Casio EX-468

— 74 —
15. SN74LV244APWR (IC9)/ SN74LVC244APWR (IC27, 28)
14. SN74LV14APWR (IC8)
16. SN74LVC245APWR (IC29, 30)
11
12
13
14
15
16
17
18
19
20
V
CC
2G
1Y1
2A4
1Y2
2A3
1Y3
2A2
1Y4
2A1
1
2
3
4
5
6
7
8
9
10
1G
1A1
2Y4
1A2
2Y3
1A3
2Y2
1A4
2Y1
GND
FUNCTION TABLE
(each inverter)
INPUT
A
OUTPUT
Y
H L
L H
1
2
3
4
5
6
7
14
13
12
11
10
9
8
1A
1Y
2A
2Y
3A
3Y
GND
V
CC
6A
6Y
5A
5Y
4A
4Y
(TOP VIEW)
YA
1
1A 1Y
2
3
2A 2Y
4
5
3A 3Y
6
9
4A 4Y
8
11
5A 5Y
10
13
6A 6Y
12
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
LL
LH
HX
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