MAX3241EEWI+T

Overview

The MAX3241EEWI+T 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. The device guarantees data rates up to 250kbps with worst-case loads of 3kΩ parallel to 1000pF. It incorporates an internal dual charge pump requiring only four 0.1µF external capacitors. ESD protection is rated at ±15kV (Human Body Model) and ±8kV (IEC Contact Discharge). Operating temperature range is -40°C to +85°C, with typical supply current of 1mA and shutdown current below 1µA.

Feature Summary

• Proprietary low-dropout transmitter output stage enables true RS-232 performance from a 3.0V to 5.5V supply using an internal dual charge pump.
• Enhanced ESD protection structure safeguards all transmitter outputs and receiver inputs against high-voltage static discharge events.
• Shutdown mode reduces power consumption significantly while allowing receiver outputs to remain active for peripheral monitoring.

Applications

• Notebook, subnotebook, and palmtop computers
• Battery-powered equipment and handheld devices
• High-speed modems and peripherals

Procurement Notes

Verify the specific suffix EE indicates the extended temperature range (-40°C to +85°C) and WI denotes the Wide SOIC package format. Confirm RoHS compliance status via the manufacturer's official documentation before integration. Ensure ordering codes match the exact pin configuration required for the target PCB layout.

Selection Notes

Select this component when designing serial communication interfaces for portable systems requiring low power consumption and robust ESD immunity. The three-driver and five-receiver configuration supports complete serial port implementations. Verify that the external capacitor values align with the specified 0.1µF requirement for optimal charge pump efficiency at the target supply voltage.

Part Context

This device belongs to the MAX32xxE family of enhanced RS-232 transceivers. It shares functional compatibility with industry-standard parts like the MAX232 but offers improved ESD protection and lower power characteristics. The MAX3241 variant specifically provides a full serial port solution with multiple drivers and receivers within a compact surface-mount footprint.

Replacement Considerations

MAX3241EWI+T serves as a direct replacement for older lead-based versions such as MAX3241EWI. Cross-reference with MAX3241ECUI+T if a TSSOP package is preferred instead of the Wide SO form factor. Ensure thermal derating curves are reviewed when substituting packages with different power dissipation capabilities.