74VHCT374A(2005) 데이터 시트보기 (PDF) - Fairchild Semiconductor
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74VHCT374A Datasheet PDF : 8 Pages
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AC Electrical Characteristics
Symbol
Parameter
VCC
TA 25qC
TA 40qC to 85qC
Units
(V)
Min
Typ
Max
Min
Max
Conditions
tPLH
tPHL
tPZL
tPZH
tPLZ
tPHZ
tOSLH
tOSHL
fMAX
CIN
Propagation Delay Time
5.0 r 0.5
3-STATE Output Enable Time
5.0 r 0.5
3-STATE Output Disable Time 5.0 r 0.5
Output to Output Skew
5.0 r 0.5
Maximum Clock Frequency
90
5.0 r 0.5
85
Input
Capacitance
4.1
9.4
1.0
5.6
10.4
1.0
6.5
10.2
1.0
7.3
11.2
1.0
7.0
11.2
1.0
1.0
140
80
130
75
4
10
10.5
11.5
11.5
12.5
12.0
ns
CL 15 pF
CL 50 pF
ns RL 1 k: CL 15 pF
CL 50 pF
ns RL 1 k: CL 50 pF
1.0
(Note 8)
MHz
CL 15 pF
CL 50 pF
10
pF VCC Open
COUT
Output Capacitance
CPD
Power Dissipation Capacitance
Note 8: Parameter guaranteed by design. tOSLH
9
25
|tPLH max tPLH min|; tOSHL |tPHL max tPHL min|
pF VCC 5.0V
pF (Note 9)
Note 9: 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 12m.
AC Operating Requirements
Symbol
Parameter
tW(H)
tW(L)
tS
tH
Minimum Pulse
Width (CP)
Minimum Set-up Time
Minimum Hold Time
VCC
TA 25qC
(V)
Min
Typ
Max
5.0 r 0.5
6.5
5.0 r 0.5
2.5
5.0 r 0.5
2.5
TA 40qC to 85qC
Min
Max
8.5
2.5
2.5
Units
ns
ns
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