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KIA7805API (MAIN: IC407)
KIA7812API (MAIN: IC406)
MM74HC4053MX (VIDEO: IC611~613,705)
Y1
1
16
Vcc
Y0
2
15
Y
X1
Z1
3
14
X
Z
4
13
5
12
X0
Z0
Enable
6
C
11
V
A
EE
7
10
GND
8
9
B
NJM2274 (VIDEO: IC610))
BA7626(VIDEO: IC601,603,607)
Monitor OUT
GND
IN5
GND
IN4
CTL E
IN3
CTL D
Note 1:
Note 2:
Truth Table
Control Inputs
Select
Enable
C
B
A
ONSwitches
L
L
L
L
Z0 Y0 X0
L
L
L
H
Z0 Y0 X1
L
L
H
L
Z0 Y1 X0
L
L
H
H
Z0 Y1 X1
L
H
L
L
Z1 Y0 X0
L
H
L
H
Z1 Y0 X1
L
H
H
L
Z1 Y1 X0
L
H
H
H
Z1 Y1 X1
H
X
X
X
None
X = Don't Care
BLOCK DIAGRAM
Yin
1
Disc.
Cin
8
16
IN1
15
CTL A
6dB
14
V OUT1
LOGIC
13
Vcc
12
IN2
6dB
11
CTL B
7
LOGIC
10
V OUT2
8
9
CTL C
* mark means that
feasible for either H or L.
Each input terminal is
provided with sink chip
clamp (BA7625).
Each input terminal takes
20kohm at the end (BA7626).
Power Save
6
Vref.
Clamp
Bias
7
C mute
19
AVR-550SD
A
B
E
MONITOR OUT
L
L
*
IN 1
H
L
*
IN 2
L
H
*
IN 3
H
H
L
IN 4
H
H
H
IN 5
C
D
E
V OUT 1
L
L
*
H
L
*
IN 2
L
H
*
IN 3
H
H
L
IN 4
H
H
H
IN 5
C
D
E
V OUT 2
L
L
*
IN 1
H
L
*
L
H
*
IN 3
H
H
L
IN 4
H
H
H
IN 5
Vcc
5
3
750Ω
4
2
GND
T
T
Vout
Vsag
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