m74hc161 STMicroelectronics, m74hc161 Datasheet - Page 5

• Manufacturer Part Number: m74hc161
• Description: Synchronous Presettable 4-bit Counter
• Manufacturer: STMicroelectronics

AC ELECTRICAL CHARACTERISTICS (C
t
t
t
t
Symbol
TLH
PLH
PLH
PLH
t
t
f
t
t
t
t
MAX
W(H)
W(L)
W(L)
REM
PLH
PHL
t
t
t
s
s
h
t
t
t
t
THL
PHL
PHL
PHL
Output Transition
Time
Propagation Delay
Time
Propagation Delay
Time
(CLOCK - CARRY)
Propagation Delay
Time
(TE - CARRY)
Propagation Delay
Time
(CLEAR - Q)
Propagation Delay
Time
(CLEAR - CARRY)
Maximum Clock
Frequency
Minimum Pulse
Width (CLOCK)
Minimum Pulse
Width (CLEAR)
Minimum Set-up
Time
(LOAD, PE, TE)
Minimum Set-up
Time
(A, B, C, D)
Minimum Hold
Time
(A, B - CLOCK)
Minimum Removal
Time
(CLOCK - Q)
Parameter
V
(V)
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
CC
Test Condition
L
= 50 pF, Input t
Min.
6.2
31
37
T
A
r
Typ.
= 25°C
25
48
16
14
57
19
16
39
13
60
20
17
72
24
20
18
53
62
18
24
40
10
20
18
11
= t
7
6
6
6
7
6
8
5
3
4
3
f
= 6ns)
Max.
125
150
100
150
200
100
75
15
13
25
21
30
26
20
17
30
26
40
34
75
15
13
75
15
13
20
17
75
15
13
50
10
0
0
0
9
Value
-40 to 85°C
Min.
25
30
5
Max.
155
190
125
190
250
125
95
19
16
31
26
38
32
25
21
38
32
50
43
95
19
16
95
19
16
25
21
95
19
16
65
13
11
0
0
0
-55 to 125°C
Min.
4.2
21
25
M74HC161
Max.
190
225
150
225
300
150
110
110
110
110
22
19
38
32
45
38
30
26
45
38
60
51
22
19
22
19
30
26
22
19
75
15
13
0
0
0
MHz
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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