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IN74ACT74D

Dual D Flip-Flop with Set and Reset

IK Semicon Co., Ltd 

TECHNICAL DATA

Dual D Flip-Flop with Set and Reset

High-Speed Silicon-Gate CMOS

IN74ACT74

The IN74ACT74 is identical in pinout to the LS/ALS74, HC/HCT74.

The IN74ACT74 may be used as a level converter for interfacing TTL or

NMOS outputs to High Speed CMOS inputs.

This device consists of two D flip-flops with individual Set, Reset,

and Clock inputs. Information at a D-input is transferred to the

corresponding Q output on the next positive going edge of the clock input.

Both Q and Q outputs are available from each flip-flop. The Set and Reset

inputs are asynchronous.

• 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

IN74ACT74N Plastic

IN74ACT74D SOIC

TA = -40° to 85° C for all packages

PIN ASSIGNMENT

LOGIC DIAGRAM

PIN 14 =VCC

PIN 7 = GND

FUNCTION TABLE

Inputs

Outputs

Set Reset Clock Data Q Q

LH

X

XHL

HL

X

XLH

L

L

X

X

H*

H*

HH

HHL

HH

L

L

H

HH

L

X No Change

HH

H

X No Change

HH

X No Change

*Both outputs will remain high as long as Set

and Reset are low, but the output states are

unpredictable if Set and Reset go high

simultaneously.

X = don’t care

Rev. 00

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