74VHC374 데이터 시트보기 (PDF) - Fairchild Semiconductor
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74VHC374 Datasheet PDF : 7 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
(CP to On)
8.1
12.7
1.0
15.0
ns
10.6
16.2
1.0
18.5
CL = 15 pF
CL = 50 pF
5.0 ± 0.5
5.4
8.1
1.0
9.5
ns
6.9
10.1
1.0
11.5
CL = 15 pF
CL = 50 pF
tPZL
3-STATE Output
tPZH
Enable Time
3.3 ± 0.3
7.1
11.0
1.0
13.0
ns RL = 1 kΩ CL = 15 pF
9.6
14.5
1.0
16.5
CL = 50 pF
5.0 ± 0.5
5.1
7.6
1.0
9.0
ns
6.6
9.6
1.0
11.0
CL = 15 pF
CL = 50 pF
tPLZ
3-STATE Output
tPHZ
Disable Time
3.3 ± 0.3
5.0 ± 0.5
10.2
14.0
1.0
16.0
ns RL = 1 kΩ CL = 50 pF
6.1
8.8
1.0
10.0
CL = 50 pF
tOSLH
tOSHL
Output to Output Skew
3.3 ± 0.3
5.0 ± 0.5
1.5
1.5
ns (Note 4) CL = 50 pF
1.0
1.0
CL = 50 pF
fMAX
Maximum Clock Frequency 3.3 ± 0.3 80
130
70
CL = 15 pF
55
85
5.0 ± 0.5 130
185
50
MHz
CL = 50 pF
110
CL = 15 pF
85
120
75
CL = 50 pF
CIN
Input Capacitance
4
10
10
pF VCC = Open
COUT
Output Capacitance
6
pF VCC = 5.0V
CPD
Power Dissipation
32
pF (Note 5)
Capacitance
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/8 (per F/F). The total CPD when n pcs. of the Octal D Flip-Flop operates
can be calculated by the equation: CPD (total) = 20 + 12n.
AC Operating Requirements
Symbol
Parameter
tW(H)
tW(L)
tS
Minimum Pulse Width (CP)
Minimum Set-Up Time
tH
Minimum Hold Time
VCC
TA = 25°C
TA = −40°C to +85°C
Units
(V)
Min
Typ
Max
Min
Max
3.3 ± 0.3 5.0
5.0 ± 0.5 5.0
5.5
ns
5.0
3.3 ± 0.3 4.5
5.0 ± 0.5 3.0
4.5
ns
3.0
3.3 ± 0.3 2.0
2.0
ns
5.0 ± 0.5 2.0
2.0
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