IN74HC161A
TIMING REQUIREMENTS (CL=50pF,Input tr=tf=6.0 ns)
VCC
Guaranteed Limit
Symbol
Parameter
V
Unit
25 °C ≤85°C ≤125°
to
-55°C
40
15
12
60
15
12
80
20
17
3
C
tSU
tSU
tSU
th
Minimum Setup Time, Preset Data Inputs 2.0
60
20
18
75
20
18
95
25
23
3
80
30
20
90
30
20
110
35
25
3
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
to Clock (Figure 4)
4.5
6.0
Minimum Setup Time, Load to Clock 2.0
(Figure 4)
4.5
6.0
Minimum Setup Time, Enable T or 2.0
Enable P to Clock (Figure 5)
4.5
6.0
Minimum Hold Time, Clock to Load or 2.0
Preset Data Inputs (Figure 4)
4.5
6.0
3
3
3
3
3
3
th
Minimum Hold Time, Clock to Enable T 2.0
3
3
3
or Enable P (Figure 5)
4.5
6.0
3
3
3
3
3
3
trec
trec
tw
Minimum Recovery Time, Reset Inactive 2.0
80
15
12
80
15
12
60
12
10
60
12
10
95
20
17
95
20
17
75
15
13
75
15
13
1000
500
400
110
26
23
110
26
23
90
18
15
90
18
15
1000
500
400
to Clock (Figure 2)
4.5
6.0
Minimum Recovery Time, Load Inactive 2.0
to Clock (Figure 4)
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
Minimum Pulse Width, Clock (Figure 1)
tw
Minimum Pulse Width, Reset (Figure 2)
tr, tf
Maximum Input Rise and Fall Times 2.0 1000
(Figure 1)
4.5
6.0
500
400
5