Union_UM3157_R01UM3157 10 Low-Voltage SPDT Analog Switch UM3157 SC70-6/SC88/SOT363 General Description The UM3157 is an advanced CMOS analog switch fabricated with silicon gate CMOS technology. It achieves very low propagation delay and RDS(ON) resistances while maintaining CMOS low power dissipation. These make it ideal for portable and battery power applications. The switch conducts signals within power rails equally well in both directions when on, and blocks up to the power supply level when off. Break-before-make is guaranteed. The select pin has over-voltage protection that allows voltages above VCC, up to 6.5V to be present on the pin without damage or disruption of operation of the part, regardless of the operating voltage. Applications z z z z Sample-and-Hold Circuits Battery powered Equipment A……