Casio FE-700 MEX Service Manual page 31

9. TC74HC245AP (IC8)
DIR 1
2
A1
3
A2
4
A3
5
A4
6
A5
7
A6
8
A7
9
A8
10
GND
(Topview)
10. TC74HC367AP (IC7,9,10,23-25)
Output
1
Control G
1
1A 2
1Y 3
4
2A
2Y 5
3A 6
3Y 7
GND 8
11. TC74HC373AP (IC13)
Output
1 20
Control
1Q 2 19
Q Q
OE OE
G D G D
1D 3 18
2Q 4 17
D D
G G
OE OE
2D 5 Q Q 16
3Q 6 15
Q Q
OE OE
G D G D
3D 7 14
4Q 8 13
G D G D
OE OE
Q Q
4D 9 12
GND 10 11
20 VCC
19 G
18
B1
17 B2
16
B3
15
B4
14
B5
13
B6
12 B7
11
B8
16 Vcc
Output
15
Control G
2
14
6A
13
6Y
12 5A
11 5Y
10 4A
9 4Y
Vcc
1Q 2Q
8D
8Q
7D
Q
7Q
D G D G
6D
6Q
5D
Output 1D 2D
5Q
Control
Enable
G
— 29 —
Inputs
Output Y
G DIR DIR
L L Bus B Data to Bus A
L H
Bus A Data to Bus B
H X
3Q 4Q 5Q 6Q
Q Q Q Q Q
D G D G D G D G
3D 4D 5D 6D
Z
7Q 8Q
Q Q
D G D G
7D 8D Enable
G