IN74AC161
TIMING REQUIREMENTS
(C
L
=50pF,Input t
r
=t
f
=3.0 ns)
V
CC*
Symbol
t
su
t
h
t
su
t
h
t
su
t
h
t
w
t
w
t
w
t
rec
*
Guaranteed Limit
+25° C
13.5
8.5
-1.0
0
11.5
7.5
0
0.5
6.0
4.5
0
0
3.5
2.5
4.0
3.0
5.5
4.5
-0.5
0
-40° C
to +85° C
16.0
10.5
-0.5
0
14.0
8.5
0
1.0
7.0
5.0
0
0.5
4.0
3.0
4.5
3.5
7.5
6.0
0
0.5
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Parameter
Minimum Setup Time, Preset Data Inputs to
Clock (Figure 4)
Minimum Hold Time, Clock to Preset Data Inputs
(Figure 4)
Minimum Setup Time,Load to Clock (Figure 4)
Minimum Hold Time, Clock to Load (Figure 4)
Minimum Setup Time, Enable T or Enable P to
Clock (Figure 5)
Minimum Hold Time, Clock to Enable T or
Enable P (Figure 5)
Minimum Pulse Width, Clock (Load) (Figure 1)
Minimum Pulse Width, Clock (Count)(Figure 1)
Minimum Pulse Width, Reset (Figure 2)
Minimum Recovery Time, Reset to Clock (Figure
2)
V
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
Voltage Range 3.3 V is 3.3 V
±0.3
V
Voltage Range 5.0 V is 5.0 V
±0.5
V
217
INTEGRAL [ INTEGRAL CORP. ]
