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Part Name
Description
HD74HC85 View Datasheet(PDF) - Hitachi -> Renesas Electronics
Part Name
Description
MFG CO.
HD74HC85
4-Bit Magnitude Comparator
Hitachi -> Renesas Electronics
HD74HC85 Datasheet PDF : 9 Pages
1
2
3
4
5
6
7
8
9
HD74HC85
Function Table
Data Word Inputs
A
3
, B
3
A
3
> B
3
A
3
< B
3
A
3
= B
3
A
3
= B
3
A
3
= B
3
A
3
= B
3
A
3
= B
3
A
3
= B
3
A
3
= B
3
A
3
= B
3
A
3
= B
3
A
3
= B
3
A
3
= B
3
A
2
, B
2
X
X
A
2
> B
2
A
2
< B
2
A
2
= B
2
A
2
= B
2
A
2
= B
2
A
2
= B
2
A
2
= B
2
A
2
= B
2
A
2
= B
2
A
2
= B
2
A
2
= B
2
A
1
, B
1
X
X
X
X
A
1
> B
1
A
1
< B
1
A
1
= B
1
A
1
= B
1
A
1
= B
1
A
1
= B
1
A
1
= B
1
A
1
= B
1
A
1
= B
1
A
0
, B
0
X
X
X
X
X
X
A
0
> B
0
A
0
< B
0
A
0
= B
0
A
0
= B
0
A
0
= B
0
A
0
= B
0
A
0
= B
0
Cascading Inputs
A > Bin A = Bin
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
L
L
L
L
H
L
H
L
X
H
A < Bin
X
X
X
X
X
X
X
X
L
H
L
H
X
Outputs
A > Bout A = Bout A < Bout
H
L
L
L
L
H
H
L
L
L
L
H
H
L
L
L
L
H
H
L
L
L
L
H
H
L
H
L
L
H
H
L
L
L
L
L
L
H
L
Pin Arrangement
B
3
Data 1
Input
A<B 2
A=B 3
A>B 4
A>B 5
A=B 6
A<B 7
GND 8
B
3
A<B
A
3
A=B In B
2
A>B
A
2
A>B
A
1
A=B
out
B
1
A<B
A
0
B
0
(Top view)
16 V
CC
15 A
3
14 B
2
13 A
2
12 A
1
11 B
1
10 A
0
9 B
0
2
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