Block Diagram - Yamaha SPX50D Service Manual

SPX50D
1C
BLOCK
DIAGRAM
(ICT^^n
'y^m)
•
SN74HC02N
(IR000250)
Quad 2
Input
NOR
•
SN74HCU04N
(IG1
42250)
Hex
Inverter
•
SN74HC14N
(IR001450)
Hex
Inverter
•
SN74HC32N
(IR003250)
Quad
2
Input
OR
Vcc
46
4A
4Y
3B
3A
3Y
•
SN74HC174IM
(IR017450)
Hex D-Type
Flip-Flop
•
SN74HC74N
(IR007450)
Dual
D-Type
Flip-Flop
•
SN74HC139N
(1R013950)
Dual 2
to
4 Demultiplexer
•
SIM74HC245N
(IR024550)
Octal 3-State
Bus Transceiver
• SIM74LS266P (XA379001)
Quad 2
Input O.C.
Ex-NOR
10