MAX243EWE

Overview

The MAX243EWE is a dual driver and dual receiver RS-232 transceiver from the Analog Devices/MAXIM MAX220–MAX249 family. It operates on a single +5V supply, utilizing an integrated charge pump to generate ±10V internally without external bipolar supplies. The device supports data rates up to 200kbps with a typical propagation delay of 3.5µs for drivers and 1µs for receivers. It features a wide RS-232 input voltage range of ±30V and includes 1V of input hysteresis. The component is housed in a 16-pin Wide SOIC package and is rated for operation within a temperature range of 0°C to +70°C.

Feature Summary

• Integrated charge pump circuitry eliminates the need for external bipolar power supplies
• Single +5V supply operation simplifies system design
• High noise immunity provided by 1V input hysteresis
• RS-232 inputs tolerate voltages up to ±30V

Applications

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

Procurement Notes

Verify the specific suffix 'EWE' against official documentation to confirm the 16-pin Wide SOIC package and the 0°C to +70°C commercial temperature grade. Confirm that the ordering information matches the current manufacturer specifications before finalizing procurement plans.

Selection Notes

Select this component when a dual-channel RS-232 interface is required with a single +5V power source. It is suitable for applications where board space is limited due to the integrated charge pump. Ensure the operating environment remains within the specified 0°C to +70°C range for proper functionality.

Part Context

This part belongs to the MAX220–MAX249 family of line drivers and receivers designed for EIA/TIA-232E and V.28/V.24 interfaces. The family offers various channel configurations and packages to accommodate different application requirements while maintaining single-supply operation capabilities.

Replacement Considerations

Direct replacements within the same family include other MAX24x variants or MAX232 series devices. Verify pin compatibility and electrical characteristics such as data rate and supply voltage requirements before substituting.