The MAX3387E is a 3V powered TIA/EIA-232 and V.28/V.24 communications interface from MAXIM with low power requirements, high data-rate capabilities, and enhanced electrostatic discharge (ESD) protection.
The MAX3387E is a 3 V powered TIA/EIA‑232 and V.28/V.24 communications interface designed for portable devices such as sub‑notebooks, PDAs, cell‑phone data cables, and battery‑powered equipment. It features three receivers and three transmitters, each protected against high‑voltage electro‑static discharge.
Key features include a dual charge‑pump supply that operates from +3.0 V to +5.5 V, AutoShutdown Plus that reduces supply current to 1 µA when idle, VLPin for programmable logic‑level compatibility, and a 24‑pin TSSOP package. The device supports data rates up to 250 kbps while maintaining RS‑232 voltage levels.
| Supply Voltage Range | +3.0 V to +5.5 V |
|---|---|
| Maximum Data Rate | 250 kbps |
| Supply Current (AutoShutdown Plus) | 1 µA |
| Package | 24‑pin TSSOP |
It operates from a supply voltage of +3.0 V up to +5.5 V.
When FORCEOFF is high and no valid RS‑232 signal is detected for 30 seconds, the charge pumps shut down, lowering the supply current to about 1 µA.
The device supports data rates up to 250 kbps while maintaining RS‑232 compliant output levels.