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54LS161 View Datasheet(PDF) - National ->Texas Instruments

Part NameDescriptionManufacturer
54LS161 Synchronous 4-Bit Binary Counters National-Semiconductor
National ->Texas Instruments National-Semiconductor
54LS161 Datasheet PDF : 12 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
’LS161 Switching Characteristics
at VCC e 5V and TA e 25 C (See Section 1 for Test Waveforms and Output Load) (Continued)
Symbol
Parameter
From (Input)
To (Output)
RL e 2 kX
CL e 15 pF
CL e 50 pF
Min
Max
Min
Max
tPLH
Propagation Delay Time
Clock to Any Q
24
30
Low to High Level Output
(Load Low)
tPHL
Propagation Delay Time
Clock to Any Q
27
38
High to Low Level Output
(Load Low)
tPLH
Propagation Delay Time
Enable T to
14
27
Low to High Level Output
Ripple Carry
tPHL
Propagation Delay Time
Enable T to
15
27
High to Low Level Output
Ripple Carry
tPHL
Propagation Delay Time
Clear to
High to Low Level Output
Any Q
28
45
Recommended Operating Conditions
Symbol
Parameter
VCC
Supply Voltage
VIH
High Level Input Voltage
VIL
Low Level Input Voltage
IOH
High Level Output Current
IOL
Low Level Output Current
fCLK
Clock Frequency (Note 1)
Clock Frequency (Note 2)
tW
Pulse Width
Clock
(Note 1)
Clear
Pulse Width
(Note 2)
Clock
Clear
tSU
Setup Time
Data
(Note 1)
Enable P
Load
Setup Time
(Note 2)
Data
Enable P
Load
tH
Hold Time
Data
(Note 1)
Others
Hold Time
(Note 2)
Data
Others
tREL
Clear Release Time (Note 1)
Clear Release Time (Note 2)
TA
Free Air Operating Temperature
Note 1 CL e 15 pF RL e 2 kX TA e 25 C and VCC e 5V
Note 2 CL e 50 pF RL e 2 kX TA e 25 C and VCC e 5V
DM54LS163A
Min
Nom
Max
45
5
55
2
07
b0 4
4
0
25
0
20
20
6
20
9
25
25
20
8
25
17
25
15
20
30
30
0
b3
0
b3
5
5
20
25
b55
125
DM74LS163A
Min
Nom
Max
4 75
5
5 25
2
08
b0 4
8
0
25
0
20
20
6
20
9
25
25
20
8
25
17
25
15
20
30
30
0
b3
0
b3
5
5
20
25
0
70
Units
ns
ns
ns
ns
ns
Units
V
V
V
mA
mA
MHz
MHz
ns
ns
ns
ns
ns
ns
ns
ns
C
4
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