MAX3241ECAI+

Overview

The MAX3241ECAI+ 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. 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 capacitors. ESD protection is rated at ±15kV (Human Body Model) and ±8kV (IEC Contact Discharge). Shutdown mode reduces supply current to less than 1µA.

Feature Summary

• Integrated dual charge pump generates required voltage levels from a single low-voltage supply using minimal external components.
• Enhanced electrostatic discharge protection on all transmitter outputs and receiver inputs ensures robustness against high-voltage static events.
• Dedicated shutdown control pin significantly reduces power consumption for battery-operated portable equipment applications.

Applications

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

Procurement Notes

Verify the specific suffix 'CAI' corresponds to the commercial temperature range (0°C to +70°C) and SSOP-28 packaging when sourcing. Confirm RoHS compliance status (+ suffix) matches project requirements. Check manufacturer documentation for current production status as older variants may be discontinued.

Selection Notes

Select this component for designs requiring a complete serial port with multiple receive lines in a compact surface-mount package. Ensure the system voltage remains within the 3.0V to 5.5V range. Verify that the 250kbps data rate meets interface speed requirements, as higher speeds are not supported by this specific model.

Part Context

This part belongs to the MAX32xxE family of low-power RS-232 transceivers. It shares architectural similarities with the MAX3222E and MAX3232E but provides additional receiver channels suitable for complex peripheral interfaces. The 'E' designation indicates enhanced ESD protection compared to standard industrial versions.

Replacement Considerations

The MAX3241EEAI+ serves as the industrial temperature grade equivalent (-40°C to +85°C). Other family members like the MAX3232E offer fewer drivers/receivers, while the MAX3237E provides different driver/receiver counts and MegaBaud capabilities.