74AC191CW 查看數據表（PDF） - Fairchild Semiconductor
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74AC191CW Datasheet PDF : 10 Pages
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AC Operating Requirements
Symbol
Parameter
tS
Setup Time, HIGH or LOW
Pn to PL
tH
Hold Time, HIGH or LOW
Pn to PL
tS
Setup Time, LOW
CE to CP
tH
Hold Time, LOW
CE to CP
tS
Setup Time, HIGH or LOW
U/D to CP
tH
Hold Time, HIGH or LOW
U/D to CP
tW
PL Pulse Width, LOW
tW
CP Pulse Width, LOW
trec
Recovery Time
PL to CP
Note 7: Voltage Range 3.3 is 3.3V ± 0.3V
Voltage Range 5.0 is 5.0V ± 0.5V
Capacitance
VCC
(V)
(Note 7)
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
TA = +25°C
C L = 50 pF
Typ
TA = −40°C to +85°C
CL = 50 pF
Guaranteed Minimum
1.0
3.0
3.0
0.5
2.0
2.5
−1.5
0.5
1.0
−0.5
1.0
1.0
3.0
6.0
7.0
1.5
4.0
4.5
−4.0
−0.5
−0.5
−2.5
0
0
4.0
8.0
9.0
2.5
5.5
6.5
−5.0
0
0
−3.0
0.5
0.5
2.0
3.5
4.0
1.0
1.0
1.0
2.0
3.5
4.0
2.0
3.0
4.0
−0.5
0
0
−1.0
0
0
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
Symbol
CIN
CPD
Parameter
Input Capacitance
Power Dissipation Capacitance
Typ
Units
Conditions
4.5
pF
VCC = OPEN
75.0
pF
VCC = 5.0V
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