Datasheet > ICS8431EM-11LF

ICS8431EM-11LF

更新时间： 2024-11-03 21:15:39

品牌	Logo	应用领域
艾迪悌 - IDT		时钟光电二极管外围集成电路晶体
页数	文件大小	规格书
17页	561K
描述
Clock Generator, 255MHz, PDSO28, 7.50 X 18.05 MM, 2.25 MM HEIGHT, LEAD FREE, MS-013, MO-119, SOIC-28

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ICS8431EM-11LF 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Obsolete	零件包装代码：	SOIC
包装说明：	7.50 X 18.05 MM, 2.25 MM HEIGHT, LEAD FREE, MS-013, MO-119, SOIC-28	针数：	28
Reach Compliance Code：	unknown	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.8
JESD-30 代码：	R-PDSO-G28	JESD-609代码：	e3
长度：	18.05 mm	端子数量：	28
最高工作温度：	85 °C	最低工作温度：
最大输出时钟频率：	255 MHz	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）：	260	电源：	3.3 V
主时钟/晶体标称频率：	20 MHz	认证状态：	Not Qualified
座面最大高度：	2.65 mm	子类别：	Clock Generators
最大压摆率：	140 mA	最大供电电压：	3.465 V
最小供电电压：	3.135 V	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：	MATTE TIN
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：	NOT SPECIFIED
宽度：	7.5 mm	uPs/uCs/外围集成电路类型：	CLOCK GENERATOR, OTHER
Base Number Matches：	1

ICS8431EM-11LF 数据手册

ICS8431-11

Integrated

Circuit

Systems, Inc.

255MH

, LOW

ITTER, CRYSTAL

SCILLATOR

TO-3.3V LVPECL FREQUENCY

SYNTHESIZER

GENERAL DESCRIPTION

FEATURES

• Fully integrated PLL

The ICS8431-11 is a general purpose clock fre-

ICS

quency synthesizer for IA64/32 application and

a member of the HiPerClockS™family of High

Performance Clock Solutions from ICS.The VCO

operates at a frequency range of 250MHz to

• Differential 3.3V LVPECL output

• Crystal oscillator interface

HiPerClockS™

• Output frequency range: 125MHz to 255MHz

• Crystal input frequency range: 14MHz to 20MHz

• VCO range: 250MHz to 510MHz

510MHz providing an output frequency range of 125MHz to

255MHz.The output frequency can be programmed using the

parallel interface, M0 through M8, to the configuration logic.

Spread spectrum clocking is programmed via the control in-

puts SSC_CTL0 and SSC_CTL1.

• Programmable PLL loop divider for generating a variety

of output frequencies

Programmable features of the ICS8431-11 support four op-

erational modes.The four modes are spread spectrum clock-

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

which are controlled by the SSC_CTL[1:0] pins. Unlike other

synthesizers, the ICS8431-11 can immediately change

spread-spectrum operation without having to reset the device.

• 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

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

• 3.3V supply voltage

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 useful for in-circuit testing and allows the differen-

tial output to be driven at a lower frequency throughout the

system clock tree. In the other PLL bypass mode, the oscilla-

tor 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.

• Lead-Free package available

• 0°C to 85°C ambient operating temperature

BLOCK DIAGRAM

PIN ASSIGNMENT

nP_LOAD

V^CC

XTAL2

XTAL1

V^CCA

VEE

V^CCO

FOUT

nFOUT

V^EE

XTAL1

OSC

XTAL2

÷ 16

PLL

PHASE

DETECTOR

SSC_CTL0

SSC_CTL1

V^EE

TEST_I/O

V^CC

VCO

÷ 2

FOUT

nFOUT

÷ M

ICS8431-11

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

8431EM-11

www.icst.com/products/hiperclocks.html

REV. D OCTOBER 21, 2004

12 3 4 5 6 7...17

中文翻译

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与ICS8431EM-11LF相关器件

型号	品牌	获取价格	描述	数据表
ICS8431EM-11LFT	IDT	获取价格	Clock Generator, 255MHz, PDSO28, 7.50 X 18.05 MM, 2.25 MM HEIGHT, LEAD FREE, MS-013, MO-11
ICS8431EM-11T	IDT	获取价格	Clock Generator, 255MHz, PDSO28, 7.50 X 18.05 MM, 2.25 MM HEIGHT, MS-013, MO-119, SOIC-28
ICS8431EMI-01	IDT	获取价格	Clock Generator, 200MHz, PDSO28, 7.50 X 18.05 MM, 2.25 MM, MS-013, MO-119, SOIC-28
ICS8431EMI-01LF	IDT	获取价格	Clock Generator, 200MHz, PDSO28, 7.50 X 18.05 MM, 2.25 MM, MS-013, MO-119, SOIC-28
ICS8431I-21	ICSI	获取价格	350MHZ, LOW JITTER, CRYSTAL OSCILLATOR-TO-3.3V LVPECL FREQUENCY SYNTHESIZER
ICS84320-01	IDT	获取价格	780MHZ, CRYSTAL-TO-3.3V DIFFERENTIAL LVPECL FREQUENCY SYNTHESIZER
ICS84320-01	ICSI	获取价格	780MHZ, CRYSTAL-TO-3.3V DIFFERENTIAL LVPECL FREQUENCY SYNTHESIZER
ICS84320-01K	ICSI	获取价格	780MHZ, CRYSTAL-TO-3.3V DIFFERENTIAL LVPECL FREQUENCY SYNTHESIZER
ICS843204AGI	ICSI	获取价格	FEMTOCLOCKS? CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER
ICS843204AGI-01	IDT	获取价格	Clock Generator, 156.25MHz, PDSO48, 6.10 X 12.50 MM, 0.925 MM HEIGHT, MO-153, TSSOP-48

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