The MAX4634 is a low-voltage multiple switch device launched by MAXIM company, which has the characteristics of low resistance, low leakage current and fast switching. It is suitable for battery-powered equipment, audio and video signal routing, low-voltage data acquisition systems, sampling and holding circuits, and communication circuits.
The MAX4634 analog multiplexer operates from a single +1.8 V to +5.5 V supply and offers four channels with on‑resistance as low as 2.5 Ω (typ) and a maximum of 4 Ω. It features TTL/CMOS‑compatible digital inputs, fast turn‑on (18 ns) and turn‑off (11 ns) times, and very low off‑leakage current (0.1 nA max at +25 °C).
Typical applications include battery‑operated equipment, low‑voltage data‑acquisition systems, sample‑and‑hold circuits, and communications circuits. The device includes protection diodes for over‑voltage conditions and provides detailed pin descriptions, timing diagrams, and package information for both µMAX and TDFN formats.
| On‑Resistance (R_ON) typical | 2.5 Ω (typ) at 5 V supply |
|---|---|
| On‑Resistance maximum | 4 Ω (max) |
| Off‑leakage current | 0.1 nA max at +25 °C |
| Supply voltage range | +1.8 V to +5.5 V |
| Logic input thresholds | VIL 0.8 V, VIH 2.4 V |
| Crosstalk | -78 dB at 1 MHz |
| Off‑Isolation | -80 dB at 1 MHz |
| Total Harmonic Distortion | 0.018 % |
The typical on‑resistance is 2.5 Ω when powered at 5 V.
It operates from a single supply voltage of +1.8 V up to +5.5 V.