• Part: MM1238
  • Description: 3-Input 2-Output 3-Circuit Video Switch
  • Manufacturer: Mitsumi Electronics
  • Size: 116.80 KB
Download MM1238 Datasheet PDF
Mitsumi Electronics
MM1238
MM1238 is 3-Input 2-Output 3-Circuit Video Switch manufactured by Mitsumi Electronics.
Features 1. One of the two video signal outputs is used for external output, and has a 6d B amp, 75Ω, 1VP-P 2. Input impedance 1~3 video circuits 15kΩ 1~3 audio circuits 68kΩ 3. Crosstalk Video -60d B (at 4.43MHz) Audio -80d B (at 1k Hz) Video : Audio -70d B (at 100k Hz) 4. Frequency response 10MHz (6d B, 75Ω, amp only, 7MHz) 5. Supply voltage 8.0~13.0V Package SDIP-22A (MM1238XD) .. Applications 1. TV 2. Free-standing VCR 3. Other video equipment Pin Assignment 22 21 20 19 18 17 16 15 14 13 12 1 2 3 4 5 6 7 8 9 10 11 SDIP-22P Pin no. 1 2 3 4 5 6 7 8 9 10 11 Pin name LIN1 VIN1 RIN1 C11 LIN2 VIN2 RIN2 C12 LIN3 VIN3 RIN3 Function Audio LIN1 Video IN1 Audio RIN1 SW1 control Audio LIN2 Video IN2 Audio RIN2 SW1 control Audio LIN3 Video IN3 Audio RIN3 Pin no. 12 13 14 15 16 17 18 19 20 21 22 Pin name C21 ROUT2 VOUT2 LOUT2 GND C22 VCC ROUT1 LOUT1 VOUT1 SAG Function SW2 control Audio ROUT2 Video OUT2 Audio LOUT2 GND SW2 control Power supply Audio ROUT1 Audio LOUT1 Video OUT1 Sag pin MITSUMI 3-Input 2-Output 3-Circuit Video Switch MM1238 Block Diagram SW Logic Control input C11 L L H H C12 L H L H Output signal VOUT1 Mute VIn1 VIn2 VIn3 ROUT1 Mute RIn1 RIn2 RIn3 LOUT1 Mute LIn1 LIn2 LIn3 Control input C21 L L H H C22 L H L H Output signal VOUT2 Mute VIn1 VIn2 VIn3 ROUT2 Mute RIn1 RIn2 RIn3 LOUT2 Mute LIn1 LIn2 LIn3 Absolute Maximum Ratings Item Storage temperature Operating temperature Power supply voltage Allowable loss (Ta=25°C) Symbol TSTG TOPR VCC Pd Ratings -40~+125 -20~+75 15 800 Units °C °C V m W MITSUMI 3-Input 2-Output 3-Circuit Video Switch MM1238 Electrical Characteristics Item Operating power supply voltage Consumption current VOUT1 output Voltage gain Frequency characteristic Differential gain Differential phase ROUT1 output Voltage gain Total harmonic distortion Mute noise Output noise voltage LOUT1 output Voltage gain Total harmonic distortion Mute noise Output noise voltage VOUT2 output Voltage gain Frequency characteristic Differential gain...