Casio QT-2100 Service Manual page 65

2. HD74HCT1G08CME (IC45,46)
1
IN B
2
IN A
GND
3
4. HD74LV07 (IC19,22)
1A 1
2
1Y
3
2A
4
2Y A
3A 5
6
3Y
GND 7
6. HD74L1G00 (IC18)
IN B 1
2
IN A
3
GND
8. HD74LV86 (IC27)
1
1A
2
1B
3
1Y
A
4
2A
B
5
2B
6
2Y
7
GND
5 V
CC
4
OUT Y
14 V
CC
13
6A
12
6Y
11 5A
Y
10 5Y
9 4A
8 4Y
5 V
CC
OUT Y
4
14 V
CC
13 4B
12
4A
11 4Y
Y
3B
10
9 3A
8 3Y
3. HD74LV00 (IC20,29)
1
1A
2
1B
3
1Y
A
2A 4
B
5
2B
6
2Y
7
GND
5. HD74LV10 (IC28)
1
1A
2
1B
3
2A
A
2B 4 B
C
5
2C
6
2Y
7
GND
7. HD74LV74 (IC24)
1
1CLR
CK
2
1D
PR CLR
3
1CK
Q
4
1PR
D
5
1Q
CLR PR
6
1Q
Q
7
GND
9. HD74LVC08 (IC23,25)
1
1A
2
1B
3
1Y
4
2A
5
2B
6
2Y
GND 7
— 63 —
14 V
CC
13
4B
12 4A
11 4Y
Y
3B
10
3A
9
8 3Y
14 V
CC
13
1C
12 1Y
11 3C
Y
3B
10
3A
9
8 3Y
14 V
CC
D
13
2CLR
12
2D
Q
2CK
11
2PR
10
CK
9 2Q
Q
8 2Q
14 V
CC
13
4B
12
4A
11 4Y
3B
10
3A
9
8 3Y