The NC7SB3157/FSA3157 is a high-performance, single-pole/double-throw (SPDT) analog switch or 2:1 multiplexer/de-multiplexer bus switch. It features: 1. Useful in both analog and digital applications; 2. Space-saving, SC70 6-lead surface mount package; 3. Ultra-small, MicroPak™ leadless package; 4. Low On Resistance: <10Ω on typical at 3.3V VCC; 5. Broad VCC Operating Range: 1.65V to 5.5V; 6. Rail-to-Rail Signal Handling; 7. Power-Down, High-Impedance Control Input; 8. Over-Voltage Tolerance of Control Input to 7.0V; 9. Break-Before-Make Enable Circuitry; 10. 250MHz, 3dB Bandwidth.
The Fairchild NC7SB3157 and FSA3157 are low‑voltage single‑pole‑double‑throw (SPDT) analog switches or 2:1 multiplexers/de‑multiplexers. They are offered in ultra‑small SC70 and MicroPak surface‑mount packages and feature low on‑resistance, rail‑to‑rail operation, and a 250 MHz bandwidth.
The document provides detailed electrical characteristics, absolute maximum ratings, pin assignments, package dimensions, and ordering information for both device variants, along with typical performance curves for off‑isolation, crosstalk, and bandwidth.
| Supply Voltage Range | 1.65 V – 5.5 V |
|---|---|
| Bandwidth (3 dB) | 250 MHz |
| Storage Temperature Range | -65 °C – +150 °C |
| Power Dissipation (at +85 °C) | 180 mW |
The device operates from 1.65 V up to 5.5 V supply voltage.
The device provides a 3 dB bandwidth of about 250 MHz.