74VHC74(2014) View Datasheet(PDF) - Fairchild Semiconductor
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74VHC74 Datasheet PDF : 10 Pages
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AC Electrical Characteristics
Symbol
Parameter
fMAX
Maximum Clock
Frequency
tPLH, tPHL Propagation Delay
Time (CK-Q, Q)
tPLH, tPHL Propagation Delay
Time (CLR, PR -Q, Q)
CIN Input Capacitance
CPD Power Dissipation
Capacitance
VCC (V)
3.3 ± 0.3
5.0 ± 0.5
3.3 ± 0.3
5.0 ± 0.5
3.3 ± 0.3
5.0 ± 0.5
Conditions
CL = 15pF
CL = 50pF
CL = 15pF
CL = 50pF
CL = 15pF
CL = 50pF
CL = 15pF
CL = 50pF
CL = 15pF
CL = 50pF
CL = 15pF
CL = 50pF
VCC = Open
(3)
TA = 25°C
Min. Typ. Max.
80 125
50 75
130 170
90 115
6.7 11.9
9.2 15.4
4.6 7.3
6.1 9.3
7.6 12.3
10.1 15.8
4.8 7.7
6.3 9.7
4
10
25
TA = –40°C
to +85°C
Min. Max.
70
45
110
75
1.0 14.0
1.0 17.5
1.0 8.5
1.0 10.5
1.0 14.5
1.0 18.0
1.0 9.0
1.0 11.0
10
Units
MHz
ns
ns
pF
pF
Note:
3. 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 from the equation:
ICC (opr.) = CPD • VCC • fIN + ICC / 2 (per F/F).
AC Operating Requirements
Symbol
Parameter
tW(L), tW(H) Minimum Pulse Width (CK)
tW(L)
Minimum Pulse Width (CLR, PR)
tS
Minimum Setup Time
tH
Minimum Hold Time
tREC
Minimum Recovery Time (CLR, PR)
Note:
4. VCC is 3.3 ± 0.3V or 5.0 ± 0.5V
VCC (V)(4)
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
TA = 25°C
TA = –40°C
to +85°C
Guaranteed
Typ.
Minimum
6.0
7.0
5.0
5.0
6.0
7.0
5.0
5.0
6.0
7.0
5.0
5.0
0.5
0.5
0.5
0.5
5.0
5.0
3.0
3.0
Units
ns
ns
ns
ns
ns
©1992 Fairchild Semiconductor Corporation
74VHC74 Rev. 1.3.1
5
www.fairchildsemi.com
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