參數(shù)資料
型號: M74HC161RM13TR
廠商: 意法半導(dǎo)體
元件分類: 通用總線功能
英文描述: SYNCHRONOUS PRESETTABLE 4-BIT COUNTER
中文描述: 同步預(yù)置4位計(jì)數(shù)器
文件頁數(shù): 5/12頁
文件大?。?/td> 961K
代理商: M74HC161RM13TR
M74HC161
5/12
AC ELECTRICAL CHARACTERISTICS
(C
L
= 50 pF, Input t
r
= t
f
= 6ns)
Symbol
Parameter
Test Condition
Value
Unit
V
CC
(V)
T
A
= 25°C
-40 to 85°C
-55 to 125°C
Min.
Typ.
Max.
Min.
Max.
Min.
Max.
t
TLH
t
THL
Output Transition
Time
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
25
7
6
48
16
14
57
19
16
39
13
11
60
20
17
72
24
20
18
53
62
18
6
6
24
7
6
40
10
8
20
5
3
75
15
13
125
25
21
150
30
26
100
20
17
150
30
26
200
40
34
95
19
16
155
31
26
190
38
32
125
25
21
190
38
32
250
50
43
110
22
19
190
38
32
225
45
38
150
30
26
225
45
38
300
60
51
ns
t
PLH
t
PHL
Propagation Delay
Time
(CLOCK - Q)
t
PLH
t
PHL
Propagation Delay
Time
(CLOCK - CARRY)
t
PLH
t
PHL
Propagation Delay
Time
(TE - CARRY)
t
PLH
Propagation Delay
Time
(CLEAR - Q)
t
PHL
Propagation Delay
Time
(CLEAR - CARRY)
f
MAX
Maximum Clock
Frequency
ns
ns
ns
ns
ns
6.2
31
37
5
4.2
21
25
MHz
25
30
t
W(H)
t
W(L)
Minimum Pulse
Width (CLOCK)
75
15
13
75
15
13
100
20
17
75
15
13
0
0
0
50
10
9
95
19
16
95
19
16
125
25
21
95
19
16
0
0
0
65
13
11
110
22
19
110
22
19
150
30
26
110
22
19
0
0
0
75
15
13
ns
t
W(L)
Minimum Pulse
Width (CLEAR)
ns
t
s
Minimum Set-up
Time
(LOAD, PE, TE)
Minimum Set-up
Time
(A, B, C, D)
Minimum Hold
Time
(A, B - CLOCK)
Minimum Removal
Time
ns
t
s
ns
t
h
ns
t
REM
18
4
3
ns
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