Datasheet > IMISG508AXB

IMISG508AXB

更新时间： 2024-11-20 23:58:39

品牌	Logo	应用领域
其他 - ETC		时钟发生器光电二极管
页数	文件大小	规格书
7页	79K
描述
Miscellaneous Clock Generator

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IMISG508AXB 数据手册

IMISG508

REDUCED EMI CLOCK CHIP

CMOS LSI

May 1996

SPECTRUM SPREAD CLOCK GENERATOR

PRODUCT FEATURES

PRODUCT DESCRIPTION

Generates CPU Clock Signals for Microprocessor

Systems

The IMISG508 is a spectrum spread clock generator

specially designed for personal computers, laser

printers and other digital systems. IMISG508 uses a

patented concept to generate popular clock frequencies

that are intentionally boradbanded to reduce

electromagnetic interference. IMISG508 attenuates the

radiated emission amplitudes from products associated

with either the clock harmonics or any signals derived

from the clock signals nominally 10 dB and could

significantly reduce the cost of complying with the

regulatory requirements.

Reduces Measured EMI by 10 dB nominal

4V to 6V Operating Supply Range

Supports CPUs from all major manufacturers

Wide Range of Selectable Output Frequencies

including 40, 30, 25, and 16.7 MHz.

Single, Low Cost Crystal used as Reference

Frequency

PRCLK is the broadbanded output and can be

programmed by the PRCLK Frequency Selection Table

on page 2. A single, low cost external crystal is

required as reference frequency for the synthesizer.

Output modulation function can be turned off with the

SSON pin. Several power down modes add the

flexibility to operate the device in a completely static

mode to reduce standby currents and simplify system

board tests.

Glitch-Free Switching

50% Duty Cycle

Power Down Mode for Low Power consumption

TTL or CMOS Compatible Outputs with 6 mA Drive

Capability

CONNECTION DIAGRAM

Low, Short- and Long-Term Jitter

VDD

OSCin

OSCout

VSS

MPSEL

AVDD

VDD

MPCLK

VSS

PRCLK

AVSS

LF1

16 Pin PDIP and 16 Pin SOIC (300 mil Body)

Package Options

BLOCK DIAGRAM

SSON

44.2

MHz

/4 or /12

REF

MPCLK

APPLICATIONS

MPSEL

The IMISG508 eliminates the need for multiple

oscillators and generates the CPU clock signals for

personal computers, laser printers and other digital

systems. Supports CPUs from all major manufacturers.

IMISG508 can be used with laptop or notebook

computers to save power by running the system slower

than normal CPU speeds or completely disabling the

clocks in standby mode.

SPECTRUM

SPREAD

CLOCK GEN

PRCLK

SSON

INTERNATIONAL MICROCIRCUITS, INC. 525 LOS COCHES ST.

MILPITAS, CA 95035 TEL: 408-263-6300 FAX 408-263-6571

Rev. 1.0

Page 1 of 7

12 3 4 5 6 7

中文翻译

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与IMISG508AXB相关器件

型号	品牌	获取价格	描述	数据表
IMISG508PB	CYPRESS	获取价格	Processor Specific Clock Generator, 40MHz, CMOS, PDIP16, PLASTIC, DIP-16
IMISG509	ETC	获取价格	REDUCED EMI CLOCK CHIP CMOS LSI SPECTRUM SPREAD CLOCK GENERATOR
IMISG509AXB	CYPRESS	获取价格	Processor Specific Clock Generator, 60MHz, CMOS, PDSO16
IMISG509PB	ETC	获取价格	Miscellaneous Clock Generator
IMISG509XB	ETC	获取价格	Miscellaneous Clock Generator
IMISG509XPB	ETC	获取价格	REDUCED EMI CLOCK CHIP CMOS LSI SPECTRUM SPREAD CLOCK GENERATOR
IMISG509XXB	ETC	获取价格	REDUCED EMI CLOCK CHIP CMOS LSI SPECTRUM SPREAD CLOCK GENERATOR
IMISG511XYB	CYPRESS	获取价格	Processor Specific Clock Generator, 66.6MHz, CMOS, PDSO28, SSOP-28
IMISG517CZ	CYPRESS	获取价格	Clock Generator, CMOS, PDSO8, 0.150 INCH, SOIC-8
IMISG521BX	CYPRESS	获取价格	Clock Generator, 120MHz, CMOS, PDSO16, 0.300 INCH, PLASTIC, SOIC-16

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