MAX3241EEAI+T

Overview

The MAX3241EEAI+T is a true RS-232 transceiver manufactured by Analog Devices Inc./Maxim Integrated, housed in a 28-pin SSOP 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 worst-case loads of 3kΩ parallel to 1000pF. It incorporates an internal dual charge pump requiring only four 0.1μF external capacitors. Supply current is typically 1mA, dropping to less than 1μA in shutdown mode. ESD protection reaches ±15kV via the Human Body Model and ±8kV via IEC 1000-4-2 Contact Discharge.

Feature Summary

• Integrated dual charge pump generates required RS-232 voltage levels using minimal external capacitance.
• Enhanced electrostatic discharge protection ensures robustness against high-voltage static events.
• Shutdown control significantly reduces power consumption while maintaining receiver activity monitoring capabilities.

Applications

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

Procurement Notes

Verify the specific suffix EEAI+T corresponds to the extended temperature range (-40°C to +85°C) and SSOP-28 packaging. Confirm lead-free status through RoHS compliance documentation provided by the manufacturer. Ensure ordering quantities match standard reel or tube configurations available from authorized distributors.

Selection Notes

Select this component when designing serial interfaces for space-constrained mobile devices requiring low power consumption. The inclusion of five receivers allows connection to multiple peripherals within a single notebook system. Verify that the application environment requires operation down to -40°C to justify the 'E' grade selection over commercial variants.

Part Context

This part belongs to the MAX32xxE family of low-power RS-232 transceivers designed for portable electronics. It shares architectural similarities with the MAX3222E and MAX3232E but provides expanded I/O capacity with three drivers and five receivers. The series emphasizes miniaturization and battery life extension through proprietary low-dropout transmitter stages.

Replacement Considerations

MAX3241CAI+T (Commercial Temperature Range)

FAQ

How does the shutdown mode affect receiver outputs?

In shutdown mode, the transmitters enter a high-impedance state, but the receivers remain active to monitor external signals while consuming minimal current.

What is the maximum data rate guaranteed under standard conditions?

The device guarantees operation at data rates up to 250kbps with worst-case loads of 3kΩ in parallel with 1000pF.