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 toler- ates voltages up to 5.5V independent of the V CC operat- ing range.
The NC7SB3157 and FSA3157 are high‑performance, single‑pole/double‑throw (SPDT) analog switches that can also be used as 2:1 multiplexers/demultiplexers. They are fabricated in a sub‑micron CMOS process, offering fast enable/disable times, low on‑resistance, and break‑before‑make circuitry to prevent signal disruption.
The devices are supplied in compact SC70 and MicroPak surface‑mount packages, available in tape‑and‑reel form. The datasheet provides absolute maximum ratings, recommended operating conditions, DC and AC electrical characteristics, pin assignments, and land‑pattern drawings for PCB design.
| Operating Voltage Range (Vcc) | 1.65 V to 5.5 V |
|---|---|
| Propagation Delay (Break‑Before‑Make) | 0.5 ns |
| Control Input Over‑Voltage Tolerance | 7.0 V |
The device is specified to operate with a Vcc of 1.65 V to 5.5 V.
It is offered in a 6‑lead SC70 (EIAJ SC88) package and a lead‑less 6‑lead MicroPak package, both supplied on tape and reel.