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IN74ACT574DW

Octal 3-State Noninverting D Flip-Flop High-Performance Silicon-Gate CMOS

IK Semicon Co., Ltd 

TECHNICAL DATA

Octal 3-State

Noninverting D Flip-Flop

High-Performance Silicon-Gate CMOS

IN74ACT574

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

ORDERING INFORMATION

IN74ACT574N Plastic

IN74ACT574DW SOIC

TA = -40° to 85° C for all packages

LOGIC DIAGRAM

PIN ASSIGNMENT

PIN 20=VCC

PIN 10 = GND

FUNCTION TABLE

Output

Enable

L

L

L

Inputs

Clock

L,H,

H

X

X = don’t care

Z = high impedance

Output

D

Q

H

H

L

L

X

no

change

X

Z

Rev. 00

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