MAX3232ESE+T

Overview

The MAX3232ESE+T is a low-power RS-232 transceiver that operates from a 3.0V to 5.5V supply voltage. It uses a proprietary low-dropout transmitter output stage and a dual charge pump to enable true RS-232 performance while maintaining a low supply current. This device is designed for space-constrained and battery-powered applications that require reliable serial communication up to 1Mbps.

Why Choose This Part

The MAX3232ESE+T allows for a single-supply operation across a wide 3.0V to 5.5V range, eliminating the need for multiple power rails. Its internal charge pump requires only four small 0.1uF external capacitors, saving significant PCB real estate. It also features a low 10uA shutdown current to extend battery life in portable designs.

Applications

Getting Started

To implement this transceiver, connect the four charge-pump capacitors (0.1uF) as specified in the datasheet pinout. Ensure the logic-side VCC matches your microcontroller's I/O voltage (3.3V or 5V). For prototyping, use a 16-pin SOIC to DIP adapter or look for breakout boards featuring the MAX3232 to verify signal integrity at high baud rates.

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