MITSMI MM1231, MM1234, MM1232, MM1233 Datasheet

MITSUMI

2-Input 1-Output 3-Circuit Video Switch MM1231~1234

2-Input 1-Output 3-Circuit Video Switch

Monolithic IC MM1231~1234

Outline

This is serial 2-input, 1-output, 3-circuit video switch IC for video / audio signal switching with and without
clamp circuit.
Circuit configuration tables and block diagrams are as follows.
MM1234 is used as the representative model in this description.

MM1231~MM1234 Series Circuit Configuration Table

Model name # of Inputs # of Outputs Clamp circuit

MM1231 2 1 No 4.6~13.0V

MM1232 2 1 1 input 4.6~13.0V

MM1233 2 1 2 input 4.6~13.0V

MM1234 2 1 3 input 4.6~13.0V

Power supply voltage

MM1231~MM1234 Input/Output Voltage Measurement Values (typ.)

Model name

MM1231

MM1232

MM1233

Input / Output

voltage

Input voltage 2.80 5.00 6.70 V

Output voltage 2.01 4.30 6.00 V

Input voltage 2.80 5.00 6.70 V

Output voltage 2.10 4.30 6.00 V

Input clamp 1.40 2.50 3.30 V

Output voltage 0.70 2.20 2.90 V

Input voltage 2.80 5.00 6.70 V

Output voltage 2.10 4.30 6.00 V

Input clamp 1.40 2.50 3.30 V

Power supply voltage

Unit

5V 9V 12V

MM1234

Output voltage 0.70 2.20 2.90 V

Input clamp 1.40 2.50 3.30 V

Output voltage 0.70 2.20 2.90 V

MITSUMI

2-Input 1-Output 3-Circuit Video Switch MM1231~1234

Block Diagram

MM1231 MM1232

MM1233 MM1234

(MM1231~MM1234)

Control input truth table

SW OUT

IN1A

L IN2A

IN3A

IN1B

H IN2B

IN3B

MITSUMI

2-Input 1-Output 3-Circuit Video Switch MM1231~1234

Introduction of Main Model

2-Input 1-Output 3-Circuit Video Switch

Monolithic IC MM1234

Outline

This is a video switch for video signal switching, with 2-input and 1-output circuits built in. All three circuits
have a clamp function.

Features

1. 3 circuits built in, 2-input and 1-output

2. Clamp function

3. Current consumption 9.0mA typ.

4. Operating power supply voltage range 4.6~13.0V

5. Frequency response 10MHz

6. Crosstalk 70dB (at 4.43MHZ)

Package

SOP-16B
DIP-16B

Applications

1. TV

2. VCR

3. Other video equipment