The NC7SB3157 or FSA3157 is a high performance, single-pole/double-throw (SPDT) Analog Switch or 2:1 Multiplexer/Demultiplexer 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
• Space-saving SC70 6-lead surface mount package
• Ultra-small MicroPak™ Pb-Free leadless package
• Low On Resistance; < 10W on 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
• 250 MHz - 3dB bandwidth