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74VHC74 Datasheet(PDF) 4 Page - STMicroelectronics

Part No. 74VHC74
Description  DUAL D-TYPE FLIP FLOP WITH PRESET AND CLEAR
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

74VHC74 Datasheet(HTML) 4 Page - STMicroelectronics

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AC ELECTRICAL CHARACTERISTICS (Input tr =tf =3 ns)
Symb ol
Parameter
Test Co nditi on
Val ue
Un it
VCC
(V)
CL
(pF )
TA =25
oC
-40 to 85
oC
Min.
Typ .
Max.
Min .
Max.
tPLH
tPHL
Propagation Delay
Time
CK to Q or Q
3.3
(*)
15
6.7
11.9
1.0
14.0
ns
3.3
(*)
50
9.2
15.4
1.0
17.5
5.0
(**)
15
4.6
7.3
1.0
8.5
5.0
(**)
50
6.1
9.3
1.0
10.5
tPLH
tPHL
Propagation Delay
Time
PR or CLR to Q or Q
3.3
(*)
15
7.6
12.3
1.0
14.5
ns
3.3
(*)
50
10.1
15.8
1.0
18.0
5.0
(**)
15
4.8
7.7
1.0
9.0
5.0
(**)
50
6.3
9.7
1.0
11.0
tw
CK Pulse Width
HIGH or LOW
3.3
(*)
6.0
7.0
ns
5.0
(**)
5.0
5.0
tw
PR or CLR Pulse
Width LOW
3.3
(*)
6.0
7.0
ns
5.0
(**)
5.0
5.0
ts
Setup Time D to CK
HIGH or LOW
3.3
(*)
6.0
7.0
ns
5.0
(**)
5.0
5.0
th
Hold Time D to CK
HIGH or LOW
3.3
(*)
0.5
0.5
ns
5.0
(**)
0.5
0.5
tREM
Removal Time CLR or
PR to CK
3.3
(*)
5.0
5.0
ns
5.0
(**)
3.0
3.0
fMAX
Maximum Clock
Frequency
3.3
(*)
15
80
125
70
MHz
3.3
(*)
50
50
75
45
5.0
(**)
15
130
170
110
5.0
(**)
50
90
115
75
(*) Voltage range is 3.3V
± 0.3V
(**) Voltage range is 5V
± 0.5V
CAPACITIVE CHARACTERISTICS
Symb ol
Parameter
Test Co nditi ons
Valu e
Un it
VCC
(V)
TA =25
oC
-40 to 85
oC
Min.
T yp.
Max.
Mi n.
Max.
CIN
Input Capacitance
3.3
410
10
pF
CPD
Power Dissipation
Capacitance (note 1)
3.3
fIN = 10 MHz
25
pF
1) CPD isdefined as the value of the IC’sinternal equivalent capacitance which is calculated fromthe operating current consumption without load. (Referto
Test Circuit).Average operting current can be obtained by the following equation. ICC(opr) = CPD
• VCC • fIN +ICC/2(per Flip-Fliop)
74VHC74
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