Index DW9916S Service Manual page 22

2-Input 1-Output Video Switch (75Ω driver)/3-Input 1-Output Video Switch (75Ω driver) MM1221~1228
MITSUMI
Block Diagram
Control input truth table
SW
L
H
Control input truth table
SW1
L
H
L/H
(MM1221~MM1228)
OUT
IN1
IN2
SW2 OUT
L IN1
L IN2
H IN3
Control input truth table
SW
L
H
Control input truth table
SW1
L
H
L/H
20
22
OUT
IN1
IN2
SW2 OUT
L IN1
L IN2
H IN3