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74AC74 Datasheet(PDF) 2 Page - ON Semiconductor

Part No. 74AC74
Description  Dual D−Type Positive Edge−Triggered Flip−Flop
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
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74AC74 Datasheet(HTML) 2 Page - ON Semiconductor

 
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MC74AC74, MC74ACT74
http://onsemi.com
2
TRUTH TABLE (Each Half)
Inputs
Outputs
SD
CD
CP
D
Q
Q
L
H
X
X
H
L
H
L
X
X
L
H
L
L
X
X
H
H
H
H
H
H
L
H
H
L
L
H
H
H
L
X
Q0
Q0
NOTE: 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
Figure 2. Logic Symbol
SD1
Q1
CP1
Q1
CD1
SD2
Q2
D2 CP2
Q2
CD2
D1
SD
D
CP
CD
Q
Q
Figure 3. Logic Diagram
NOTE: This diagram is provided only for the understanding of
logic operations and should not be used to estimate
propagation delays.
MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
VCC
DC Supply Voltage (Referenced to GND)
−0.5 to +7.0
V
Vin
DC Input Voltage (Referenced to GND)
−0.5 to VCC +0.5
V
Vout
DC Output Voltage (Referenced to GND)
−0.5 to VCC +0.5
V
Iin
DC Input Current, per Pin
±20
mA
Iout
DC Output Sink/Source Current, per Pin
±50
mA
ICC
DC VCC or GND Current per Output Pin
±50
mA
Tstg
Storage Temperature
−65 to +150
°C
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.


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