The FSA3157B is a high-performance, single-pole/double-throw (SPDT) analog switch or 2:1 multiplexer / de-multiplexer bus switch.

The device is fabricated with advanced sub-micron CMOS technology to achieve high-speed enable and disable times and low on resistance. The break-before-make select circuitry prevents disruption of signals on the B Port due to both switches temporarily being enabled during select pin switching. The device is specified to operate over the 1.65 to 5.5V V_CC operating range. The control input tolerates voltages up to 5.5V, independent of the V_CC operating range.

• Useful in Both Analog and Digital Applications
• Ultra-small MicroPak™ Leadless Package
• Low On Resistance: < 10W Typical at 3.3V V_CC
• Broad V_CC Operating Range: 1.65V to 5.5V
• Rail-to-rail Signal Handling
• Power-down, High-impedance Control Input
• Over-voltage Tolerance of Control Input to 7.0V
• Break-before-make Enable Circuitry
• 250MHz, 3dB Bandwidth