MAX3232EUE+T
Overview
The MAX3232EUE+T is a low-power RS-232 transceiver that operates from a single 3.0V to 5.5V supply. It utilizes a proprietary low-dropout transmitter output stage and a dual charge pump to provide true RS-232 performance while consuming only 0.3mA of supply current. This device is capable of data rates up to 1Mbps, making it suitable for high-speed serial communication in space-constrained applications.
Why Choose This Part
The IC features a wide 3.0V to 5.5V supply range, allowing it to interface directly with both 3.3V and 5V logic systems without additional level shifters. Its integrated charge pump requires only four small 0.1uF external capacitors, saving significant board space in the 16-pin TSSOP package.
Applications
Getting Started
To implement this transceiver, connect four 0.1uF capacitors to the charge pump pins as specified in the datasheet to generate the required RS-232 voltage rails. Ensure the TTL/CMOS side is connected to your microcontroller UART and the RS-232 side is connected to your DB9 connector or serial bus. For rapid prototyping, many engineers use RS-232 breakout boards featuring this IC to verify communication timing up to 1Mbps.
