SL74HCT574

System Logic

Semiconductor

SLS

Octal 3-State Noninverting D Flip-Flop

High-Performance Silicon-Gate CMOS

The SL74HCT574 is identical in pinout to the LS/ALS574. This

device 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

ORDERING INFORMATION

SL74HCT574N Plastic

SL74HCT574D SOIC

° to 125° C for all packages

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

LOGIC DIAGRAM

PIN 10 = GND

PIN ASSIGNMENT