TIMAX3232ECDR

Overview

The MAX3232ECDR is a dual-channel RS-232 line driver and receiver designed for high-performance serial communication. It operates from a wide supply voltage range of 3V to 5.5V using a high-efficiency charge-pump architecture that requires only four small 0.1uF external capacitors. This transceiver is ideal for bridging the gap between low-voltage microcontrollers and legacy serial peripherals while maintaining compliance with TIA/EIA-232-F standards.

Why Choose This Part

This device features a high 30V/us slew rate and provides robust ESD protection for harsh environments. Its ability to operate at 3.3V eliminates the need for a dedicated 12V power rail common in older RS-232 designs, simplifying the overall power tree.

Applications

Getting Started

To implement this part, place four 0.1uF ceramic capacitors near the charge pump pins (C1+/-, C2+/-, V+, V-) as specified in the datasheet. Ensure the TTL/CMOS side is connected to your MCU UART (TX/RX) and the RS-232 side is routed to a DB9 connector or header. For rapid prototyping, many engineers use the MAX3232 on small breakout boards compatible with standard breadboards.

MAX3232 Family

Comparing specs that differ across variants. The current part is highlighted.

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