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Casio QT-6100 - Page 83

Casio QT-6100
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— 81
6. HD74LVC08 (IC20)
8. HD74LVC244 (IC4,5)
11
12
13
14
V
CC
4B
4A
4Y
3B
3A
1
2
3
4
5
6
7
8
9
10
1A
GND
1B
1Y
2A
2B
2Y
3Y
11
12
13
14
V
CC
1
2
3
4
5
6
7
10
A
GND
8
9
15
16
A
B
C
Y
7
G
1
G
2B
G
2A
Y
0
Y
1
Y
2
Y
3
Y
4
Y
5
B
C
G
2A
G
2B
G
1
Y
7
Y
6
Y
5
Y
4
Y
3
Y
2
Y
1
Y
0
Y
6
7. HD74LVC138 (IC11)
1
1G
1A1
2Y4
1A2
2Y3
1A3
2Y2
1A4
2Y1
GND
Vcc
2G
1Y1
2A4
1Y2
2A3
1Y3
2A2
1Y4
2A1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
Inputs
G
A
H X
L H
L L
Output Y
Z
H
L
H : High
L�: Low
X�:
Don’t care
Z�:
High impedance
1
T/R
A0
A1
A2
A3
A4
A5
A6
A7
GND
Vcc
OE
B0
B1
B2
B3
B4
B5
B6
B7
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
Inputs
OE T / R
L L
L H
H X
Output
Y
Bus B Data to Bus
A
Bus A Data to Bus B
Z
H : High
L :
Low
X :
Don t care
Z :
High impedance
9. HD74LVC245 (IC6,7)

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