MAX232AEWE+

Overview

The MAX232AEWE+T is a dual-channel RS-232 transceiver designed for EIA/TIA-232E and V.28/V.24 communication interfaces. It operates on a single +5V power supply, utilizing an internal charge pump to generate the required ±10V levels without external bipolar supplies. The device features two drivers and two receivers with full-duplex capability. Key electrical parameters include a data rate of 200 kb/s, a supply voltage range of 4.5V to 5.5V, and a typical operating current of 10 mA. It supports a wide industrial temperature range from -40°C to +85°C and is housed in a 16-pin SO-Wide package.

Feature Summary

• Integrated charge pump circuitry eliminates the need for external bipolar power supplies
• Enables single-supply operation directly from a +5V source
• Provides full-duplex communication via two independent drivers and receivers

Applications

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

Procurement Notes

Verify the specific suffix 'WE+' corresponds to the Wide SOIC package and lead-free RoHS compliance status as defined by Analog Devices. Confirm that the component is currently available through authorized distributors, as availability may vary by region. Ensure the ordering information matches the exact pinout and thermal characteristics specified in the official datasheet before finalizing procurement.

Selection Notes

Select this component when designing systems that require RS-232 connectivity but lack access to negative voltage rails. The integrated charge pump simplifies the schematic by removing the need for external capacitors larger than 0.1µF compared to older variants. Verify that the 200 kb/s data rate meets the application's speed requirements and that the -40°C to +85°C temperature range covers the intended operating environment.

Part Context

This part belongs to the MAX220–MAX249 family of line drivers and receivers manufactured by Analog Devices (formerly Maxim Integrated). The 'A' designation typically indicates an advanced or improved version within the series, often featuring optimized performance metrics such as higher data rates or lower power consumption compared to standard counterparts like the MAX232CWE.

Replacement Considerations

Direct replacements include other members of the MAX232 family such as the MAX232EEWE+T, which offers similar functionality but may differ in ESD protection ratings or propagation delay specifications. Always verify pin compatibility and electrical characteristics against the target system requirements before substitution.