MAX3232EIDR
Overview
The MAX3232EIDR is a dual-channel RS-232 transceiver designed for low-power communications in systems with 3.0V to 5.5V supplies. It features enhanced ESD protection on the bus-facing pins and maintains high-speed data rates while drawing only 0.3mA of typical supply current. This device is an industry standard for bridging legacy serial protocols with modern low-voltage microcontrollers.
Why Choose This Part
The device utilizes a proprietary low-dropout output stage and a dual charge pump to provide true RS-232 performance from a single 3V supply. Its internal charge pumps require only four small 0.1uF external capacitors, saving significant PCB area. Additionally, the integrated ESD protection on RS-232 pins reduces the need for external transient voltage suppressors.
Applications
Key Specifications
Getting Started
When integrating this SOIC-16 package, ensure the four charge-pump capacitors are placed as close to the IC pins as possible to minimize EMI and ripple. Verify that your UART logic levels (3.3V or 5V) match the VCC supplied to the MAX3232EIDR to ensure proper switching thresholds. For prototyping, standard 0.1-inch pitch breakout boards are widely available for this pinout.
MAX3232 Family
