TX-SR403/8340
IC BLOCK DIAGRAM AND TERMINAL DESCRIPTIONS-18
Q1003, 1012, 1013 : LA7956 (Video switch)
BLOCK DIAGRAM
TRUTH TABLE
S2
(Pin 2)
H
L
H
L
S3
(Pin 3)
H
H
L
L
Vin1
(Pin 4)
ON
OFF
OFF
OFF
Vin2
(Pin 6)
OFF
ON
OFF
OFF
Vin3
(Pin 8)
OFF
OFF
ON
OFF
Vin4
(Pin 9)
OFF
OFF
OFF
ON
driver
control
6dB
amp
video switch
(4input 1output)
1
2
3
4
VIDEO
OUT
A
B
VINI
5
GND
6
VIN2
7
VCC
8
VIN3
9
VIN4
www. xiaoyu163. com
QQ 376315150
9
9
2
8
9
4
2
9
8
TEL 13942296513
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299