Datasheet > 8431AM-21

8431AM-21

更新时间： 2024-01-18 17:45:09

品牌	Logo	应用领域
艾迪悌 - IDT		光电二极管外围集成电路
页数	文件大小	规格书
19页	296K
描述
Clock Generator, CMOS, PDSO28

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中文翻译

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技术参数
数据手册

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8431AM-21 技术参数

是否无铅：	含铅	是否Rohs认证：	不符合
生命周期：	Obsolete	Reach Compliance Code：	not_compliant
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	5.92	JESD-30 代码：	R-PDSO-G28
JESD-609代码：	e0	湿度敏感等级：	1
端子数量：	28	最高工作温度：	85 °C
最低工作温度：		封装主体材料：	PLASTIC/EPOXY
封装代码：	SOP	封装等效代码：	SOP28,.4
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE
峰值回流温度（摄氏度）：	225	电源：	3.3 V
认证状态：	Not Qualified	子类别：	Clock Generators
最大压摆率：	155 mA	标称供电电压：	3.3 V
表面贴装：	YES	技术：	CMOS
温度等级：	OTHER	端子面层：	Tin/Lead (Sn85Pb15)
端子形式：	GULL WING	端子节距：	1.27 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	30
uPs/uCs/外围集成电路类型：	CLOCK GENERATOR, OTHER	Base Number Matches：	1

8431AM-21 数据手册

ICS8431-21

350MHZ, Low Jitter, Crystal Oscillator-to-3.3V

LVPECL Frequency Synthesizer

PRODUCT DISCONTINUATION NOTICE - LAST TIME BUY EXPIRES ON (JULY 26, 2014)

GENERAL DESCRIPTION

FEATURES

• Fully integrated PLL

The ICS8431-21 is a general purpose clock frequency synthe-

sizer for IA64/32 application. The VCO operates at a frequency

range of 250MHz to 700MHz providing an output frequency range

of 62.5MHz to 350MHz.The output frequency can be programmed

using the parallel interface, M0 through M8 to the configuration

logic, and the output divider control pin, DIV_SEL. Spread spec-

trum clocking is programmed via the control inputs SSC_CTL0

and SSC_CTL1.

• Differential 3.3V LVPECL output

• Crystal oscillator interface

• Output frequency range: 62.5MHz to 350MHz

• Crystal input frequency range: 14MHz to 25MHz

• VCO range: 250MHz to 700MHz

Programmable features of the ICS8431-21 support four opera-

tional modes. The four modes are spread spectrum clocking

(SSC), non-spread spectrum clock and two test modes which are

controlled by the SSC_CTL[1:0] pins. Unlike other synthesizers,

the ICS8431-21 can immediately change spread-spectrum op-

eration without having to reset the device.

• Programmable PLL loop divider for generating a variety

of output frequencies

• Spread Spectrum Clocking (SSC) fixed at 1/2% modulation for

environments requiring ultra low EMI

• PLL bypass modes supporting in-circuit testing and on-chip

functional block characterization

In SSC mode, the output clock is modulated in order to achieve a

reduction in EMI. In one of the PLL bypass test modes, the PLL is

disconnected as the source to the differential output allowing an

external source to be connected to the TEST_I/O pin.This is use-

ful for in-circuit testing and allows the differential output to be

driven at a lower frequency throughout the system clock tree. In

the other PLL bypass mode, the oscillator divider is used as the

source to both the M and the Fout divide by 2. This is useful for

characterizing the oscillator and internal dividers.

• Cycle-to-cycle jitter: 30ps (maximum)

• 3.3V supply voltage

• 0°C to 85°C ambient operating temperature

• Replaces ICS8431-01 and ICS8431-11

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

packages

• Use Replacement Part: 84314AY-02LF

BLOCK DIAGRAM

PIN ASSIGNMENT

nP_LOAD

XTAL_IN

OSC

XTAL_OUT

XTAL_IN

XTAL_OUT

÷ 16

CCA

PLL

DIV_SEL

PHASE

DETECTOR

SSC_CTL0

SSC_CTL1

CCO

÷2

FOUT

nFOUT

VCO

÷4

TEST_I/O

FOUT

nFOUT

÷ M

ICS8431-21

28-Lead SOIC

TEST_I/O

7.5mm x 18.05mm x 2.25mm package body

M Package

Top View

SSC

Control

Logic

Configuration

Logic

M0:M8

nP_LOAD

SSC_CTL0

SSC_CTL1

DIV_SEL

IDT^™/ ICS^™3.3V LVPECL FREQUENCY SYNTHESIZER

ICS8431AM-21 REV. B AUGUST 22, 2013

12 3 4 5 6 7...19

中文翻译

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与8431AM-21相关器件

型号	品牌	获取价格	描述	数据表
8431AM-21LF	IDT	获取价格	SOIC-28, Tube
8431AM-21LFT	IDT	获取价格	Clock Generator, 350MHz, CMOS, PDSO28, 7.50 X 18.05 MM, 2.25 MM HEIGHT, ROHS COMPLIANT, MS
8431AM-21T	IDT	获取价格	Clock Generator, CMOS, PDSO28
8431AMI-21	IDT	获取价格	Clock Generator, 350MHz, PDSO28, 7.50 X 18.05 MM, 2.25 MM HEIGHT, MS-013, MO-119, SOIC-28
8431AMI-21LF	IDT	获取价格	Clock Generator, 350MHz, PDSO28, 7.50 X 18.05 MM, 2.25 MM HEIGHT, ROHS COMPLIANT, MS-013,
8431AMI-21LFT	IDT	获取价格	Clock Generator, 350MHz, PDSO28, 7.50 X 18.05 MM, 2.25 MM HEIGHT, ROHS COMPLIANT, MS-013,
8431AMI-21T	IDT	获取价格	Clock Generator, 350MHz, PDSO28, 7.50 X 18.05 MM, 2.25 MM HEIGHT, MS-013, MO-119, SOIC-28
8432	FILTRAN	获取价格	WIRE WOUND Ceramic Chip Inductor
843201-375	IDT	获取价格	FemtoClockÂ® Crystal-to-LVPECL 375MHz Frequen
843201AG-375LF	IDT	获取价格	Clock Generator, 375MHz, PDSO16, 4.40 X 5 MM, 0.92 MM HEIGHT, ROHS COMPLIANT, MO-153, TSSO

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