ICS844256

更新时间： 2024-11-06 04:58:15

品牌	Logo	应用领域
艾迪悌 - IDT		/
页数	文件大小	规格书
16页	379K
描述
FEMTOCLOCKS⑩ CRYSTAL-TO-LVDS FREQUENCY SYNTHESIZER W/INTEGRATED FANOUT BUFFER

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ICS844256 数据手册

PRELIMINARY

FEMTOCLOCKS™ CRYSTAL-TO-LVDS

FREQUENCY SYNTHESIZER W/INTEGRATED FANOUT BUFFER

ICS844256

GENERAL DESCRIPTION

FEATURES

The ICS844256 is a Crystal-to-LVDS Clock

• Six LVDS outputs

ICS

HiPerClockS™

Synthesizer/Fanout Buffer designed for SONET

and Gigabit Ethernet applications and is a

member of the HiperClockS™ family of High

Performance Clock Solutions from IDT. The

• Crystal oscillator interface

• 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 character-

istics 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

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

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

nQ2

nQ3

nQ0

Pullup

PLL_BYPASS

nQ1

nQ0

nQ4

nQ5

N_SEL1

GND

nQ1

Output

Divider

XTAL_IN

PLL_BYPASS

V^DDA

GND

OSC

PLL

N_SEL0

XTAL_OUT

XTAL_IN

XTAL_OUT

VDD

FB_SEL

nQ2

ICS844256

24-Lead TSSOP, E-Pad

4.40mm x 7.8mm x 0.90mm

body package

Feedback

Divider

nQ3

Pulldown

FB_SEL

G Package

Top View

Pullup

nQ4

N_SEL1

Pullup

N_SEL0

nQ5

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^™LVDS FREQUENCY SYNTHESIZER W/FANOUT BUFFER

ICS844256BG REV. B NOVEMBER 19, 2007

12 3 4 5 6 7...16

中文翻译

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与ICS844256相关器件

型号	品牌	获取价格	描述	数据表
ICS844256AG	IDT	获取价格	Clock Generator, 622.08MHz, PDSO24, 4.40 X 7.80 MM, 0.92 MM HEIGHT, MO-153, TSSOP-24
ICS844256AG	ICSI	获取价格	FEMTOCLOCKS⑩ CRYSTAL-TO-LVDS FREQUENCY SYNTHE
ICS844256AGLF	ICSI	获取价格	FEMTOCLOCKS⑩ CRYSTAL-TO-LVDS FREQUENCY SYNTHE
ICS844256AGLF	IDT	获取价格	Clock Generator, 622.08MHz, PDSO24, 4.40 X 7.80 MM, 0.92 MM HEIGHT, ROHS COMPLIANT, MO-153
ICS844256AGLFT	ICSI	获取价格	FEMTOCLOCKS⑩ CRYSTAL-TO-LVDS FREQUENCY SYNTHE
ICS844256AGLFT	IDT	获取价格	Clock Generator, 622.08MHz, PDSO24, 4.40 X 7.80 MM, 0.92 MM HEIGHT, ROHS COMPLIANT, MO-153
ICS844256AGT	ICSI	获取价格	FEMTOCLOCKS⑩ CRYSTAL-TO-LVDS FREQUENCY SYNTHE
ICS844256AGT	IDT	获取价格	Clock Generator, 622.08MHz, PDSO24, 4.40 X 7.80 MM, 0.92 MM HEIGHT, MO-153, TSSOP-24
ICS844256AM	ICSI	获取价格	FEMTOCLOCKS⑩ CRYSTAL-TO-LVDS FREQUENCY SYNTHE
ICS844256AMLF	ICSI	获取价格	FEMTOCLOCKS⑩ CRYSTAL-TO-LVDS FREQUENCY SYNTHE

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