The Maxim MAX3386E is a 3 V‑powered RS‑232 transceiver designed for low‑power handheld devices such as PDAs and cell phones. It integrates two receivers and three transmitters, including a dedicated ring‑indicator transmitter, and features a VL pin that allows operation with mixed‑voltage logic levels.
The device provides robust ESD protection (±25 kV air‑gap, ±15 kV human‑body, ±8 kV contact), operates from a 20‑pin TSSOP package, and supports data rates up to 250 kbps with a typical supply current of 300 µA (less than 1 µA in shutdown).
| Supply Voltage (VCC) | +3.0 V to +5.5 V |
|---|---|
| Maximum Data Rate | 250 kbps |
| Supply Current (normal operation) | 300 µA |
| ESD Protection | ±25 kV IEC 1000‑4‑2 Air‑Gap, ±15 kV Human Body Model, ±8 kV Contact Discharge |
| Package | 20‑pin TSSOP |
| Operating Temperature Range | -40 °C to +85 °C |
| Receivers / Transmitters | 2 receivers, 3 transmitters |
| VL Pin Logic Supply Range | 1.8 V ≤ VL ≤ VCC |
It can operate at data rates up to 250 kbps while maintaining RS‑232 compliant output levels.
The device works from a supply voltage of +3.0 V to +5.5 V.
Typical supply current is about 300 µA.
It offers ±25 kV IEC 1000‑4‑2 air‑gap, ±15 kV human‑body model, and ±8 kV contact‑discharge protection on all RS‑232 pins.