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IN74AC573

Octal 3-State Noninverting Transparent Latch High-Performance Silicon-Gate CMOS

IK Semicon Co., Ltd 

TECHNICAL DATA

Octal 3-State Noninverting

Transparent Latch

High-Performance Silicon-Gate CMOS

IN74AC573

The IN74AC573 is identical in pinout to the LS/ALS573,

HC/HCT573. The device inputs are compatible with standard CMOS

outputs; with pullup resistors, they are compatible with LS/ALS outputs.

These latches appear transparent to data (i.e., the outputs change

asynchronously) when Latch Enable is high. When Latch Enable goes

low, data meeting the setup and hold time becomes latched.

• Outputs Directly Interface to CMOS, NMOS, and TTL

• Operating Voltage Range: 2.0 to 6.0 V

• Low Input Current: 1.0 μA; 0.1 μA @ 25°C

• High Noise Immunity Characteristic of CMOS Devices

• Outputs Source/Sink 24 mA

ORDERING INFORMATION

IN74AC573N Plastic

IN74AC573DW SOIC

TA = -40° to 85° C for all packages

LOGIC DIAGRAM

PIN ASSIGNMENT

PIN 20=VCC

PIN 10 = GND

FUNCTION TABLE

Inputs

Output

Output Latch D

Q

Enable Enable

L

H

H

H

L

H

L

L

L

L

X no change

H

X

X

Z

X = don’t care

Z = high impedance

Rev. 00

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