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M74HC390 Datasheet(PDF) 10 Page - STMicroelectronics

Part # M74HC390
Description  Dual decade counter
PDF  17 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M74HC390 Datasheet(HTML) 10 Page - STMicroelectronics

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Electrical characteristics
M74HC390
10/17
Table 7. AC electrical characteristics (CL = 50 pF, Input tr = tf = 6ns)
Symbol
Parameter
Test condition
Value
Unit
VCC
(V)
TA = 25°C
-40 to 85°C
-55 to 125°C
Min
Typ
Max
Min
Max
Min
Max
tTLH tTHL
Output transition
time
2.0
30
75
95
110
ns
4.5
8
15
19
22
6.0
7
13
16
19
tPLH
tPHL
Propagation delay
time
(CLOCK A - QA)
2.0
42
120
150
180
ns
4.5
14
24
30
36
6.0
12
20
26
31
tPLH
tPHL
Propagation delay
time
(CLOCK A-
QB,QD)
2.0
45
120
150
180
ns
4.5
15
24
30
36
6.0
13
20
26
31
tPLH
tPHL
Propagation delay
time
(CLOCK A - QC)
2.0
QA Connected to CKB
108
280
350
420
ns
4.5
36
56
70
84
6.0
31
48
60
71
tPLH
tPHL
Propagation delay
time
(CLOCK B - QC)
2.0
72
185
230
280
ns
4.5
24
37
46
56
6.0
20
31
39
48
tPHL
Propagation delay
time (CLEAR -
Qn)
2.0
45
125
155
190
ns
4.5
15
25
31
38
6.0
13
21
26
32
fMAX
Maximum clock
frequency
(CLOCK A - QA)
2.0
8.4
17
6.8
5.6
MHz
4.5
42
65
34
28
6.0
50
79
40
33
fMAX
Maximum clock
frequency
(CLOCK B - QB)
2.0
8.4
17
6.8
5.6
MHz
4.5
42
67
34
28
6.0
50
79
40
33
tW(H)
tW(L)
Minimum pulse
width (CLOCK)
2.0
24
75
95
110
ns
4.5
6
15
19
22
6.0
5
13
16
19
tW(H)
Minimum pulse
width (CLEAR)
2.0
24
75
95
110
ns
4.5
6
15
19
22
6.0
5
13
16
19
tREM
Minimum removal
time
2.0
25
30
35
ns
4.5
5
6
7
6.0
5
5
6



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