21
AVR-1705/685
LH28F800BJE (IC805)
SN74LV573APW (IC818,819)
SN74LVC139APWR (IC820)
1
2
3
4
5
6
7
8
10
9
20
19
18
17
16
15
14
13
12
11
OE
D0
D1
D2
D3
D4
D5
D6
D7
GND
Vcc
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
LE
D
Q
L
D
Q
L
D
Q
L
D
Q
L
D
Q
L
D
Q
L
D
Q
L
D
Q
L
D0
D1
D2
D3
D4
D5
D6
D7
L
E
OE
1
2
3
4
5
6
7
8
9
11
12
13
14
15
16
17
18
19
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
16
15
14
13
12
11
10
9
V
CC
2G
2A
2B
2Y0
2Y1
2Y2
2Y3
FUNCTION TABLE
(each decoder/demultiplexer)
INPUTS
OUTPUTS
G
SELECT
OUTPUTS
G
B
A
Y3
Y2
Y1
Y0
L
L
L
H
H
H
L
L
L
H
H
H
L
H
L
H
L
H
L
H
H
L
H
H
L
H
H
H
H
X
X
H
H
H
H
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QQ 376315150
9
9
2
8
9
4
2
9
8
TEL 13942296513
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
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