TA8720AN

The TA8720AN is a kind of IC used for switching of 4-inputs 3 circuits of sound (L, R) and video signals.

There are some features of the TA8720AN as follows: (1)audio section (2 channels for a STEREO signal): inputs: three inputs for external signals and an input for an internal TV signal; output: a switched and selected output Sound Mute; (2)video section: inputs: two inputs for external signal (Sync negative), YC inputs for S-VHS and an input for and internal TV signal (Sync negative or positive); outputs: monitor output (YC MIX circuit for S-VHS is built-in), Y signal output and chroma signal output.

What comes next is about the maximum ratings (Ta=25) of the TA8720AN: (1)power supply voltage, VCC max: 15 V; (2)input terminal signal voltage, ein max: 3 Vp-p; (3)input terminal voltage, Vin max: GND-0.3 to VCC+0.3 V; (4)power dissipation, PD max: 1.6 W; (5)operating temperature, Topr: -20 to 65; (6)storage temperature, Tstg: -55 to 150. Then is about the characteristics of supply current: (1)supply current (pin 28: VCC1), ICC1: 4.0 mA min, 6.0 mA typ and 9.0 mA max; (2)supply current (pin 29: VCC2), ICC2: 14 mA min, 21 mA typ and 31 mA max; (3)total supply current (ICC1+ICC2), ICC: 18 mA min, 27 mA typ and 40 mA max.