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Mitsumi Electronics |
MITSUMI 2-Input 1-Output Video Switch (W/75Ω driver)/3-Input 1-Output Video Switch (W/75Ω driver) MM1221~1228
2-Input 1-Output Video Switch (W/75Ω driver)/3-Input 1-Output Video Switch (W/75Ω driver)
Monolithic IC MM1221~MM1228 November 2, 2001
Outline
These ICs are high-end video switch ICs with 2-input 1-output or 3-input 1-output including a 75Ω driver. The
series includes those with and without a built-in clamp circuit and a 6dB amp.
The circuit configuration table and block diagram are shown below.
MM1228 is introduced as a representative model in this document.
MM1221~MM1228 Series Circuit Configuration Table
Model name
MM1221
MM1222
MM1223
MM1224
MM1225
MM1226
MM1227
MM1228
# of Inputs
2
2
3
3
2
2
3
3
# of Outputs
1
1
1
1
1
1
1
1
6dB amp circuit
No
Yes
No
Yes
No
Yes
No
Yes
www.DataSheet4U.com
Clamp circuit
No
No
No
No
Yes
Yes
Yes
Yes
Power supply voltage range
8~13V
8~13V
8~13V
8~13V
4.7~13V
4.7~13V
4.7~13V
4.7~13V
MM1221~MM1228 Input/Output Voltage Measurement Values (typ.)
Power supply
Model name
voltage
5V
9V 12V Unit
Input voltage
MM1221
Output voltage
4.53 6.05
4.5 6.1
V
V
Input voltage
MM1222
Output voltage
4.05 5.4
5.34 7.12
V
V
Input voltage
MM1223
Output voltage
4.53 6.05
4.5 6.1
V
V
Input voltage
MM1224
Output voltage
4.05 5.4
5.34 7.12
V
V
Input voltage
1.27
2.17
2.86
MM1225
Output voltage 1.31 2.25 2.96
V
V
Input voltage
MM1226
Output voltage
1.3
1.4
2.2 2.9
2.23 2.88
V
V
Input voltage
1.27
2.17
2.86
MM1227
Output voltage 1.31 2.25 2.96
V
V
Input voltage
MM1228
Output voltage
1.3
1.4
2.2 2.9
2.23 2.88
V
V
MITSUMI 2-Input 1-Output Video Switch (W/75Ω driver)/3-Input 1-Output Video Switch (W/75Ω driver) MM1221~1228
Block Diagram (MM1221~MM1228)
Control input truth table
SW OUT
L IN1
H IN2
Control input truth table
SW OUT
L IN1
H IN2
Control input truth table
SW1
L
H
L/H
SW2
L
L
H
OUT
IN1
IN2
IN3
Control input truth table
SW1
L
H
L/H
SW2
L
L
H
OUT
IN1
IN2
IN3
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