MAX222CWN

Overview

The MAX222CWN is a +5V-powered, multichannel RS-232 line driver and receiver designed for EIA/TIA-232E and V.28/V.24 communications interfaces. It operates from a single +5V supply by utilizing an integrated charge pump circuitry to generate the required ±10V internal voltages, eliminating the need for external bipolar supplies. The device features two drivers and two receivers with TTL/CMOS-compatible inputs and outputs. It includes a shutdown mode that reduces power consumption significantly. The 'C' suffix indicates a commercial operating temperature range of 0°C to +70°C, and the 'W' suffix denotes a 16-pin Wide SOIC package.

Feature Summary

• Integrated charge pump eliminates the need for external bipolar voltage supplies
• Single +5V supply operation capability
• Shutdown mode for reduced power consumption
• TTL/CMOS logic compatibility

Applications

• Interface translation between TTL/CMOS and RS-232 levels
• Multidrop RS-232 networks
• Portable diagnostics equipment

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm the package type and temperature grade. Confirm component authenticity through authorized distribution channels. Check for any product change notices or end-of-life announcements associated with this part number before finalizing procurement plans.

Selection Notes

Select this component when designing systems requiring RS-232 communication without access to negative voltage rails. Ensure the application environment remains within the specified commercial temperature limits. Verify that the external capacitor values match the datasheet recommendations for stable charge pump operation at the target data rate.

Part Context

This component belongs to the MAX220–MAX249 family of +5V-powered RS-232 transceivers manufactured by Analog Devices Inc./Maxim Integrated. The family offers various channel configurations and package options to suit different board space and interface requirements while maintaining standard RS-232 electrical characteristics.

Replacement Considerations

Direct replacements within the same family include other MAX22x variants with compatible pinouts and electrical specifications. Verify that alternative parts support the required package style and temperature range.