MAX232AEWE+T

Overview

The MAX232AEWE+T is a +5V-powered, multichannel RS-232 driver and receiver integrated circuit manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range of 4.5 V to 5.5 V with a typical operating current of 10 mA. The device supports full-duplex communication at data rates up to 200 kb/s. It features two drivers and two receivers housed in a 16-pin SO-Wide package. The component functions across an extended temperature range from -40°C to +85°C.

Feature Summary

• Integrates dual charge-pump circuits to generate internal ±10V levels from a single +5V supply, eliminating the need for external bipolar power sources.

Applications

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

Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging when sourcing components. Confirm that the '+T' designation aligns with lead-free manufacturing requirements. Cross-reference the manufacturer part number against official distributor catalogs to ensure authenticity and traceability before finalizing procurement orders.

Selection Notes

Select this component for applications requiring standard RS-232 signaling without ESD protection features found in EE variants. Ensure the design accommodates four external capacitors (C1-C4) required for the internal charge pump operation. Verify that the 200 kb/s data rate meets system timing requirements and that the wide SOIC footprint fits the PCB layout constraints.

Part Context

This device belongs to the MAX220–MAX249 family of line drivers and receivers designed for EIA/TIA-232E and V.28/V.24 interfaces. The MAX232A variant specifically offers improved performance over the original MAX232 while maintaining pin compatibility. It serves as a foundational interface solution for legacy serial communication protocols in modern embedded systems.

Replacement Considerations

The MAX232EWE+T provides identical functionality with enhanced ESD protection capabilities. For designs requiring lower power consumption or wider voltage input ranges, the MAX3232 series represents a compatible alternative with different electrical characteristics.