Yamaha DTXT2S, Service Manual

Page: 17 / 95

17
DTXTREME IIS
74AHC139DT (X2176A00)
Dual 2 to 4 Demultiplexer
DM: IC121
74HC4052DT (XZ101A00)
Differential 4-Channel Multiplexer
JK: IC401, 402
74AHC243DT (X2173A00)
Octal D-Type Flip-Flop
DM: IC213
74HC374DT (XZ102A00)
Octal 3-State D-Type Flip-Flop
DM: IC011, 013, 019
PN: IC701-705, 707
74HC74DT (X2171A00)
Dual D-Type Flip-Flop
DM: IC012, 204-208
JK: IC618-622
74HC4053DT (X2174A00)
Multiplexer/Demultiplexer
DM: IC122
MB3790PF (XR967A00)
RESET
DM: IC006
Vcc
2CLR
2Q
GND
1Q
1PR
1CRL 1
2
3
4
5
6
7
8
9
10
11
12
13
14
2PR 1Q
1CK
1D
2D
2CK
2Q
Q
PR
Q
CK
D
Q
PR
D
CK
Q
CLR
CLR
INPUTS OUTPUTS
L
L
H
H
H
H
PR
H
L
L
H
H
H
CLR
X
X
X
L
CLK
X
X
X
H
L
X
D
H
H
L
H
L
Q
Q
L
H
H
L
H
Q
Q
1 CLEAR
2
3
4
5
6
7
8
9
10
1Q
1D
2D
2Q
3Q
3D
4D
4Q
GND 11
12
13
14
15
16
17
18
19
20 V
CC
8Q
8D
7D
7Q
6Q
6D
5D
5Q
CLOCK
Q Q
D D CK CK
CL CL
Q Q
D D CK
CK
CL CL
Q Q
D D
CK
CK
CL CL
Q
Q
D
D
CK CK
CL CL
Q
D CK
OE
Q
D CK
OE
Q
D CK
OE
Q
D CK
OE
OUTPUT
CONTROL
1Q
1D
2D
2Q
3Q
3D
4D
4Q
GND
1 20
2 19
3 18
4 17
5 16
6 15
7 14
8 13
9 12
10 11
Vcc
8Q
8D
7D
7Q
6Q
6D
5D
5Q
CLOCK
Q
D CK
OE
Q
D CK
OE
Q
D CK
OE
Q
D CK
OE
1
2
3
4
5
6
7
2Y1
2Y0
3Y1
(common) 3Z
3Y0
E
V
EE
16
15
14
13
12
11
Vcc
2Z (common)
1Z (common)
1Y1
1Y0
S1
S2
2Z
2Y1
S3
1Z
1Y1
1Y0
S1
S2
8 GND 9
10
S3
2Y0
3Y1
3Z
3Y0
E
1
2
3
4
5
6
7
E
16
15
14
13
12
11
10
8
9
2Y0
2Y0
2Y2
2Y2
2Z
2Z
2Y3 2Y3
2Y1 2Y1
V
EE
Vcc
1Y2 1Y2
1Y1 1Y1
1Z 1Z
1Y0 1Y0
1Y3 1Y3
S0 S0
GND S1
S1
E
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
N.C.
V
BAT1
V
OUT
V
OUT
V
BAT2
ALARM1
GND
CONTROL
N.C.
V
IN
V
IN
V
SENSE
C
T
RESET
RESET
ALARM1
1
2
3
4
5
6
7
8
10
9
13
12
11
16
15
14
2
3
4
5
6
7
8
9
10
11
12
16
14
13
C
T
V
BAT2
V
BAT1
ALARM2
RESET
RESET
ALARM1
V
OUT
V
OUT
V
IN
V
IN
V
SENSE
CONTROL
GND
+
590k
240k
1.24V
Reference
Voltage
Power Supply
Circuit
S Q
R
100
SBD
2.65V
2.37V
500
V
IN
V
IN
V
OUT
V
OUT
3 A
V th:3V
V th:1.5V
R
CN
0.5
-
+
-
+
-