Datasheet > ICS2495M

ICS2495M

更新时间： 2024-11-08 22:48:15

品牌	Logo	应用领域
矽成 - ICSI		时钟发生器
页数	文件大小	规格书
7页	317K
描述
Dual Video/Memory Clock Generator

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中文翻译

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数据手册

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ICS2495M 数据手册

ICS2495

Integrated

Circuit

Systems, Inc.

Dual Video/Memory Clock Generator

Features

•

Buffered Xtal Out

•

Low cost - eliminates need for multiple crystal clock

oscillators in video display subsystems

Mask-programmable frequencies

Integral Loop Filter components

Fast acquisition of selected frequencies, strobed or non-

strobed

•

Pre-programmed versions for Industry Standard VGA

chips

Glitch-free frequency transitions

•

Guaranteed performance up to 135 MHz

Excellent power supply rejection

Advanced PLL for low phase-jitter

Frequency change detection circuitry enhances new fre-

quency acquisition and eliminates problems caused by

programs that rewrite frequency information

•

Internalclock remains lockedwhen theexternalfrequency

input is selected

Low power CMOS device technology

Small footprint - 16-pin DIP or SOIC

•

Description

Pin Configuration

The ICS2495 Clock Generator is an integrated circuit dual

phase-lockedloop frequencysynthesizer capableof generating

16 video frequencies and 4 memory clock frequencies for use

withhigh performance videodisplay systems. UtilizingCMOS

technology to implement all linear, digital and memory func-

tions, the ICS2495 provides a low-power, small-footprint,

low-cost solutiontothegenerationofvideo dotclocks. Outputs

arecompatiblewith XGA, VGA, EGA, MCGA, CGA, MDA,

as well as the higher frequencies needed for advanced applica-

tions in desktop publishing and workstation graphics. Provi-

sion is made via a single level custom mask to implement

customer specific frequency sets. Phase-locked loop circuitry

permits rapid glitch-free transitions between clock frequencies.

XTAL2

EXTFREQ

FS0

XTAL1

VCLK

XTALOUT

VSS

FS1

STROBE

FS2

VDD

In addition to providing 16 clock rates, the ICS2495 has

provisions to multiplex an externally-generated signal source

into the VCLK signal path. Internal phase-locked frequencies

continue to remain locked attheir presetvalues whenthis mode

is selected. This feature permits instantaneous transition from

an external frequency to an internally-generated frequency.

Printedcircuitboardtestingissimplifiedbytheuseofthesemodes

as an external clock generated by the ATE tester can be fed

through, permitting synchronous testing of the entire system.

N/C

FS3

MCLK

MS1

MS0

16-Pin DIP or SOIC

Notes:

1. ICS2495M(SOIC) pinout is identical to ICS2495N(DIP).

ICS2595RevA090694

12 3 4 5 6 7

中文翻译

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与ICS2495M相关器件

型号	品牌	获取价格	描述	数据表
ICS2495M-XXX	IDT	获取价格	Video Clock Generator, 135MHz, CMOS, PDSO16, SOIC-16
ICS2495M-XXX-LF	IDT	获取价格	Video Clock Generator, 135MHz, CMOS, PDSO16, SOIC-16
ICS2495N	ICSI	获取价格	Dual Video/Memory Clock Generator
ICS2495N-XXX	IDT	获取价格	Video Clock Generator, 135MHz, CMOS, PDIP16, PLASTIC, DIP-16
ICS2495N-XXX-LF	IDT	获取价格	Video Clock Generator, 135MHz, CMOS, PDIP16, PLASTIC, DIP-16
ICS2496M-452	ETC	获取价格	Video/Graphics Clock Generator
ICS2496M-454	ETC	获取价格	Video/Graphics Clock Generator
ICS2496M-456	ETC	获取价格	Video/Graphics Clock Generator
ICS2496M-XXX	IDT	获取价格	Video Clock Generator, 135MHz, CMOS, PDSO16, SOIC-16
ICS2496M-XXX-LF	IDT	获取价格	Video Clock Generator, 135MHz, CMOS, PDSO16, SOIC-16

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