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Part Name
Description
DM74LS181 View Datasheet(PDF) - Fairchild Semiconductor
Part Name
Description
Manufacturer
DM74LS181
4-Bit Arithmetic Logic Unit
Fairchild Semiconductor
DM74LS181 Datasheet PDF : 7 Pages
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Diff Mode Test Table 2
S1
=
S2
=
4.5V, S0
=
S3
=
M
=
0V
Input
Symbol
Under
Test
t
PLH
A
t
PHL
t
PLH
B
t
PHL
t
PLH
A
t
PHL
t
PLH
B
t
PHL
t
PLH
A
t
PHL
t
PLH
B
t
PHL
t
PLH
A
t
PHL
t
PLH
B
t
PHL
t
PLH
A
t
PHL
t
PLH
B
t
PHL
t
PLH
C
n
t
PHL
Function Inputs
Other Input
Same Bit
Apply
4.5V
Apply
GND
None
B
A
None
None
B
A
None
B
None
None
A
None
B
A
None
B
None
None
A
None
None
Other Data Inputs
Apply
4.5V
Remaining
A
Remaining
A
None
None
None
None
Remaining
A
Remaining
A
None
None
All
A and B
Apply
GND
Remaining
B, C
n
Remaining
B, C
n
Remaining
A and B, C
n
Remaining
A and B, C
n
Remaining
A and B, C
n
Remaining
A and B, C
n
Remaining
B, C
n
Remaining
B, C
n
Remaining
A and B, C
n
Remaining
A and B, C
n
None
Logic Mode Test Table 3 Function Inputs
S1
=
S2
=
M
=
4.5V, S0
=
S3
=
0V
Input
Symbol
Under
Test
Other Input
Same Bit
Apply
Apply
4.5V
GND
t
PLH
A
B
None
t
PHL
t
PLH
B
A
None
t
PHL
Other Data Inputs
Apply
4.5V
None
None
Apply
GND
Remaining
A and B, C
n
Remaining
A and B, C
n
Output
Under
Test
F
i
F
i
P
P
G
G
A
=
B
A
=
B
C
n
+
4
C
n
+
4
C
n
+
4
Output
Under
Test
Any F
Any F
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6
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