MAX3237ECAI+

Overview

The MAX3237ECAI+ is a true RS-232 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It operates from a +3.0V to +5.5V supply and features five drivers and three receivers in a 28-pin SSOP package. The device supports data rates up to 250kbps normally, with MegaBaud mode enabling 1Mbps transmission. It includes an internal dual charge pump requiring four 0.1µF capacitors. Shutdown current is typically 10nA when inputs are invalid. ESD protection reaches ±15kV on logic and I/O pins.

Feature Summary

• Features five drivers and three receivers for peripheral applications requiring fast data transfer
• Includes MegaBaud operation mode allowing 1Mbps transmission rates at higher supply voltages
• Provides enhanced electrostatic discharge protection of ±15kV on all logic and RS-232 I/O pins
• Offers ultra-low shutdown supply current down to 10nA typical value

Applications

• Peripheral applications requiring fast data transfer
• Cell-phone data cables
• Notebook, subnotebook, and palmtop computers

Procurement Notes

Verify the ordering suffix indicates lead-free and RoHS compliance. Confirm the package type matches the required 28-pin SSOP form factor. Ensure the temperature range corresponds to commercial specifications. Check for any specific automotive or industrial variants if operating conditions exceed standard limits.

Selection Notes

Select this component when high driver count is necessary for complex peripheral interfaces. Consider the MegaBaud feature if 1Mbps speeds are required within the specified load and voltage constraints. Verify that the low shutdown current meets battery-powered system requirements. Ensure the 28-pin SSOP footprint fits the target PCB layout.

Part Context

This part belongs to the MAX3222E/MAX3232E/MAX3237E/MAX3241E/MAX3246E family of low-power RS-232 transceivers. It shares the same core architecture and ESD protection features as other members but differs in the number of drivers and receivers. The MAX3237E specifically targets applications needing more transmitter channels than the MAX3232E provides.

Replacement Considerations

MAX3237ECAI-T is a compatible variant within the same series.