Casio QT 6000 Service Manual - Page 101
Sn74lv08apwr Ic47,57, Sn74lv10apwr Ic23, Sn74lv244apwr Ic22,38,39, Sn74lv32apwr Ic48,52~54
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22. SN74LV08APWR (IC47,57) 1A 1 1B 2 1Y 3 2A 4 2B 5 2Y 6 GND 7 14 VCC 13 4B 12 4A 11 4Y 10 3B 9 3A 8 3Y 24. SN74LV244APWR (IC22,38,39) 23. SN74LV10APWR (IC23) 1A 1 1B 2 2A 3 A 2B 4 B C 2C 5 2Y 6 GND 7 14 VCC 13 1C 12 1Y Y 11 3C 10 3B 9 3A 8 3Y 1G 1 1A1 2 2Y4 3 1A2 4 2Y3 5 1A3 6 2Y2 7 1A4 8 2Y1 9 GND 10 20 Vcc 19 2G 18 1Y1 17 2A4 16 1Y2 15 2A3 14 1Y3 13 2A2 12 1Y4 11 2A1 25. SN74LV32APWR (IC48,52~54) Inputs G A H X L H L L H : High L : Low X : Don't care Z : High impedance 1A 1 1B 2 1Y 3 2A 4 2B 5 2Y 6 GND 7 14 VCC 13 4B 12 4A 11 4Y 10 3B 9 3A 8 3Y Output Y Z H L - 99 -
— 99 —
22.
SN74LV08APWR (IC47,57)
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
23.
SN74LV10APWR (IC23)
11
12
13
14 V
CC
1C
1Y
3C
3B
3A
1
2
3
4
5
6
7
8
9
10
1A
GND
1B
2A
2B
2C
2Y
3Y
A
B
Y
C
24.
SN74LV244APWR (IC22,38,39)
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
25.
SN74LV32APWR (IC48,52~54)
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