74VHC595 查看數據表（PDF） - Fairchild Semiconductor
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74VHC595 Datasheet PDF : 9 Pages
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AC Electrical Characteristics
Symbol
Parameter
VCC
TA = +25°C
TA = −40°C to +85°C
Units
(V)
Min
Typ
Max
Min
Max
Conditions
tPLH
Propagation Delay Time 3.3 ± 0.3
tPHL
RCK to QA–QH
5.0 ± 0.5
tPLH
Propagation Delay Time 3.3 ± 0.3
tPHL
SCK–Q'H
5.0 ± 0.5
tPHL
Propagation Delay Time 3.3 ± 0.3
SCLR –Q'H
7.7
11.9
1.0
13.5
ns
10.2
15.4
1.0
17.0
5.4
7.4
1.0
8.5
ns
6.9
9.4
1.0
10.5
8.8
13.0
1.0
15.0
ns
11.3
16.5
1.0
18.5
6.2
8.2
1.0
9.4
ns
7.7
10.2
1.0
11.4
8.4
12.8
1.0
13.7
ns
10.9
16.3
1.0
17.2
CL = 15 pF
CL = 50 pF
CL = 15 pF
CL = 50 pF
CL = 15 pF
CL = 50 pF
CL = 15 pF
CL = 50 pF
CL = 15 pF
CL = 50 pF
5.0 ± 0.5
5.9
8.0
1.0
9.1
ns
7.4
10.0
1.0
11.1
CL = 15 pF
CL = 50 pF
tPZL
Output Enable Time
3.3 ± 0.3
tPZH
G to QA–QH
7.5
11.5
1.0
13.5
ns RL = 1 kΩ
CL = 15 pF
9.0
15.0
1.0
17.0
CL = 50 pF
5.0 ± 0.5
4.8
8.6
1.0
10.0
ns
8.3
10.6
1.0
12.0
CL = 15 pF
CL = 50 pF
tPLZ
Output Disable Time
3.3 ± 0.3
tPHZ
G to QA–QH
5.0 ± 0.5
12.1
15.7
1.0
16.2
ns RL = 1 kΩ
CL = 50 pF
7.6
10.3
1.0
11.0
CL = 50 pF
fMAX
Maximum Clock
Frequency
3.3 ± 0.3 80
150
55
130
70
MHz
CL = 15 pF
50
CL = 50 pF
5.0 ± 0.5 135
185
95
155
115
MHz
85
CL = 15 pF
CL = 50 pF
tOSLH
tOSHL
Output to Output
Skew
3.3 ± 0.3
5.0 ± 0.5
1.5
1.5
(Note 4)
ns
CL = 50 pF
1.0
1.0
CL = 50 pF
CIN
Input Capacitance
5.0
10
10
pF VCC = Open
COUT
Output Capacitance
6.0
pF VCC = 5.0V
CPD
Power Dissipation
87
Capacitance
(Note 5)
pF
Note 4: Parameter guaranteed by design. tOSLH = | tPLH max − tPLH min|; tOSHL = | tPHL max − tPHL min|.
Note 5: CPD is defined as the value of the internal equivalent capacitance which is calculated from the operating current consumption without load. Average
operating current can be obtained by the equation: ICC (opr.) = CPD * VCC * fIN + ICC.
5
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