View ba7631 datasheet:

Video ICs Video switch for CANAL-Plus decoder BA7631 / BA7631F The BA7631 and BA7631F are audio-switching ICs for decoders for scrambled pay channels used in France and other countries. The ICs include a five-input multiplexer, a four-input multiplexer and a two-input multiplexer, and allow decoder audio switching to be done with a single IC. When used in combination with the BA7630S common logic control can be used for audio and video switching. Applications • Video cassette recorders Features • 1) All the audio-switching functions required for SECAM 4) Wide supply voltage range (4.5V to 13.0V). CANAL -plus decoder integrated onto one chip. 5) Low total harmonic distortion (0.005% Typ.). 2) Inputs terminated with 65k? resistors. 6) Wide dynamic range (3.6Vrms, VCC = 12V). 3