IN74ACT573

1

High-Performance Silicon-Gate CMOS

The IN74ACT573 is identical in pinout to the LS/ALS573,

HC/HCT573. The IN74ACT573 may be used as a level converter

for interfacing TTL or NMOS outputs to High Speed CMOS inputs.

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.

• TTL/NMOS Compatible Input Levels

• Outputs Directly Interface to CMOS, NMOS, and TTL

• Operating Voltage Range: 4.5 to 5.5 V

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

• Outputs Source/Sink 24 mA

ORDERING INFORMATION

IN74ACT573N Plastic

IN74ACT573DW SOIC

packages

FUNCTION TABLE

Inputs

Output

Output

Enable

Latch

Enable

D

Q

L

H

H

H

L

H

L

L

L

L

X

no

change

H

X

X

Z

X = don’t care

Z = high impedance

LOGIC DIAGRAM

PIN 10 = GND

PIN ASSIGNMENT