TS3A4751 Quad SPST Analog Switch Texas Instruments TS3A4751 low-voltage single-supply quad single-pole/single-throw (SPST) analog switch operates from a single 1.6V to 3.6V supply and has fast switching speeds, handles rail-to-rail analog signals, and consumes very low quiescent power. The Texas Instruments TS3A4751 has a digital input that is 1.8V CMOS compatible when using a 3V supply.