max303The MAX303 is a dual, hh-speed analog switch. The IC contains two single-pole double-throw (SPDT) switches with matching low on resistance. The switches also have low leakageMAX303 Datasheet : Precision, Dual, Hh-Speed Analog Switches, MAX303 PDF VIEW Download Maxim Integrated, MAX303 7 page Datasheet PDF, Pinouts, Data Sheet,