Datasheet > ICS844256AMLFT

ICS844256AMLFT

更新时间： 2024-09-16 04:58:15

品牌	Logo	应用领域
矽成 - ICSI		晶体外围集成电路光电二极管时钟
页数	文件大小	规格书
13页	211K
描述
FEMTOCLOCKS⑩ CRYSTAL-TO-LVDS FREQUENCY SYNTHESIZER W/INTEGRATED FANOUT BUFFER

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ICS844256AMLFT 数据手册

PRELIMINARY

ICS844256

Integrated

Circuit

Systems, Inc.

FEMTOCLOCKS™ C RYSTAL-TO-LVDS

FREQUENCY SYNTHESIZER W/INTEGRATED FANOUT BUFFER

GENERAL DESCRIPTION

FEATURES

The ICS844256 is a Crystal-to-LVDS Clock • Six LVDS outputs

ICS

HiPerClockS™

Synthesizer/Fanout Buffer designed for SONET

• Crystal oscillator interface

and Gigabit Ethernet applications and is a

member of the HiperClockS™ family of High

Performance Clock Solutions from ICS. The

• Output frequency range: 62.5MHz to 622.08MHz

• Crystal input frequency range: 15.625MHz to 25.5MHz

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 ICS844256 make it an ideal clock for these

demanding applications.

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

(1.875MHz to 20MHz): 0.48ps (typical)

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

• 0°C to 70°C ambient operating temperature

• Industrial temperature information available upon request

• 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

VDDO

nQ3

nQ4

nQ5

N_SEL1

GND

nQ2

nQ1

nQ0

Pullup

PLL_BYPASS

nQ1

Output

Divider

PLL_BYPASS

V^DDA

GND

XTAL_IN

OSC

PLL

N_SEL0

XTAL_OUT

XTAL_IN

VDD

FB_SEL

XTAL_OUT

nQ2

ICS844256

24-Lead, 300-MIL SOIC

7.5mm x 15.33mm x 2.3mm

body package

Feedback

Divider

nQ3

M Package

TopView

Pulldown

Pullup

FB_SEL

N_SEL1

nQ4

24-LeadTSSOP

4.40mm x 7.8mm x 0.92mm

body package

Pullup

N_SEL0

G Package

TopView

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.

844256AM

www.icst.com/products/hiperclocks.html

REV.A NOVEMBER 29, 2005

12 3 4 5 6 7...13

中文翻译

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与ICS844256AMLFT相关器件

型号	品牌	获取价格	描述	数据表
ICS844256AMT	ICSI	获取价格	FEMTOCLOCKS⑩ CRYSTAL-TO-LVDS FREQUENCY SYNTHE
ICS844256BG	IDT	获取价格	FEMTOCLOCKS⑩ CRYSTAL-TO-LVDS FREQUENCY SYNTHE
ICS844256BGI	IDT	获取价格	暂无描述
ICS844256BGILF	IDT	获取价格	Clock Generator, 625MHz, PDSO24, 4.40 X 7.80 MM, 0.90 MM HEIGHT, ROHS COMPLIANT, MO-153, T
ICS844256BGILFT	IDT	获取价格	Clock Generator, 625MHz, PDSO24, 4.40 X 7.80 MM, 0.90 MM HEIGHT, ROHS COMPLIANT, MO-153, T
ICS844256BGIT	IDT	获取价格	Clock Generator, 625MHz, PDSO24, 4.40 X 7.80 MM, 0.90 MM HEIGHT, MO-153, TSSOP-24
ICS844256BGLF	IDT	获取价格	FEMTOCLOCKS™ CRYSTAL-TO-LVDS FREQUENCY SYNTHE
ICS844256BGLFT	IDT	获取价格	FEMTOCLOCKS⑩ CRYSTAL-TO-LVDS FREQUENCY SYNTHE
ICS844256BGT	IDT	获取价格	FEMTOCLOCKS⑩ CRYSTAL-TO-LVDS FREQUENCY SYNTHE
ICS844256CK-24	IDT	获取价格	Clock Generator, 390.625MHz, PQCC32, 5 X 5 MM, 0.75 MM HEIGHT, MO-220VHHD-2, VFQFN-32

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