The MAX4762–MAX4764/MAX4764A/MAX4765 low-voltage, dual SPDT, audio switches feature negative signal capability that allows signals below ground to pass through without distortion. These analog switches operate from a single +1.8V to +5.5V supply and have low 0.6Ω on-resistance, making them ideal for switching audio signals. The MAX4763/MAX4765 include a comparator that can be used for headphone detection or a mute/send key function. The MAX4764/MAX4764A/MAX4765 have an internal shunt switch to automatically discharge any capacitance at the NO and NC connection points. This reduces click-and-pop sounds that occur when switching audio signals between precharged points. These SPDT switches are available in space-saving µMAX, TDFN, thin QFN, and UCSP packages and operate over the -40°C to +85°C extended tempera- ture range.
The MAX4762–MAX4764/MAX4764A/MAX4765 family are low‑on‑resistance, low‑voltage dual SPDT analog switches that operate from a single +1.8 V to +5.5 V supply. They feature negative‑signal capability, break‑before‑make switching, and optional comparator functions for headphone or mute detection. Internal shunt switches in the MAX4764/‑A/‑5 variants automatically discharge capacitance at the NO and NC terminals, reducing click‑pop noise.
The datasheet provides detailed electrical characteristics, absolute maximum ratings, dynamic timing parameters, pin descriptions, and package drawings for µMAX, TDFN, thin QFN and UCSP formats. Typical performance graphs illustrate turn‑on/off times, on‑resistance versus supply voltage, and frequency response, supporting design of portable audio, handheld, and notebook applications.
| Supply Voltage Range | +1.8 V to +5.5 V |
|---|---|
| On‑Resistance (RON) | 0.6 Ω (typical at 2.7 V) |
| Operating Temperature Range | -40 °C to +85 °C |
| Package Options | µMAX, TDFN, thin QFN, UCSP |
They operate from a single +1.8 V to +5.5 V supply.
The MAX4763 and MAX4765 models include a comparator that can be used for headphone detection or mute/send key functions.
The typical on‑resistance is about 0.6 Ω at a 2.7 V supply.