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SN74LS85D View Datasheet(PDF) - ON Semiconductor

Part Name
Description
MFG CO.
SN74LS85D
4−Bit Magnitude Comparator
ON-Semiconductor
ON Semiconductor 
SN74LS85D Datasheet PDF : 7 Pages
1 2 3 4 5 6 7
(15)
A3
B3 (1)
SN74LS85
LOGIC DIAGRAM
(13)
A2
B2
(14)
A<B
A=B
A>B
(2)
(3)
(4)
(12)
A1
B1 (11)
(10)
A0
B0 (9)
(5)
OA>B
(6)
OA=B
(7)
OA<B
TRUTH TABLE
COMPARING INPUTS
CASCADING
INPUTS
A3,B3
A3>B3
A3<B3
A3=B3
A3=B3
A3=B3
A3=B3
A3=B3
A3=B3
A3=B3
A3=B3
A3=B3
A3=B3
A3=B3
A2,B2
X
X
A2>B2
A2<B2
A2=B2
A2=B2
A2=B2
A2=B2
A2=B2
A2=B2
A2=B2
A2=B2
A2=B2
A1,B1
X
X
X
X
A1>B1
A1<B1
A1=B1
A1=B1
A1=B1
A1=B1
A1=B1
A1=B1
A1=B1
A0,B0
X
X
X
X
X
X
A0>B0
A0<B0
A0=B0
A0=B0
A0=B0
A0=B0
A0=B0
IA>B
X
X
X
X
X
X
X
X
H
L
X
H
L
IA<B
X
X
X
X
X
X
X
X
L
H
X
H
L
IA=B
X
X
X
X
X
X
X
X
L
L
H
L
L
OUTPUTS
OA>B
H
L
H
L
H
L
H
L
H
L
L
L
H
OA<B
L
H
L
H
L
H
L
H
L
H
L
L
H
OA=B
L
L
L
L
L
L
L
L
L
L
H
L
L
H = HIGH Level
L = LOW Level
X = IMMATERIAL
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