The MAX4626/MAX4627/MAX4628 are low-on-resistance, low-voltage, single-pole/single-throw (SPST) analog switches that operate from a +1.8V to +5.5V sin- gle supply.
The MAX4626, MAX4627, and MAX4628 are low‑on‑resistance, low‑voltage SPST analog switches that operate from a single supply of +1.8 V to +5.5 V. The MAX4626 and MAX4628 are normally open (NO) devices, while the MAX4627 is normally closed (NC). They feature fast switching (ton ≈ 50 ns, toff ≈ 30 ns) and include built‑in overcurrent protection.
These devices are supplied in compact SOT‑23 packages (5‑pin for MAX4626/4627, 6‑pin for MAX4628) and are suitable for power routing, battery‑operated equipment, audio/video signal routing, low‑voltage data‑acquisition systems, communications circuits, PCMCIA cards, and cellular phones. Logic inputs are TTL‑compatible at a 5 V supply, and the switches can handle bidirectional analog signals across the full supply range.
| On‑Resistance (RON) at +5 V | 0.5 Ω max |
|---|---|
| On‑Resistance Flatness | 0.1 Ω max |
| Supply Voltage Range | +1.8 V to +5.5 V |
| Turn‑On Time (ton) | 50 ns max |
| Overcurrent‑Protection Threshold | 2.4 A |
| Logic Input Low Voltage (VIL) | 0.8 V |
| Logic Input High Voltage (VIH) | 2.4 V |
| Package (MAX4626/4627) | SOT‑23‑5 |
| Package (MAX4628) | SOT‑23‑6 |
The MAX4626 has an on‑resistance of up to 0.5 Ω when powered from a +5 V supply.
They operate from a single supply voltage of +1.8 V to +5.5 V.
Yes, the digital logic inputs are TTL compatible at a +5 V supply.
The switches include overcurrent protection and thermal‑shutdown circuitry to prevent damage from short circuits or excessive load.