SN74LS74AM 查看數據表（PDF） - ON Semiconductor
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SN74LS74AM Datasheet PDF : 7 Pages
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SN74LS74A
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)
Limits
Symbol
VIH
Parameter
Input HIGH Voltage
Min Typ Max Unit
Test Conditions
2.0
V
Guaranteed Input HIGH Voltage for
All Inputs
VIL
Input LOW Voltage
0.8
V
Guaranteed Input LOW Voltage for
All Inputs
VIK
Input Clamp Diode Voltage
VOH
Output HIGH Voltage
VOL
Output LOW Voltage
Input High Current
Data, Clock
IIH
Set, Clear
Data, Clock
Set, Clear
−0.65 −1.5
V
VCC = MIN, IIN = − 18 mA
2.7 3.5
V
VCC = MIN, IOH = MAX, VIN = VIH
or VIL per Truth Table
0.25 0.4
0.35 0.5
V
IOL = 4.0 mA
V
IOL = 8.0 mA
VCC = VCC MIN,
VIN = VIL or VIH
per Truth Table
20
μA
VCC = MAX, VIN = 2.7 V
40
0.1
0.2
mA VCC = MAX, VIN = 7.0 V
Input LOW Current
IIL
Data, Clock
Set, Clear
−0.4 mA VCC = MAX, VIN = 0.4 V
− 0.8
IOS
Output Short Circuit Current (Note 2)
− 20
−100 mA
ICC
Power Supply Current
8.0
mA
2. Not more than one output should be shorted at a time, nor for more than 1 second.
VCC = MAX
VCC = MAX
AC CHARACTERISTICS (TA = 25°C, VCC = 5.0 V)
Symbol
fMAX
tPLH
tPHL
Parameter
Maximum Clock Frequency
Clock, Clear, Set to Output
AC SETUP REQUIREMENTS (TA = 25°C)
Symbol
tW (H)
tW (L)
ts
th
Clock
Clear, Set
Parameter
Data Setup Time — HIGH
Data Setup Time — LOW
Hold Time
Limits
Min Typ Max
25
33
13
25
25
40
Unit
MHz
ns
ns
Limits
Min Typ Max Unit
25
ns
25
ns
20
ns
20
ns
5.0
ns
Test Conditions
Figure 1
Figure 1
VCC = 5.0 V
CL = 15 pF
Test Conditions
Figure 1
Figure 2
Figure 1
VCC = 5.0 V
Figure 1
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