CD54AC191 Datasheet, PDF (5/10 Pages) Texas Instruments – Presettable Synchronous 4-Bit Binary Up/Down Counter

CD54AC191, CD54ACT191
Prerequisite For Switching Function
PARAMETER
AC TYPES
Max. Frequency
CP Pulse Width
PL Pulse Width
Recovery Time
Set-Up Time, Pn to PL
Set-Up Time, CE to CP
Set-Up Time, U/D to CP
Hold Time, Pn to PL
Hold Time, CE to CP
Hold Time, U/D to CP
ACT TYPES
Max. Frequency
CP Pulse Width
PL Pulse Width
Recovery Time
Set-Up Time, Pn to PL
SYMBOL
V_CC (V)
f_MAX
(Note 10)
t_W
t_W
t_REC
t_SU
t_SU
t_SU
t_H
t_H
t_H
1.5
3.3
(Note 8)
5
(Note 9)
1.5
3.3
5
1.5
3.3
5
1.5
3.3
5
1.5
3.3
5
1.5
3.3
5
1.5
3.3
5
1.5
3.3
5
1.5
3.3
5
1.5
3.3
5
f_MAX
(Note 10)
t_W
t_W
t_REC
t_SU
5
(Note 9)
5
5
5
5
-40^oC TO 85^oC
MIN
MAX
-55^oC TO 125^oC
MIN
MAX
UNITS
5.5
-
4.8
-
MHz
49
-
43
-
MHz
68
-
60
-
MHz
91
-
104
-
ns
10.5
-
11.6
-
ns
7.3
-
8.3
-
ns
66
-
75
-
ns
7.4
-
8.4
-
ns
5.3
-
6
-
ns
71
-
81
-
ns
8
-
9.1
-
ns
5.7
-
6.5
-
ns
44
-
50
-
ns
4.9
-
5.6
-
ns
3.5
-
4
-
ns
115
-
131
-
ns
12.9
-
14.7
-
ns
9.2
-
10.5
-
ns
132
-
150
-
ns
14.7
-
16.8
-
ns
10.5
-
12
-
ns
22
-
25
-
ns
2.5
-
2.8
-
ns
2
-
2
-
ns
0
-
0
-
ns
0
-
0
-
ns
0
-
0
-
ns
0
-
0
-
ns
0
-
0
-
ns
0
-
0
-
ns
68
-
60
-
MHz
7.3
-
8.3
-
ns
5.3
-
6
-
ns
5.7
-
6.5
-
ns
3.5
-
4
-
ns
5