The MAX3386E is a 3V-powered EIA/TIA-232 and V.28/V.24 communications interface with low power requirements, high data-rate capabilities, and enhanced electrostatic discharge (ESD) protection. The device has two receivers and three transmitters. All RS-232 inputs and outputs are protected to ±15kV using the IEC 1000-4-2 Air-Gap Discharge method, ±8kV using the IEC 1000-4-2 Contact Discharge method, and ±15kV using the Human Body Model. A proprietary low-dropout transmitter output stage enables true RS-232 performance from a +3.0V to +5.5V supply with a dual charge pump. The charge pump requires only four small 0.1µF capacitors for operation from a +3.3V supply. The MAX3386E is capable of running at data rates up to 250kbps while maintaining RS-232 compliant output levels. The MAX3386E has a unique VL pin that allows interoperability in mixed-logic voltage systems. Both input and output logic levels are pin programmable through the VL pin. The MAX3386E is available in a space-saving TSSOP package.
The MAX3386E is a low‑power RS‑232 and V.28/V.24 communications interface designed for sub‑notebook, PDA and handheld applications. It features dual charge‑pump supplies, three transmitters, two receivers, and a programmable VL pin for mixed‑voltage systems.
Key features include +15 kV ESD protection on all I/O pins, operation from 3.0 V to 5.5 V, a guaranteed 250 kbps data rate, low 300 µA supply current, and a compact 20‑pin TSSOP package.
| Supply Voltage Range | 3.0 V to 5.5 V |
|---|---|
| Maximum Data Rate | 250 kbps |
| ESD Protection (Human Body Model) | +15 kV |
| Shutdown Supply Current | < 1 A |
| Package Type | 20‑pin TSSOP |
| Operating Temperature Range | 0 °C to +70 °C |
| Number of Receivers / Transmitters | 2 receivers, 3 transmitters |
The device supports data rates up to 250 kbps.
It is protected to +15 kV using the Human Body Model, +8 kV contact discharge, and +15 kV air‑gap discharge.
The transceiver operates from 3.0 V up to 5.5 V.
It contains two receivers and three transmitters.