Bose Personalized Amplification System Troubleshooting Manual page 37

A
Y
1 A1
B
2 B1
3 Y1
4 A2
5 B2
6 Y2
7
GND
74HC00, Quad 2 Input Nand Gate
74LCX125 Quad Buffer
1A 1
2
1B
1Y 3
4
2A
2B 5
2Y 6
GND
7
DIR 1
A
0
2
A 3
1
A 4
2
A 5
3
A 6
4
A 7
5
A 8
6
9
A
7
10
GND
APPENDIX
Vcc 14
B4 13
A4 12
Y4 11
B3 10
A3 9
Y3 8
14 V
CC
PIN DESCRIPTION
13 4B
PIN NUMBER
12 4A
1, 4, 9, 12
11 4Y
2, 5, 10, 13
10 3B
3, 6, 8, 11
9 3A
7
8 3Y
14
74LV32 Quad AND Gate
PIN DESCRIPTION
20 V
CC
19
OE
PIN NUMBER
18
B
1
0
17 B
1
2, 3, 4, 5,
6, 7, 8, 9
16
B
2
10
15 B
3
18, 17, 16, 15,
14
B
4
14, 13, 12, 11
13
B
5
19
12 B
6
20
11 B
7
74LV245 Octal Bus Transciever
37
PIN CONFIGURATION
1A 1 14
V
CC
1B 2 13 4B
1Y 3 12 4A
2A 4 11 4Y
2B 5 10 3B
2Y 6 9 3A
GND 7 8 3Y
74LV08 Quad AND Gate
Pin A ssign ment s for SOIC and DIP
Top View
CD4093BC Quad NAND Gate
SYMBOL NAME AND FUNCTION
1A ± 4A Data inputs
1B ± 4B Data inputs
1Y ± 4Y Data Outputs
GND Ground (0 V)
V Positive supply voltage
CC
SYMBOL FUNCTION
DIR Direction
A to A Data inputs/outputs
0 7
GND Ground (0 V)
B to B Data inputs/outputs
0 7
OE Output enable input (active LOW)
V Positive supply voltage
CC
LOGIC SYMBOL
1A
1
1Y
3
1B
2
2A
4
2Y
6
2B
5
3A
9
3Y
8
3B
10
4A
12
4Y
11
4B
13