MAX3241ECWI

Overview

The MAX3241ECWI is a true RS-232 transceiver manufactured by Analog Devices Inc./Maxim Integrated, housed in a 28-pin Wide SOIC 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 while maintaining RS-232 output levels. It incorporates an internal dual charge pump requiring only four 0.1µF external capacitors. ESD protection is rated at ±15kV (Human Body Model) for all I/O pins. Supply current is typically 1mA, dropping to less than 1µA in shutdown mode.

Feature Summary

• Integrated dual charge pump generates required voltage swings using minimal external capacitance
• Enhanced electrostatic discharge protection on all transmitter outputs and receiver inputs
• Low-power shutdown mode maintains active receiver monitoring with ultra-low standby current
• Complementary noninverting receiver outputs allow activity detection during system power-down

Applications

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

Procurement Notes

Verify the specific suffix 'CW' corresponds to the 28-pin Wide SOIC package and industrial temperature range when sourcing. Confirm RoHS compliance status as indicated by the '+' designation in the part number. Ensure the component source provides valid traceability documentation for analog interface ICs.

Selection Notes

Select this component for applications requiring multiple serial ports within space-constrained mobile devices. The wide operating voltage range supports direct connection to 3.3V logic systems without level shifting. Verify that the load capacitance requirements align with the guaranteed 250kbps performance specifications.

Part Context

This device belongs to the MAX32xxE family of low-power RS-232 transceivers. It shares architectural similarities with the MAX3222E and MAX3232E but provides expanded I/O capacity with three drivers and five receivers. The design focuses on reducing external component count through integrated charge pumps and high ESD tolerance.

Replacement Considerations

MAX3241EUI: Identical electrical function in TSSOP-28 package. MAX3241ECAI: Identical electrical function in SSOP-28 package. Verify pinout compatibility and thermal dissipation characteristics when substituting packages.