Datasheet > ICS843242

ICS843242

更新时间： 2024-11-03 05:12:19

品牌	Logo	应用领域
艾迪悌 - IDT		/
页数	文件大小	规格书
16页	280K
描述
FEMTOCLOCKS⑩ CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER

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中文翻译

获取价格

数据手册

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ICS843242 数据手册

PRELIMINARY

FEMTOCLOCKS™ CRYSTAL-TO-3.3V

LVPECL FREQUENCY SYNTHESIZER

ICS843242

GENERAL DESCRIPTION

FEATURES

• Two 3.3V differential LVPECL output pairs

The ICS843242 is a 2 differential output LVPECL

Synthesizer designed to generate Ethernet

ICS

HiPerClockS™

• Using a 31.25MHz or 26.041666 crystal, the two output

banks can be independently set for 625MHz, 312.5MHz,

156.25MHz or 125MHz

reference clock frequencies and is a member of the

HiPerClocks™ family of high performance clock

solutions from IDT. Using a 31.25MHz or

26.041666MHz, 18pF parallel resonant crystal, the follow-ing

frequencies can be generated based on the settings of

4 frequency select pins (SEL[A1:A0], SEL[B1:B0]): 625MHz,

312.5MHz, 156.25MHz, and 125MHz.

• Crystal oscillator interface

• VCO range: 560MHz to 700MHz

• RMS phase jitter @ 625MHz (1.875MHz - 20MHz):

0.4ps (typical)

The two banks have their own dedicated frequency select pins

and can be independently set for the frequencies mentioned

above. The ICS843242 IDT’s 3 generation low phase noise

VCO technology and can achieve 1ps or lower typical rms

phase jitter, easily meeting Ethernet jitter requirements. The

ICS843242 is packaged in a small 16-pin TSSOP package.

• Full 3.3V supply mode

• 0°C to 70°C ambient operating temperature

• Industrial temperature available upon request

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

compliant packages

BLOCK DIAGRAM

PIN ASSIGNMENT

0=Pullup

1=Pulldown

SELA[0:1}

nQB

XTAL_IN

XTAL_OUT

V^EE

SELA1

SELA0

V^CC

0 0 ÷1

0 1 ÷2 (default)

1 0 ÷4

V^CCO_B

SELB1

SELB2

V^CCO_A

nQA

XTAL_IN

1 1 ÷5

Phase

Detector

VCO

OSC

560MHz - 700MHz

0 0 ÷1

0 1 ÷2

1 0 ÷4 (default)

1 1 ÷5

XTAL_OUT

VCCA

FB_SEL

nQB

nQA

Feedback Divider

0 = ÷20 (default)

1 = ÷24

ICS843242

16-Lead TSSOP

4.4mm x 5.0mm x 0.92mm

package body

Pulldown

0=Pulldown

1=Pullup

FB_SEL

SELB[0:1}

G Package

Top View

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^™3.3V LVPECL FREQUENCY SYNTHESIZER

ICS843242AG REV. A OCTOBER 2, 2007

12 3 4 5 6 7...16

中文翻译

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与ICS843242相关器件

型号	品牌	获取价格	描述	数据表
ICS843242AG	IDT	获取价格	FEMTOCLOCKS⑩ CRYSTAL-TO-3.3V LVPECL FREQUENCY
ICS843242AGLF	IDT	获取价格	FEMTOCLOCKS⑩ CRYSTAL-TO-3.3V LVPECL FREQUENCY
ICS843242AGLFT	IDT	获取价格	FEMTOCLOCKS⑩ CRYSTAL-TO-3.3V LVPECL FREQUENCY
ICS843242AGT	IDT	获取价格	FEMTOCLOCKS⑩ CRYSTAL-TO-3.3V LVPECL FREQUENCY
ICS843246	ICSI	获取价格	FEMTOCLOCKS? CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER W/INTEGRATED FANOUT BUFFER
ICS843246AG	ICSI	获取价格	FEMTOCLOCKS? CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER W/INTEGRATED FANOUT BUFFER
ICS843246AGI	IDT	获取价格	Clock Generator, 333.33MHz, PDSO24, 4.40 X 7.80 MM, 0.92 MM HEIGHT, MO-153, TSSOP-24
ICS843246AGILF	IDT	获取价格	Clock Generator, 333.33MHz, PDSO24, 4.40 X 7.80 MM, 0.92 MM HEIGHT, ROHS COMPLIANT, MO-153
ICS843246AGIT	IDT	获取价格	Clock Generator, 333.33MHz, PDSO24, 4.40 X 7.80 MM, 0.92 MM HEIGHT, MO-153, TSSOP-24
ICS843246AGLF	ICSI	获取价格	FEMTOCLOCKS? CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER W/INTEGRATED FANOUT BUFFER

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