TECHNICAL DATA

IN74ACT574

Octal 3-State

Noninverting D Flip-Flop

High-Performance Silicon-Gate CMOS

ORDERING INFORMATION

IN74ACT574N Plastic

IN74ACT574DW SOIC

The IN74ACT574 is identical in pinout to the LS/ALS574,

HC/HCT574. The IN74ACT574 may be used as a level converter for

interfacing TTL or NMOS outputs to High Speed CMOS inputs.

Data meeting the setup time is clocked to the outputs with the rising

edge of the Clock. The Output Enable input does not affect the states of

the flip-flops, but when Output Enable is high, all device outputs are

forced to the high-impedance state; thus, data may be stored even when

the outputs are not enabled.

• 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

FUNCTION TABLE

Inputs

Output

Output

Enable

Clock

D

Q

L

H

H

L

L

L

L

L,H,

X

no

change

H

X

X

Z

X = don’t care

Z = high impedance

PIN ASSIGNMENT

LOGIC DIAGRAM

PIN 10 = GND

Rev. 00