MAX3241EEUI+TG1Z

Overview

The MAX3241EEUI+TG1Z is a true RS-232 transceiver manufactured by Analog Devices Inc./Maxim Integrated. 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 worst-case loads of 3kΩ in parallel with 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 supply current is typically 1mA, dropping to less than 1μA in shutdown mode.

Feature Summary

• Integrated dual charge pump enables true RS-232 performance from a single low-voltage supply using minimal external components.
• Enhanced electrostatic discharge protection safeguards all transmitter outputs and receiver inputs against high-voltage static events.
• Shutdown control significantly reduces power consumption while maintaining active receiver monitoring capabilities.

Applications

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

Procurement Notes

Verify the specific suffixes EEUI+T against official manufacturer documentation to confirm package type, temperature range, and lead-free compliance. Confirm availability status directly with authorized distributors as stock levels fluctuate. Ensure the ordering information matches the required electrical specifications and environmental ratings for the target application.

Selection Notes

Select this component when designing serial communication interfaces for space-constrained mobile devices requiring low power consumption. The integrated charge pump eliminates the need for external voltage converters. Verify that the 250kbps data rate meets system requirements, as higher speeds are not supported by this specific model variant.

Part Context

This part belongs to the MAX32xxE family of low-power RS-232 transceivers designed for portable electronics. It shares functional compatibility with industry-standard parts like the MAX232 but offers superior power efficiency and enhanced ESD protection. The MAX3241E specifically provides a complete serial port solution with multiple drivers and receivers.

Replacement Considerations

MAX3241EUI+T

FAQ

What is the maximum data rate guaranteed for the MAX3241E?

The MAX3241E guarantees operation at data rates of 250kbps while maintaining RS-232 output levels under worst-case load conditions.

How does the shutdown mode affect receiver functionality?

In shutdown mode, the supply current drops below 1μA. The receivers remain active, allowing the device to monitor external signals even when the transmitters are disabled.

What external components are required for the charge pump?

The device requires four small 0.1μF external capacitors to operate the internal dual charge pump from a +3.3V supply.