74VHCT74AMX 查看數據表（PDF） - Fairchild Semiconductor
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74VHCT74AMX Datasheet PDF : 8 Pages
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AC Electrical Characteristics
Symbol
Parameter
VCC
TA 25qC
TA 40qC to 85qC
(V)
Units
(Note 7) Min
Typ
Max
Min
Max
Conditions
fMAX
Maximum Clock
Frequency
5.0
100
160
5.0
80
140
80
MHz CL 15 pF
65
CL 50 pF
tPLH
Propagation Delay Time
5.0
tPHL
(CK-Q, Q)
5.0
5.8
7.8
1.0
9.0
ns CL 15 pF
6.3
8.8
1.0
10.0
CL 50 pF
tPLH
Propagation Delay time
5.0
tPHL
(CLR, PR -Q, Q)
5.0
7.6
10.4
1.0
12.0
ns CL 15 pF
8.1
11.4
1.0
13.0
CL 50 pF
CIN
Input Capacitance
4
10
10
pF VCC Open
CPD
Power Dissipation Capacitance
24
pF (Note 8)
Note 7: VCC is 5.0 r 0.5V
Note 8: CPD is defined as the value of 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 u VCC u fIN ICC/2 (per flip-flop).
AC Operating Requirements
Symbol
Parameter
tW(L)
tW(H)
tW(L)
tS
tH
tREM
Minimum Pulse Width (CK)
Minimum Pulse Width
(CLR, PR)
Minimum Setup Time
Minimum Hold Time
Minimum Removal Time
(CLR, PR)
VCC
(V)
5.0 r 0.5
5.0 r 0.5
5.0 r 0.5
5.0 r 0.5
5.0 r 0.5
TA 25qC
TA 40qC to 85qC
Typ
Guaranteed Minimum
5.0
5.0
Units
ns
5.0
5.0
ns
5.0
5.0
ns
0
0
ns
3.5
3.5
ns
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