MAX231EWE+T

Overview

The MAX231EWE+T is a dual-channel RS-232 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It operates from a single +5V supply and utilizes an internal charge pump to generate the required ±10V levels for RS-232 communication, eliminating the need for external bipolar supplies. The device features two drivers and two receivers with full duplex capability. It supports data rates up to 120 kbps and includes integrated capacitors to minimize board space requirements. The component is housed in a 16-pin Wide SOIC package and is rated for operation within the extended industrial temperature range of -40°C to +85°C.

Feature Summary

• Integrated charge pump circuitry eliminates the need for external bipolar power supplies
• Built-in capacitors reduce printed circuit board space requirements
• Single +5V supply operation simplifies system design

Applications

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

Procurement Notes

Verify the specific ordering suffix against official manufacturer documentation to confirm the exact package type and temperature rating. Ensure compatibility with the intended PCB footprint and thermal management requirements before finalizing procurement decisions.

Selection Notes

Select this component when designing systems that require RS-232 connectivity but are constrained by available power rails or physical board area. The integrated capacitor feature makes it suitable for compact designs where external components must be minimized.

Part Context

This part belongs to the MAX220–MAX249 family of +5V-powered multichannel RS-32 drivers and receivers. The family offers various configurations with different numbers of drivers and receivers, catering to diverse interface needs while maintaining a consistent single-supply architecture.

Replacement Considerations

Direct replacements within the same family include the MAX231CWE+T for commercial temperature ranges or other variants like the MAX232 series if external capacitors are acceptable.