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74VHCT74A Scheda tecnica(PDF) 4 Page - Fairchild Semiconductor

Il numero della parte 74VHCT74A
Spiegazioni elettronici  Dual D-Type Flip-Flop with Preset and Clear
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Produttore elettronici  FAIRCHILD [Fairchild Semiconductor]
Homepage  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

74VHCT74A Scheda tecnica(HTML) 4 Page - Fairchild Semiconductor

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4
AC Electrical Characteristics
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
VCC
(V)
(Note 7)
TA 25qCTA 40qC to 85qC
Units
Conditions
Min
Typ
Max
Min
Max
fMAX
Maximum Clock
5.0
100
160
80
MHz
CL 15 pF
Frequency
5.0
80
140
65
CL 50 pF
tPLH
Propagation Delay Time
5.0
5.8
7.8
1.0
9.0
ns
CL 15 pF
tPHL
(CK-Q, Q)
5.0
6.3
8.8
1.0
10.0
CL 50 pF
tPLH
Propagation Delay time
5.0
7.6
10.4
1.0
12.0
ns
CL 15 pF
tPHL
(CLR, PR -Q, Q)
5.0
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)
Symbol
Parameter
VCC
TA 25qCTA 40qC to 85qC
Units
(V)
Typ
Guaranteed Minimum
tW(L)
Minimum Pulse Width (CK)
5.0
r 0.5
5.0
5.0
ns
tW(H)
tW(L)
Minimum Pulse Width
5.0
r 0.5
5.0
5.0
ns
(CLR, PR)
tS
Minimum Setup Time
5.0
r 0.5
5.0
5.0
ns
tH
Minimum Hold Time
5.0
r 0.5
0
0
ns
tREM
Minimum Removal Time
5.0
r 0.5
3.5
3.5
ns
(CLR, PR)


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