The MAX4635/MAX4636 are fast, dual 4Ω single-pole/double-throw (SPDT) analog switches that operate with supply voltages from +1.8V to +5.5V. High switching speeds, 1Ω on-resistance flatness, and low power consumption make these devices ideal for audio/video, communications, and battery-operated devices. Containing two independently controllable SPDT switches in 10-pin µMAX and 10-pin 3mm x 3mm thin QFN packages, the MAX4635/MAX4636 use little board space, and have low power consumption ensuring minimal impact on your power budget. The analog signal range extends to the supply rails. The MAX4635 has inverted logic compared to the MAX4636.
The MAX4635 and MAX4636 are dual, 4 Ω single‑pole/double‑throw (SPDT) analog switches that operate from a single supply of +1.8 V to +5.5 V. They feature low on‑resistance, fast switching (tON ≤ 14 ns, tOFF ≤ 6 ns), rail‑to‑rail signal handling, and low power consumption, making them suitable for audio/video, communications, and battery‑operated equipment.
The devices are offered in 10‑pin µMAX and 3 mm × 3 mm thin‑QFN packages. Electrical characteristics include guaranteed on‑resistance matching, low crosstalk (‑67 dB at 1 MHz), high off‑isolation (‑65 dB at 1 MHz), and a total harmonic distortion of 0.1 %. The datasheet provides detailed pin descriptions, package dimensions, and application notes such as over‑voltage protection using external diodes.
| Supply Voltage Range | +1.8 V to +5.5 V |
|---|---|
| On‑Resistance (RON) Max @ +5 V | 4 Ω |
| Switching Speed (tON max) | 14 ns |
| Off‑Isolation (1 MHz) | -65 dB |
| Crosstalk (1 MHz) | -67 dB |
| Input Logic High (V+ = +5 V) | 2.4 V |
| Input Logic Low (V+ = +5 V) | 0.8 V |
The devices operate from a single supply voltage of +1.8 V to +5.5 V.
The maximum on‑resistance is 4 Ω when powered at +5 V.