MAX242CWN+T

Overview

The MAX242CWN+T is a +5V-powered, multichannel RS-232 line driver and receiver manufactured by Analog Devices Inc. (formerly Maxim Integrated). It operates from a single +5V supply using an integrated charge pump to generate the required ±10V internal voltages, eliminating the need for external bipolar supplies. The device features two drivers and two receivers with tristatable outputs and includes a shutdown mode that reduces power consumption to 5μW. It complies with EIA/TIA-232E standards and supports data rates up to 116kbps.

Feature Summary

• Integrated charge pump circuitry eliminates the need for external capacitors or bipolar ±12V supplies
• Enables single +5V supply operation for simplified system design
• Provides a low-power shutdown mode reducing current consumption to 5μW
• Features tristatable receivers active under shutdown conditions

Applications

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

Procurement Notes

Verify the component authenticity through authorized distributors or direct manufacturer channels. Confirm the package type matches the Wide SOIC-18 specification and ensure the temperature grade corresponds to the commercial range of 0°C to +70°C. Cross-reference the ordering suffix with official documentation to validate specific manufacturing lot details.

Selection Notes

Select this component when board space is limited and external charge pump capacitors are undesirable. It is suitable for applications requiring a single +5V supply without generating high-voltage rails. Consider alternative models within the MAX220–MAX249 family if higher data rates or different pin configurations are required.

Part Context

This part belongs to the MAX220–MAX249 family of +5V-powered, multichannel RS-232 drivers and receivers. The family offers various channel counts and control options, designed for EIA/TIA-232E and V.28/V.24 communications interfaces where ±12V supplies are unavailable.

Replacement Considerations

Compatible substitutes include other members of the MAX220–MAX249 family such as the MAX232A or MAX243, provided they match the required channel count and package dimensions. Verify electrical characteristics and control pin configurations before substitution.