HD74AC74 데이터 시트보기 (PDF) - Renesas Electronics
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HD74AC74 Datasheet PDF : 8 Pages
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HD74AC74
Logic Symbol
SD1
D1
Q1
CP1
CD1 Q1
SD2
D2
Q2
CP2
CD2 Q2
Pin Names
D1, D2
CP1, CP2
CD1, CD2
SD1, SD2
Q1, Q1, Q2, Q 2
Data Inputs
Clock Pulse Inputs
Direct Clear Inputs
Direct Set Inputs
Outputs
Truth Table (Each Half)
Inputs
SD
L
CD
H
CP
X
D
X
H
L
X
X
L
L
X
X
H
H
H
H
H
L
H
H
L
X
H
: High Voltage Level
L
: Low Voltage Level
X
: Immaterial
: Low-to-High Clock Transition
Q0 (Q0) : Previous Q (Q) before Low-to-High Transition of Clock
Logic Diagram
SD
D
CP
Outputs
Q
Q
H
L
L
H
H
H
H
L
L
H
Q0
Q0
Q
Q
CD
Please note that this diagram is provised only for the understanding of logic operations and should not be
used to estimate propagation delays.
Rev.2.00, Jul.16.2004, page 2 of 7
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