Yamaha ACD1 Service Manual page 19

SN74LV574APWR (X5135A00)
DS1: IC504
DS2: IC608
SN74LVC574APWR (X5742A00)
ENT2: IC116, IC117
Octal D-Type Flip-Flop
Output
1 20 Vcc
Control
Q
2 D 19
D0 Q0
CK OE
3 D Q 18
D1 Q1
CK
OE
4 D Q 17
D2 Q2
CK
OE
D Q
D3 5 16 Q3
CK OE
D Q
6 15
D4 Q4
CK OE
D Q
7 14
D5 Q5
CK OE
D Q
8 13
D6 Q6
CK OE
D Q
9 12
D7 Q7
CK OE
Clock
GND 10 11
SN74LVCC4245APWR (X3096A00)
BRG: IC108
Dual Supply Octal Bus Transceiver
VCCA
1 VCCB
24
0
VCCB
DIR 2 1 23
A
A1 3 /G
2 B 22
B1
A2 4
3 D 21
A3
5
4 D 20 B2
A4 6
5 G2 19
B3
A5
7 18
6 G1
B4
A6 8 7 15 B5
17
A7 9 16
8 14
B6
A8 10 9 13 15
B7
GND 11 14
10 12 B8
11
GND 12 13
GND
DS36276M (X2155A0R)
DS2: IC605
TRANSCEIVER
V
CC
RO 1 8
R
RE 2 7 DO/RI
DE 3 6 DO/RI
D
DI 4 5 GND
SN74LV4051ANSR (X3955A00)
BRG: IC203
Single 8-Channel
Multiplexer/Demultiplexer
Y4
Vcc
1 16
Y6 Y2
2 15
COM
Y1
3 14
Y7 Y0
4 13
Y5
Y3
5 12
INH A
6 11
GND B
7 LOGIC 10
GND C
8 9
INPUTS
ON
CHANNEL
INH C B A
L L L L Y0
L L L H Y1
L L H L Y2
L L H H Y3
L H L L Y4
L H L H Y5
L H H L Y6
L H H H Y7
H X X X None
SN74LV21APWR (X2377A0R)
CPU: IC020
Dual 4 Input AND
1A Vcc
1 14
1B 2D
2 13
NC 2C
3 12
1C NC
4 11
1D 2B
5 10
1Y 2A
6 9
GND 2Y
7 8
SN74LV04APWR (X5965A0R)
BRG: IC101, IC102, IC201
Hex Inverter
1A 1 14
VDD
2
13
1Y
6A
3 12
2A 6Y
4
2Y 11
5A
5
10
3A 5Y
6 9
3Y
4A
7
Vss 8
4Y
SN74LV4052APWR (X6976A00)
BRG: IC206
Differential 4-Channel
Multiplexer/Demultiplexer
0Y 1 VDD
16
2Y
2 15
2Y 2X 2X
Y-COM 3 Y-COM 1X 1X
14
3Y 4 3Y X-COM
13 X-COM
1Y 5
1Y 0X 12
0X
INH 6
INH 3X 11
3X
VEE 7
A 10 A
B
VSS 8
9
TC74VHC02FT (X2508B00)
BRG: IC113
Quad 2 Input NOR
1Y Vcc
1 14
1A 4Y
2 13
1B 4A
3 12
2Y 4B
4 11
2A 3Y
5 10
2B 3A
6 9
Vss 3B
7 8
ACD1
19