HD74AC74 Datasheet, PDF (3/10 Pages) Hitachi Semiconductor – Dual D-Type Positive Edge-Triggered Flip-Flop

Truth Table (Each Half)
Inputs
S_D
C_D
L
H
CP
D
X
X
H
L
X
X
L
L
X
X
H
H
H
H
H
L
H
H
:
L
:
X
:
:
Q₀ (Q₀) :
H
L
X
High Voltage Level
Low Voltage Level
Immaterial
Low-to-High Clock Transition
Previous Q (Q) before Low-to-High Transition of Clock
Outputs
Q
H
L
H
H
L
Q₀
HD74AC74
Q
L
H
H
L
H
Q₀
Logic Diagram
S_D
D
Q
CP
Q
C_D
Please note that this diagram is provised only for the understanding of logic operations and should not be
used to estimate propagation delays.
DC Characteristics (unless otherwise specified)
Item
Symbol Max
Unit
Maximum quiescent supply current I_CC
40
µA
Maximum quiescent supply current I_CC
4.0
µA
Condition
V_IN = V_CC or ground, V_CC = 5.5 V,
Ta = Worst case
V_IN = V_CC or ground, V_CC = 5.5 V,
Ta = 25°C
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