參數(shù)資料
型號(hào): HC161
廠商: System Logic Semiconductor Co., Ltd.
元件分類(lèi): 通用總線功能
英文描述: Presettable Counters
中文描述: 可預(yù)置計(jì)數(shù)器
文件頁(yè)數(shù): 5/9頁(yè)
文件大?。?/td> 85K
代理商: HC161
SL74HC161
S ystem Logic
Semiconductor
SLS
TIMING REQUIREMENTS
(C
L
=50pF,Input t
r
=t
f
=6.0 ns)
V
CC
Guaranteed Limit
Symbol
Parameter
V
25
°
C to
-55
°
C
85
°
C
125
°
C
Unit
t
SU
Minimum Setup Time, Preset Data Inputs to Clock
(Figure 4)
2.0
4.5
6.0
40
15
12
60
20
18
80
30
20
ns
t
SU
Minimum Setup Time, Load to Clock
(Figure 4)
2.0
4.5
6.0
60
15
12
75
20
18
90
30
20
ns
t
SU
Minimum Setup Time, Enable T or Enable P to
Clock (Figure 5)
2.0
4.5
6.0
80
20
17
95
25
23
110
35
25
ns
t
h
Minimum Hold Time, Clock to Load or Preset Data
Inputs (Figure 4)
2.0
4.5
6.0
3
3
3
3
3
3
3
3
3
ns
t
h
Minimum Hold Time, Clock to Enable T or Enable
P (Figure 5)
2.0
4.5
6.0
3
3
3
3
3
3
3
3
3
ns
t
rec
Minimum Recovery Time, Reset Inactive to Clock
(Figure 2)
2.0
4.5
6.0
80
15
12
95
20
17
110
26
23
ns
t
rec
Minimum Recovery Time, Load Inactive to Clock
(Figure 4)
2.0
4.5
6.0
80
15
12
95
20
17
110
26
23
ns
t
w
Minimum Pulse Width, Clock (Figure 1)
2.0
4.5
6.0
60
12
10
75
15
13
90
18
15
ns
t
w
Minimum Pulse Width, Reset (Figure 2)
2.0
4.5
6.0
60
12
10
75
15
13
90
18
15
ns
t
r,
t
f
Maximum Input Rise and Fall Times
(Figure 1)
2.0
4.5
6.0
1000
500
400
1000
500
400
1000
500
400
ns
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