• Full 3.3V power supply mode

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

• Available in both standard (RoHS 5) and lead-free (RoHS 6)

packages

BLOCK DIAGRAM

PIN ASSIGNMENT

XTAL_IN

VDD

REF_OUT

GND

IREF

QA0

OSC

FSEL0

FSEL1

QB0

nQA0

XTAL_OUT

REF_IN

FemtoClock

QA0

PLL

÷NA

Pulldown

VCO = 625MHz

QA1

nQA0

V^DDOA

GND

QA1

nQB0

V^DDOB

GND

QB1

nQB1

MR/nOE

nQA1

REF_SEL

IREF

nQA1

nREF_OE

BYPASS

REF_IN

REF_SEL

M = ÷25

QB0

V^DD

nQB0

XTAL_IN

XTAL_OUT

GND

÷NB

QB1

Pulldown

BYPASS

V^DDA

nQB1

FSEL[0:1]

ICS841664I

28-Lead TSSOP

6.1mm x 9.7mm x 0.925mm

package body

MR/nOE

REF_OUT

G Package

Top View

Pullup

nREF_OE

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

and/or qualification.Integrated DeviceTechnology, Incorporated (IDT) reserves the right to change any circuitry or specifications without notice.

IDT^™/ ICS^™HCSL CLOCK GENERATOR

ICS841664AGI REV. A JANUARY 30, 2009

12 3 4 5 6 7...16

中文翻译

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与ICS841664I相关器件

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ICS841N254I	IDT	获取价格	FEMTOCLOCK? NG Crystal-to-LVDS/HCSL Clock Synthesizer
ICS841S01	IDT	获取价格	PCI EXPRESS⑩ CLOCK GENERATOR
ICS841S012DI	IDT	获取价格	Crystal-to-0.7V Differential HCSL/LVCMOS Frequency Synthesizer
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ICS841S01BG	IDT	获取价格	PCI EXPRESS⑩ CLOCK GENERATOR
ICS841S01BGI	IDT	获取价格	暂无描述
ICS841S01BGILF	IDT	获取价格	Processor Specific Clock Generator, 100MHz, PDSO16, 4.40 X 5 MM, 0.92 MM HEIGHT, ROHS COMP
ICS841S01BGILFT	IDT	获取价格	Processor Specific Clock Generator, 100MHz, PDSO16, 4.40 X 5 MM, 0.92 MM HEIGHT, ROHS COMP
ICS841S01BGIT	IDT	获取价格	Processor Specific Clock Generator, 100MHz, PDSO16, 4.40 X 5 MM, 0.92 MM HEIGHT, MO-153, T
ICS841S01BGLF	IDT	获取价格	PCI EXPRESS⑩ CLOCK GENERATOR

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