M74HC74 Ver la hoja de datos (PDF) - STMicroelectronics
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M74HC74 Datasheet PDF : 11 Pages
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M54/M74HC74
AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, Input tr = tf = 6 ns)
Symbol
Parameter
Test Conditions
VCC
(V)
TA = 25 oC
54HC and 74HC
Value
-40 to 85 oC -55 to 125 oC Unit
74HC
54HC
Min. Typ. Max. Min. Max. Min. Max.
tTLH Output Transition 2.0
tTHL Time
4.5
30 75
8
15
95
110
19
22
ns
6.0
7
13
16
19
tPLH Propagation
2.0
tPHL Delay Time
4.5
(CLOCK - Q)
6.0
48 150
190
225
16 30
38
45
ns
13 26
32
38
tPLH Propagation
2.0
tPHL Delay Time
4.5
(CL, PR - Q)
6.0
51 150
190
225
17 30
38
45
ns
15 26
32
38
fMAX Maximum Clock 2.0
Frequency
4.5
6.2 21
5
4.2
31 63
25
21
MHz
6.0
37 67
30
25
tW(H) Minimum Pulse 2.0
tW(L) Width
4.5
(CLOCK)
6.0
18 75
6
15
6
13
95
110
19
22
ns
16
19
tW(L) Minimum Pulse 2.0
Width
4.5
(CL, PR)
6.0
21 75
7
15
6
13
95
110
19
22
ns
16
19
ts
Minimum Set-up 2.0
Time
4.5
15 75
4
15
95
110
19
22
ns
6.0
3
13
16
19
th
Minimum Hold
2.0
Time
4.5
0
0
0
0
0
0
ns
6.0
0
0
0
tREM Minimum
2.0
Removal Time
4.5
(CL, PR)
6.0
0
25
30
35
0
5
6
7
ns
0
4
5
6
CIN Input Capacitance
5
10
10
10 pF
CPD (*) Power Dissipation
34
Capacitance
pF
(*) 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 operting current can be obtained by the following equation. ICC(opr) = CPD •VCC •fIN + ICC/2 (per FLIP/FLOP)
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