參數(shù)資料
型號(hào): IN74HC161A
廠商: INTEGRAL JOINT STOCK COMPANY
元件分類: 通用總線功能
英文描述: PRESETTABLE COUNTERS
中文描述: 預(yù)置計(jì)數(shù)器
文件頁數(shù): 5/9頁
文件大小: 189K
代理商: IN74HC161A
IN74HC161A
5
TIMING REQUIREMENTS
(C
L
=50pF,Input t
r
=t
f
=6.0 ns)
Symbol
Parameter
V
CC
V
Guaranteed Limit
25
°
C
to
-55
°
C
40
15
12
18
60
15
12
18
80
20
17
23
3
3
3
3
3
3
80
15
12
17
80
15
12
17
60
12
10
13
60
12
10
13
1000
500
400
400
85
°
C
125
°
C
Unit
t
SU
Minimum Setup Time, Preset Data Inputs
to Clock (Figure 4)
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
60
20
80
30
20
90
30
20
110
35
25
3
3
3
3
3
3
110
26
23
110
26
23
90
18
15
90
18
15
1000
500
400
ns
t
SU
Minimum Setup Time, Load to Clock
(Figure 4)
75
20
ns
t
SU
Minimum Setup Time, Enable T or
Enable P to Clock (Figure 5)
95
25
ns
t
h
Minimum Hold Time, Clock to Load or
Preset Data Inputs (Figure 4)
3
3
3
3
3
3
95
20
ns
t
h
Minimum Hold Time, Clock to Enable T
or Enable P (Figure 5)
ns
t
rec
Minimum Recovery Time, Reset Inactive
to Clock (Figure 2)
ns
t
rec
Minimum Recovery Time, Load Inactive
to Clock (Figure 4)
95
20
ns
t
w
Minimum Pulse Width, Clock (Figure 1)
75
15
ns
t
w
Minimum Pulse Width, Reset (Figure 2)
75
15
ns
t
r,
t
f
Maximum Input Rise and Fall Times
(Figure 1)
1000
500
ns
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