580M-01 查看數據表（PDF） - Integrated Device Technology

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580M-01

GLITCH-FREE CLOCK MULITPLEXER

Integrated Device Technology 

GLITCH-FREE CLOCK MULITPLEXER

DATASHEET

ICS580-01

Description

The ICS580-01 is a clock multiplexer (mux) designed to

switch between two clock sources with no glitches or short

pulses. The operation of the mux is controlled by an input

pin but the part can also be configured to switch

automatically if one of the input clocks stops. The part also

provides clock detection by reporting when an input clock

has stopped.

For a clock mux with zero delay and smooth switching, see

either the ICS581-01 or the ICS581-02.

Features

• 16-pin SOIC and 16-pin TSSOP packages available

• Available in Pb (lead) free package

• No short pulses or glitches on output

• Operates from 2 to 220 MHz

• Low skew outputs

• Clock detect feature

• Ideal for systems with back-up or redundant clocks

• Selectable timeouts for clock detection

• Separate supply voltages allow power supply voltage

translation

• Operates from 2.5 V to 5 V

NOTE: EOL for non-green parts to occur on 5/13/10

per PDN U-09-01

Block Diagram

VDDI

VDDC

INB

INA

SELB

DIV

1

0

Transition

Detector

Timer

Transition

Detector

OE1

OE2

OE4

OE3

CLK1

CLK2

NO_INB

NO_INA

GND

IDT™ / ICS™ GLITCH-FREE CLOCK MULITPLEXER

1

ICS580-01 REV K 092509

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