MAX242CWN

Overview

The MAX242CWN is a +5V-powered, multichannel RS-232 driver and receiver manufactured by Analog Devices Inc./Maxim Integrated. It operates within the EIA/TIA-232E standard using a single +5V supply, eliminating the need for external bipolar voltage sources through integrated charge-pump circuitry. The device features two drivers and two receivers with a maximum data rate of 200kbps. It includes a shutdown mode that reduces power consumption to 5μW. The component is housed in an 18-pin Wide SOIC package and supports an operating temperature range from 0°C to +70°C.

Feature Summary

• Integrated charge pump eliminates the requirement for external bipolar ±12V supplies
• Shutdown mode significantly reduces power consumption for battery-operated applications
• Single +5V supply operation simplifies system design and board space requirements

Applications

• Interface translation between TTL/CMOS logic and RS-232 standards
• Multidrop RS-232 communication networks
• Portable diagnostic equipment requiring low power consumption

Procurement Notes

Verify the specific suffix 'CWN' against official documentation to confirm the 18-pin Wide SOIC package and commercial temperature range. Ensure compatibility with existing PCB footprints and check for lead-free manufacturing compliance if required by local regulations.

Selection Notes

Select this component when designing systems limited to a single +5V power rail. It is suitable for applications needing full-duplex RS-232 communication at speeds up to 200kbps. Consider the shutdown feature for power-sensitive designs where bus idle states are common.

Part Context

This part belongs to the MAX220–MAX249 family of line drivers and receivers designed for EIA/TIA-232E interfaces. The family offers various channel configurations and packages to accommodate different board space and performance requirements while maintaining single-supply operation.

Replacement Considerations

Compatible substitutes include other members of the MAX220–MAX249 family such as the MAX232 or MAX245, provided they match the required pin count and package dimensions. Verify electrical characteristics and control pin configurations before substitution.