Yamaha RS7000 Service Manual page 32

RS7000
IC BLOCK DIAGRAM
HD74HC14FPEL (XL094A00)
TC74VHC14F-EL (XW876A00)
74VHC14SJX (XZ200A00)
Hex Inverter
DM: IC003,010,015,021,053
1
1A 14
2
13
1Y
3
12
2A
4 11
2Y
5 10
3A
6
9
3Y
7
GND 8
HD74LV74AFPEL (IS007400)
Dual D-Type Flip-Flop
DM: IC014,016-019
1CLR 1
14
2 13
1D D
D
3
12
1CK CK
4
1PR 11
PR CK
5
Q 10
1Q
PR
6
Q 9
1Q Q
7
GND 8
Q
INPUTS OUTPUTS
PR CLR CLK D Q
L H X X H
H L X X L
L L X X H
H H f H H
H H f L L
H H L X Q
O
HD74LV164AFPEL (IS016400)
8-Bit Shift Register
DM: IC083
A
1 14
SIRIAL
A
INPUT
B
2 B QH 13
QA
3 QA QG 12
QB
4 QB QF 11
OUTPUTS
QC
5 QC QE 10
QD
6 QD CLEAR 9
CK
A
GND
7 8
32
HD74LV21AFPEL (IS002100)
Dual 4 Input AND
DM: IC033
1A
VDD
1B
6A
NC
6Y
1C
5A
1D
5Y
1Y
4A
GND
4Y
TC74VHCT138AFEL (XZ137A00)
3 to 8 Demultiplexer
DM: IC038,039
VCC
2CLR
A
2D
Select
B
2CK
C
2PR
G2A
Enable
2Q
G2B
2Q
G1
Output
Y7
GND
Q
L
H
H
L
H
Q
O
TC74VHCT245AFT (XT744A00)
HD74LV245AT (XW744A00)
HD74LVC245A (XW148A00)
Octal 3-State Bus Transceiver
DM: IC028-032,047,066,067,069,
070,072,073,075,076,078,080,082
VCC
D1R
QH
A1
QG
A2
OUTPUTS
A3
QF
A4
QE
A5
CLEAR
A6
CLOCK
A7
A8
GND
Vcc
1 14
2D
2 13
2C
3 12
NC
4 11
2B
5 10
2A
6 9
2Y
7 8
1 16 Vcc
A
2
B Y0 15
YO
3 14
C Y1
Y1
4
G2A Y2 13 Y2
Output
5
G2B Y3 12
Y3
6 11
G1 Y4
Y4
7
10 Y5
Y7 Y5
Y6
8
9 Y6
1
20 Vcc
2
19
G
18
3
B1
17
4
B2
16
5
B3
15
6
B4
14
7 B5
13
8 B6
12
9 B7
11 B8
10
HD74LV32AFPEL (IS003200)
HD74LVC32FP (XS792A00)
TC74HCT32AF(EL) (XY096A00)
Quad 2 Input OR
DM: IC011,012,027,045,052,064
1A Vcc
1 14
1B 4B
2 13
1Y 4A
3 12
2A 4Y
4 11
2B 3B
5 10
2Y 3A
6 9
GND 3Y
7 8
HD74LV139AFPEL (IS013900)
Dual 2 to 4 Demultiplexer
DM: IC092
1
1G 16 Vcc
G
2 G
1A 15 2G
A
A
3
14
1B 2A
B
B
1Y0 4 13 2B
Y0
Y0
5 12
1Y1 2Y0
Y1
6 Y1
11
1Y2 2Y1
Y2
7 Y2
1Y3 10 2Y2
Y3
Y3
8
GND 9 2Y3
HD74LV273AFPEL (IS027300)
Octal D-Type Flir Flop
DM: IC046
1 20
CLEAR
2 19
1Q Q Q
CL CL
3 D CK CK D 18
1D
4 17
2D
D CK CK D
CL CL
5 Q Q 16
2Q
6 15
3Q
Q Q
CL CL
7 D CK CK D 14
3D
8 13
4D
D CK CK D
CL CL
9 Q Q 12
4Q
10 11
GND
VCC
8Q
8D
7D
7Q
6Q
6D
5D
5Q
CLOCK