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74AC74 Datasheet(PDF) 5 Page - STMicroelectronics

Part No. 74AC74
Description  DUAL D-TYPE FLIP FLOP WITH PRESET AND CLEAR
Download  11 Pages
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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74AC74 Datasheet(HTML) 5 Page - STMicroelectronics

 
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CAPACITIVE CHARACTERISTICS
Symbol
Parameter
Test Con dition s
Value
Unit
VCC
(V)
TA =25
oC-40 to 85 oC
Mi n.
Typ.
Max.
Min .
Max.
CIN
Input Capacitance
5.0
4
pF
CPD
Power Dissipation
Capacitance (note 1)
5.0
35
pF
1) CPD is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without load. (Refer to
Test Circuit). Average operating current can be obtained by the following equation. ICC(opr) = CPD
• VCC •fIN +ICC/n (per circuit)
AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, RL = 500
Ω, Input tr =tf =3 ns)
Symbol
Parameter
T est Cond iti on
Value
Unit
VCC
(V)
TA =25
oC-40 to 85 oC
Mi n.
Typ.
Max.
Min .
Max.
tPLH
tPHL
Propagation Delay Time
CK to Q
3.3
(*)
713
14
ns
5.0
(**)
510
11
tPLH
tPHL
Propagation Delay Time
PR or CLR to Q
3.3
(*)
612
13
ns
5.0
(**)
4.5
9
10
tw
Pulse Width HIGH or
LOW, CK or PR or CLR
3.3
(*)
1.5
5
7
ns
5.0
(**)
1.5
4
5
ts
Setup Time D to CK
HIGH or LOW
3.3
(*)
-0.2
4
4
ns
5.0
(**)
-0.2
3
3
th
Hold Time D to CK
HIGH or LOW
3.3
(*)
0.2
2
3
ns
5.0
(**)
0.2
2
3
tREM
Removal Time
PR or CLR to CK
3.3
(*)
-1
1
1
ns
5.0
(**)
-0.7
1
1
fMAX
Maximum Clock
Frequency
3.3
(*)
100
300
90
MHz
5.0
(**)
140
300
130
(*) Voltage range is 3.3V
± 0.3V
(**) Voltage range is 5V
± 0.5V
74AC74
5/11


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