GENERAL DESCRIPTION
The TDA8440 is a versatile video/audio switch, intended to be used in CTV receivers equipped with an AUXILIARY VIDEO/AUDIO plug.
It provides two 3-state switches for audio channels and one 3-state switch for the video channel and a video amplifier with selectable gain (times 1 or times 2).

FEATUREs
• Combined analogue and digital circuitry gives maximum flexibility in channel switching
• 3-state switches for all channels
• Selectable gain for the video channels
• Sub-addressing facility
• I2C bus or non-I2C bus mode (controlled by d.c. voltages)
• Slave receiver in the I2C bus mode
• External OFF command
• System expansion possible up to 7 devices (14 sources)
• Static short-circuit proof outputs