TECHNICAL DATA
IN74HCT574A
Octal 3-State
Noninverting D Flip-Flop
High-Performance Silicon-Gate CMOS
The IN74HCT574A 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.
ORDERING INFORMATION
IN74HCT574AN Plastic
IN74HCT574ADW SOIC
TA = -55° to 125° C for all packages
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•
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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
PIN ASSIGNMENT
LOGIC DIAGRAM
FUNCTION TABLE
PIN 20=VCC
PIN 10 = GND
Inputs
Clock
Output
Q
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 ]
