1
2
3
4
5
6
7
1A
1Y
2A
2Y
3A
3Y
Vss
14
13
12
11
10
9
8
VDD
6A
6Y
5A
5Y
4A
4Y
SN74HCU04NSR (XW842A00)
SN74HCU04N (IG142250)
Hex Inverter
DM:
AM:
HD74LV08AFPEL (IS000800)
Quad 2 Input AND
DM: IC101
HD74LV21ATELL (X0010A00)
Dual 4 Input AND
DM: IC310
SN74HC132NSR (XW792A00)
MM74HC132SJX (XY352A00)
Quad 2 Input NAND
DM: IC914
SN74HCT138NSR (XY865A00)
3 to 8 Demultiplexer
DM: IC600
HD74LVC139FPEL (XS048A00)
Dual 2 to 4 Demultiplexer
DM: IC308
HD74LV245ATELL (XW744A00)
74LVC245APW (XZ286A00)
TC74VHCT245AFT (XT744A00)
Octal 3-State Bus Transceiver
DM: IC103, 104, 301-303, 304-306, 911
SN75C1168N (XU463A00)
Line Driver/Receiver
AM: IC307
M5227P (XF751A00)
5-Band Graphic Equalizer
AM: IC104, 105
IC510, 511
IC301
1
2
3
1A
1Y
4
2A
5
2B
6
2Y
VSS
7
1B
14
13
12
VDD
4A
11
4Y
10
3B
9
3A
8
3Y
4B
1
2
3
1A
NC
4
1C
5
1D
6
1Y
7
GND
1B
14
13
12
Vcc
2C
11
NC
10
2B
9
2A
8
2Y
2D
1
2
3
1A
1Y
4
2Y
5
2A
6
2B
7
GND
1B
14
13
12
VDD
4A
11
4Y
10
3Y
9
3B
8
3A
4B
1
2
3
4
5
6
7
A
B
C
G2A
G2B
G1
Y7
Y5
Y4
Y3
Y2
Y1
Y0
Y6
16
15
14
13
12
11
10
8
9
Enable
Output
Output
Select
A
B
C
G2A
G2B
Y7
GND
G1
Vcc
YO
Y1
Y2
Y3
Y5
Y6
Y4
1
2
3
4
5
6
7
1G
1A
1B
1Y0
1Y1
1Y2
1Y3
A
G
B
Y0
Y1
Y2
Y3
16
15
14
13
12
11
10
Vcc
2G
2A
2B
2Y0
2Y1
2Y2
8
GND
9
2Y3
Y2
Y3
Y1
Y0
B
A
G
1
2
3
4
5
6
7
20
19
18
17
16
15
14
Vcc
G
B1
B2
B3
B4
B5
B6
B7
B8
8
9
10
12
11
GND
A8
A7
A6
A5
A4
A3
A2
A1
D1R
13
1
2
3
4
5
6
7
1B
1A
1R
1DE
2R
2A
2B
16
15
14
13
12
11
10
Vcc
1D
1Y
1Z
2DE
2Z
2Y
8
GND
9
2D
1
2
3
4
5
6
7
IN1
NF1
IN2
NF2
IN3
NF3
IN4
16
15
14
13
12
11
10
-Vcc
GND
+Vcc
OUT
-IN
10k
10k
47k
47k
47k
540
540
540
540
540
540
47k
47k
47k
+IN
NF5
8
NF4
9
IN5
+-
+-
+-
+-
+ -
+ -
PSR-1000/PSR-2000
20
IC BLOCK DIAGRAM