IN74ACT161
TIMING REQUIREMENTS (VCC=5.0V±10%, CL=50pF,Input tr=tf=3.0 ns)
Symbol
Parameter
tSU
Minimum Setup Time, Preset Data Inputs to
Clock (Figure 4)
th
Minimum Hold Time, Clock to Preset Data Inputs
(Figure 4)
tSU
Minimum Setup Time,Load to Clock (Figure 4)
th
Minimum Hold Time, Clock to Load (Figure 4)
tSU
Minimum Setup Time, Enable T or Enable P to
Clock (Figure 5)
th
Minimum Hold Time, Clock to Enable T or
Enable P (Figure 5)
tw
Minimum Pulse Width, Clock (Load) (Figure 1)
tw
Minimum Pulse Width, Clock (Count)(Figure 1)
tw
Minimum Pulse Width, Reset (Figure 2)
trec
Minimum Recovery Time, Reset to Clock (Figure
2)
Guaranteed Limit
+25° C
-40° C
Unit
to +85° C
9.5
11.5
ns
0
0
ns
8.5
9.5
ns
-0.5
-0.5
ns
5.5
6.5
ns
0
0
ns
3.0
3.5
ns
3.0
3.5
ns
3.0
7.5
ns
0
0.5
ns
Rev. 00