MAX3241EEWI+

Overview

The MAX3241EEWI+ is a true RS-232 transceiver manufactured by Analog Devices Inc./Maxim Integrated, housed in a 28-pin Wide SO package. It operates on a single +3.0V to +5.5V supply and features three drivers and five receivers for full-duplex communication. The device guarantees data rates up to 250kbps with ±5V output swings. It includes an internal dual charge pump requiring four 0.1µF capacitors. ESD protection reaches ±15kV (HBM) and ±8kV (IEC Contact). Operating temperature ranges from -40°C to +85°C, with typical supply current at 1mA and shutdown current below 1µA.

Feature Summary

• Integrated dual charge pump enables true RS-232 performance from a single low-voltage supply without external inductors.
• Enhanced electrostatic discharge protection safeguards all transmitter outputs and receiver inputs against high-voltage static events.
• Shutdown mode significantly reduces power consumption while maintaining active receiver monitoring capabilities.

Applications

• Notebook, subnotebook, and palmtop computers
• Battery-powered portable equipment
• Cell-phone data cables

Procurement Notes

Verify the specific suffix EEWI+ corresponds to the required Wide SO-28 package and industrial temperature range (-40°C to +85°C). Confirm RoHS compliance status via the manufacturer's latest documentation before finalizing procurement orders.

Selection Notes

Select this component when designing serial interfaces for space-constrained mobile devices requiring robust ESD immunity. Ensure the application supports the necessary four external charge-pump capacitors and operates within the specified voltage and temperature limits.

Part Context

This part belongs to the MAX32xxE family of enhanced RS-232 transceivers. It shares functional compatibility with industry-standard parts like the MAX232 but offers superior low-power operation and higher ESD tolerance suitable for modern portable electronics.

Replacement Considerations

Direct pin-compatible replacements include other variants within the MAX3241E series, such as MAX3241ECAI+ or MAX3241ECUI+, provided the package type matches the design constraints.