MAX3232CPWR RS-232 Transceiver IC, 3V to 5.5V, TSSOP-16

The MAX3232CPWR is a high-performance multichannel RS-232 line driver and receiver from Texas Instruments, designed to facilitate robust serial communication. It integrates a dual charge-pump circuit, allowing it to generate the necessary RS-232 voltage levels from a single, low-voltage supply ranging from 3V to 5.5V. This eliminates the need for a separate, higher-voltage power source, making it highly efficient for modern, power-conscious designs.

A key feature of this transceiver is its exceptional ±15kV ESD protection (using the Human Body Model) on the RS-232 bus terminals (including GND). This robust protection safeguards the serial-port connection from electrostatic discharge events that commonly occur during handling or in operational environments. The device is fully compliant with industry standards, meeting or exceeding the requirements of TIA/EIA-232-F and ITU V.28.

Performance and Specifications

• The IC supports data signalling rates of up to 250kbps with a maximum driver output slew rate of 30V/µs.
• It features two drivers and two receivers in a single compact package.
• It boasts a typical low supply current of just 300µA, contributing to energy efficiency in portable applications.
• Operation requires only four small 0.1µF external capacitors.
• It can accept 5V logic inputs even when powered from a 3.3V supply, providing flexibility in mixed-voltage systems.
• This is a green product, manufactured with no antimony or bromine (no Sb/Br).

Handling and Applications

While the bus terminals feature strong ESD protection, the device itself has limited built-in ESD protection for its MOS gates. During storage or handling, it is recommended to short the leads together or place the device in conductive foam to prevent electrostatic damage.

This transceiver is ideal for a wide range of applications where reliable serial data