The MAX4624/MAX4625 are low-on-resistance, low-voltage single-pole/double-throw (SPDT) analog switches that operate from a single +1.8V to +5.5V supply. The MAX4624 has break-before-make switching; the MAX4625 has make-before-break switching. These devices also have fast switching speeds (tON = 50ns max, tOFF = 50ns max). When powered from a +5V supply, the MAX4624/MAX4625 offer 1Ω max on-resistance (RON), with 0.12Ω max RON matching and flatness. The digital logic inputs are TTL compatible when using a single +5V supply. These switches also feature overcurrent protec-tion to prevent damage from short circuits and exces-sive loads. The MAX4624/MAX4625 are pin compatible with the MAX4544 and are available in space-saving standard 6-pin SOT23 packages, as well as the 1.0mm high Thin SOT package.
The MAX4624/MAX4625 are low‑on‑resistance, low‑voltage single‑pole/double‑throw (SPDT) analog switches that operate from a single +1.8 V to +5.5 V supply. MAX4624 provides break‑before‑make switching, while MAX4625 provides make‑before‑break switching. They are suited for power routing, battery‑operated equipment, audio/video signal routing, low‑voltage data‑acquisition, communications circuits, PCMCIA cards, cellular phones, modems, and hard drives.
Key electrical characteristics include a typical on‑resistance of 1 Ω max at a +5 V supply, 0.12 Ω max on‑resistance matching, 50 ns maximum turn‑on and turn‑off times, TTL‑compatible logic inputs at +5 V, and built‑in over‑current protection. The devices are offered in standard 6‑pin SOT23 and 1.0 mm high ThinSOT packages and are pin‑compatible with the MAX4544.
| On‑Resistance (RON) max | 1 Ω @ +5 V |
|---|---|
| On‑Resistance match max | 0.12 Ω |
| Turn‑On Time (tON) max | 50 ns |
| Turn‑Off Time (tOFF) max | 50 ns |
| Supply voltage range | +1.8 V to +5.5 V (single‑supply) |
| Logic input TTL compatibility | Yes, at +5 V supply |
| Package types | 6‑pin SOT23 and 1.0 mm ThinSOT |
| Pin compatibility | MAX4544 |
The MAX4624 uses break‑before‑make switching, while the MAX4625 uses make‑before‑break switching.
The maximum on‑resistance is 1 Ω.
They operate from a single‑supply voltage of +1.8 V to +5.5 V.
Yes, the logic inputs are TTL compatible when the device is powered at +5 V.