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1
AMP 2
2
AMP 1
3
4
NJM78L05 Op-Amp
V
CC
16
S
11
0
S
10
1
LOGIC
LEVEL
CONVERSION
S
9
2
E
6
8
7
GND
V
EE
TOP VIEW
A4
1
16
CHANNEL
IN/OUT
A6
2
15
COM OUT/IN
A
3
14
A7
4
13
CHANNEL
IN/OUT
A5
5
12
E
6
11
V
7
10
EE
GND
8
9
APPENDIX
8
7
6
5
CHANNEL IN/OUT
A
A
A
A
7
6
5
4
2
5
BINARY
TO
1 OF 8
DECODER
WITH
ENABLE
ENABLE
L
L
V
CC
A2
L
A1
CHANNEL
L
IN/OUT
A0
A3
L
S0
L
ADDRESS
S1
SELECT
L
S2
L
H
X = Don't Care
CD74HC4051 Analog Multiplexer
40
1
2
PC817A Photocoupler
A
A
A
A
4
3
2
1
0
1
12
15
14
13
TG
TG
TG
TG
TG
TG
TG
TG
Functional Dia gram
TRUTH TABLE
INPUT STATES
S
S
S
2
1
0
L
L
L
L
L
H
L
H
L
L
H
H
H
L
L
H
L
H
H
H
L
H
H
H
X
X
X
Anode
1
4
Cathode
2
Emitter
3
3
Collector
4
A
3
COMMON
OUT/IN
ÒONÓ
CHANNELS
A0
A1
A2
A3
A4
A5
A6
A7
None
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