The MAX3380E/MAX3381E are +2.35V to +5.5V-powered EIA/TIA-232 and V.28/V.24 communication interfaces with low power requirements, high data-rate capabilities, and enhanced electrostatic discharge (ESD) protection on both the TTL and RS-232 sides.
The MAX3380E and MAX3381E are dual‑channel RS‑232 transceivers that operate from +2.35 V to +5.5 V and feature a low‑power AutoShutdown Plus mode that reduces supply current to 1 µA when idle. They provide ±15 kV ESD protection on all I/O pins and include a separate logic‑level supply (V L) for flexible interfacing.
The devices are supplied in a 20‑pin TSSOP package, support data rates up to 460 kbps (MAX3380E) or 250 kbps (MAX3381E), and operate over a wide temperature range. Detailed pin descriptions, electrical characteristics, timing diagrams, and ESD test information are provided.
| Supply Voltage Range | +2.35 V to +5.5 V |
|---|---|
| Logic Level Supply (V L) | +1.65 V to +5.5 V |
| Maximum Data Rate (MAX3380E) | 460 kbps |
| Maximum Data Rate (MAX3381E) | 250 kbps |
| AutoShutdown Supply Current | 1 µA |
| ESD Protection | ±15 kV (Human Body Model, IEC 1000‑4‑2 Air‑Gap) |
| Package | 20‑pin TSSOP |
| Operating Temperature Range | –40 °C to +85 °C (MAX3380E/EUP, MAX3381E/EUP) |
They operate from +2.35 V up to +5.5 V.
The MAX3380E can transmit at up to 460 kbps.
The AutoShutdown Plus mode reduces supply current to about 1 µA.
All I/O pins are protected to ±15 kV using the Human Body Model and IEC 1000‑4‑2 Air‑Gap methods.