dm74ls161a National Semiconductor Corporation, dm74ls161a Datasheet - Page 4

• Manufacturer Part Number: dm74ls161a
• Description: Synchronous 4-bit Binary Counters
• Manufacturer: National Semiconductor Corporation

Symbol
V
V
V
I
I
f
t
t
t
t
T
’LS161 Switching Characteristics
at V
Recommended Operating Conditions
Note 1 C
Note 2 C
Symbol
t
t
t
t
t
OH
OL
CLK
W
SU
H
REL
PLH
PHL
PLH
PHL
PHL
A
CC
IH
IL
CC
e
L
L
e
e
5V and T
15 pF R
50 pF R
Supply Voltage
High Level Input Voltage
Low Level Input Voltage
High Level Output Current
Low Level Output Current
Clock Frequency (Note 1)
Clock Frequency (Note 2)
Pulse Width
(Note 1)
Pulse Width
(Note 2)
Setup Time
(Note 1)
Setup Time
(Note 2)
Hold Time
(Note 1)
Hold Time
(Note 2)
Clear Release Time (Note 1)
Clear Release Time (Note 2)
Free Air Operating Temperature
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
High to Low Level Output
L
L
A
e
e
e
Parameter
2 kX T
2 kX T
25 C (See Section 1 for Test Waveforms and Output Load) (Continued)
Parameter
A
A
e
e
25 C and V
25 C and V
Clock
Clear
Clock
Clear
Data
Enable P
Load
Data
Enable P
Load
Data
Others
Data
Others
CC
CC
e
e
5V
5V
Clock to Any Q
Clock to Any Q
From (Input)
To (Output)
Ripple Carry
Ripple Carry
Enable T to
Enable T to
(Load Low)
(Load Low)
Clear to
Any Q
b
Min
4 5
20
20
25
25
20
25
25
20
30
30
20
25
2
0
0
0
0
5
5
55
4
DM54LS163A
Nom
b
b
15
17
5
6
9
8
3
3
Min
C
L
e
b
Max
15 pF
125
5 5
0 7
25
20
4
0 4
Max
24
27
14
15
28
R
L
4 75
e
Min
20
20
25
25
20
25
25
20
30
30
20
25
2
0
0
0
0
5
5
0
2 kX
DM74LS163A
Min
C
Nom
L
b
b
17
15
5
6
9
8
e
3
3
50 pF
Max
30
38
27
27
45
b
Max
5 25
0 8
25
20
70
8
0 4
Units
Units
MHz
MHz
ns
ns
ns
ns
ns
mA
mA
ns
ns
ns
ns
ns
ns
ns
ns
V
V
V
C