The FSA6157 is a high-performance, Single Pole Double Throw (SPDT) analog switch that features a low RON of 0.8 (typical) at 2.7V supply. The FSA6157 operates over a wide VCC range of 1.65V to 4.3V and is designed for break-before-make operation. The select input is TTLlevel compatible. The FSA6157 features very low quiescent current even when the control voltage is lower than the VCC supply. This feature suits mobile handset applications by allowing direct interface with baseband processor general-purpose I/Os with minimal battery consumption. The FSA6157T includes termination resistors to improve the susceptibility to noise during overshoot excursions, off-isolation coupling, or "pop-minimization."