74F191DCQB NSC [National Semiconductor], 74F191DCQB Datasheet - Page 5

• Manufacturer Part Number: 74F191DCQB
• Description: Up/Down Binary Counter with Preset and Ripple Clock
• Manufacturer: NSC [National Semiconductor]

Symbol
f
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
max
PLH
PHL
PLH
PHL
PLH
PHL
PLH
PHL
PLH
PHL
PLH
PHL
PLH
PHL
PLH
PHL
PLH
PHL
PLH
PHL
PLH
PHL
PLH
PHL
AC Electrical Characteristics
Maximum Count Frequency
Propagation Delay
CP to Q
Propagation Delay
CP to TC
Propagation Delay
CP to RC
Propagation Delay
CE to RC
Propagation Delay
U D to RC
Propagation Delay
U D to TC
Propagation Delay
P
Propagation Delay
PL to Q
Propagation Delay
P
Propagation Delay
P
Propagation Delay
PL to TC
Propagation Delay
PL to RC
n
n
n
to Q
to TC
to RC
n
n
n
Parameter
10 0
Min
100
3 0
5 0
6 0
5 0
3 0
3 0
3 0
3 0
7 0
5 5
4 0
4 0
3 0
6 0
5 0
5 5
5 0
6 5
6 5
6 0
8 0
6 0
9 0
V
T
C
CC
A
L
e a
e
e a
10 0
11 0
10 0
74F
Typ
125
5 5
8 5
8 5
5 5
5 0
5 0
5 5
9 0
7 0
6 5
4 5
8 5
9 0
50 pF
25 C
5 0V
5
Max
11 0
13 0
11 0
18 0
12 0
10 0
10 0
13 0
11 0
12 0
14 0
13 0
19 0
14 0
16 5
13 5
20 0
15 5
7 0
7 0
7 5
7 5
7 0
7 0
Min
T
3 0
5 0
6 0
3 0
3 0
3 0
3 0
7 0
5 5
4 0
3 0
6 0
5 0
5 5
5 0
4 0
75
C
A
L
V
e
54F
CC
50 pF
e
Max
13 5
16 5
13 5
22 0
14 0
13 5
12 5
16 0
13 0
14 5
9 5
9 5
9 0
9 0
9 0
9 0
Mil
T
10 0
Min
3 0
5 0
6 0
5 0
3 0
3 0
3 0
3 0
7 0
5 5
4 0
4 0
3 0
6 0
5 0
5 5
5 0
6 0
6 5
6 0
8 0
6 0
9 0
A
90
C
L
V
CC
e
74F
50 pF
e
Com
Max
12 0
14 0
12 0
20 0
13 0
11 0
11 0
14 0
12 0
13 0
15 0
14 0
20 0
15 0
17 5
14 5
21 0
16 0
8 5
8 5
8 0
8 0
8 0
8 0
Units
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns