The MAX4641/MAX4642/MAX4643 are monolithic, dual, single-pole/single-throw (SPST) switches that can operate from a single supply ranging from +1.8V to +5.5V. The MAX4641/MAX4642/MAX4643 provide low 4Ω on-resistance (RON), 0.6Ω RON matching between channels, and 1Ω RON flatness over the entire analog signal range. These devices offer fast switching times of less than 20ns while consuming less than 0.01µW of quiescent power. The MAX4641 has two normally open (NO) switches, and the MAX4642 has two normally closed (NC) switches. The MAX4643 has one NO switch and one NC switch. All three devices have low 0.35nA leakage currents over the entire temperature range. The MAX4641/ MAX4642/MAX4643 are available in small 8-pin µMAX and 8-pin QFN packages.
The MAX4641, MAX4642 and MAX4643 are monolithic dual SPST analog switches that operate from a single supply ranging from +1.8 V to +5.5 V. They provide a guaranteed on‑resistance of 4 Ω (max at +5 V) with a channel‑to‑channel matching of 0.6 Ω and a flatness of 1 Ω over the full analog signal range. Switching times are under 20 ns and quiescent power consumption is less than 0.01 µW, while leakage currents stay below 0.35 nA across the temperature range.
The devices are offered in 8‑pin µMAX and 8‑pin QFN packages and are suited for battery‑operated equipment, audio/video signal routing, low‑voltage data‑acquisition systems, sample‑and‑hold circuits and communications circuitry. Key electrical specifications, pin configurations, and typical performance curves are provided in the datasheet.
| Supply Voltage Range | +1.8 V to +5.5 V |
|---|---|
| On‑Resistance (R_ON) Max | 4 Ω |
| On‑Resistance Matching | 0.6 Ω |
| On‑Resistance Flatness | 1 Ω |
| Switching Time | < 20 ns |
| Quiescent Power Consumption | < 0.01 µW |
| Leakage Current | < 0.35 nA |
| Operating Temperature Range | -40 °C to +85 °C |
| Package Types | 8‑pin µMAX, 8‑pin QFN |
The devices operate from a single supply ranging from +1.8 V to +5.5 V.
The guaranteed on‑resistance is 4 Ω maximum at a +5 V supply.
Switching times are less than 20 ns.
They are offered in 8‑pin µMAX and 8‑pin QFN packages.