The NC7SBU3157 / FSAU3157 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 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

Fairchild's integrated Undershoot Hardened Circuit (UHC®) senses undershoot at the I/Os, and responds by preventing voltage differentials from developing and turning the switch on.

• Analog and digital applications
• Space-saving, SC70 6-lead, surface-mount 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