MAX232D 5V Dual Channel RS232 Line Driver/Receiver, SOIC-16

The MAX232D from Texas Instruments is a highly integrated, dual-channel RS232 line driver and receiver. This robust IC is engineered to facilitate serial communication by converting TTL/CMOS logic levels to and from standard TIA/EIA-232-F voltage signals, all from a single 5V power supply. Its built-in capacitive voltage generator eliminates the need for dual, higher voltage power supplies, simplifying design and reducing component count in a wide array of electronic applications.

Each of the two onboard receivers is designed to accept inputs of up to ±30V, providing excellent noise immunity and protection in electrically noisy environments. They feature a typical threshold of 1.3V with 0.5V of hysteresis, ensuring reliable data reception. Conversely, the two drivers efficiently convert 5V TTL/CMOS inputs to the full RS232 voltage swing required for compliant communication over longer cable runs.

Key Features & Performance

• Operates from a single 5V supply (4.5V to 5.5V range) using external 1μF charge-pump capacitors.
• Supports data transmission rates of up to 120 kbps, suitable for a broad spectrum of serial communication protocols.
• Features a low typical supply current of 8mA, contributing to energy-efficient designs.
• Offers robust ESD protection of 2 kV (Human Body Model), enhancing the durability and reliability of the end product.
• Housed in a compact, industry-standard SOIC-16 package, making it easy to integrate into PCB layouts.

This transceiver is a fundamental building block for enabling serial communication in digital systems, providing a proven and reliable interface solution that meets established industry standards.