dm74191n National Semiconductor Corporation, dm74191n Datasheet - Page 3

• Manufacturer Part Number: dm74191n
• Description: Synchronous Up/down 4-bit Binary Counter With Mode Control
• Manufacturer: National Semiconductor Corporation

Switching Characteristics
Symbol
f
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
Maximum Clock Frequency
Propagation Delay Time
Low to High Level Output
Propagation Delay Time
High to Low Level Output
Propagation Delay Time
Low to High Level Output
Propagation Delay Time
High to Low Level Output
Propagation Delay Time
Low to High Level Output
Propagation Delay Time
High to Low Level Output
Propagation Delay Time
Low to High Level Output
Propagation Delay Time
High to Low Level Output
Propagation Delay Time
Low to High Level Output
Propagation Delay Time
High to Low Level Output
Propagation Delay Time
Low to High Level Output
Propagation Delay Time
High to Low Level Output
Propagation Delay Time
Low to High Level Output
Propagation Delay Time
High to Low Level Output
Propagation Delay Time
Low to High Level Output
Propagation Delay Time
High to Low Level Output
Parameter
at V
CC
e
5V and T
From (Input)
Down Up to
Down Up to
Down Up to
Down Up to
Enable G to
Enable G to
To (Output)
Ripple Carry
Ripple Carry
Ripple Carry
Ripple Carry
Ripple Carry
Ripple Carry
Max Min
Max Min
Max Min
Max Min
Clock to
Clock to
Clock to
Clock to
Clock to
Clock to
Load to
Load to
Data to
Data to
Any Q
Any Q
Any Q
Any Q
Any Q
Any Q
3
A
e
25 C (See Section 1 for Test Waveforms and Output Load)
R
Min
20
L
e
400X C
L
e
15 pF
Max
33
70
22
70
20
24
24
36
42
52
45
45
33
33
24
24
Units
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns