TECHNICAL DATA
IN74ACT574
Octal 3-State
Noninverting D Flip-Flop
High-Performance Silicon-Gate CMOS
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.
ORDERING INFORMATION
IN74ACT574N Plastic
IN74ACT574DW SOIC
TA = -40° to 85° C for all packages
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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
PIN ASSIGNMENT
LOGIC DIAGRAM
FUNCTION TABLE
Inputs
Clock
Output
Q
PIN 20=VCC
PIN 10 = GND
Output
Enable
D
L
L
L
H
L
H
L
L,H,
X
no
change
H
X
X
Z
X = don’t care
Z = high impedance
Rev. 00
IKSEMICON [ IK SEMICON CO., LTD ]
