NC7SBU3157: Low Voltage SPDT Analog Switch with -2V Undershoot Protection

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 VCC operating range. The control input tolerates voltages up to 5.5V, independent of the VCC 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.

Features

• Useful in both analog and digital applications
• Space saving SC70 6-lead surface mount package
• Low On Resistance: < 10ohm on typ @ 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
• Overvoltage tolerance of control input to 7.0V
• Break before make enable circuitry
• 250 MHz - 3dB bandwidth
• Available in Lead (Pb) Free packaging

Application Notes