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SL74HC573

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

System Logic Semiconductor 

SL74HC573

Octal 3-State Noninverting Transparent Latch

High-Performance Silicon-Gate CMOS

The SL74HC573 is identical in pinout to the LS/ALS573. The device

inputs are compatible with standard CMOS outputs; with pullup

resistors, they are compatible with LS/ALSTTL 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

• High Noise Immunity Characteristic of CMOS Devices

ORDERING INFORMATION

SL74HC573N Plastic

SL74HC573D SOIC

TA = -55° to 125° C for all packages

LOGIC DIAGRAM

PIN ASSIGNMENT

PIN 20=VCC

PIN 10 = GND

SLS

System Logic

Semiconductor

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

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