MAX3248ECAI

Overview

The MAX3248ECAI+ is a low-power, true RS-232 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It operates from a single +3.0V to +5.5V supply and features one driver and three receivers for full-duplex communication. The device supports data rates up to 250kbps and includes an automatic shutdown mode that reduces supply current to typically 10nA when no valid signal is present. It provides ±15kV electrostatic discharge (ESD) protection on all I/O and logic pins. The component is housed in a 28-pin SSOP package.

Feature Summary

• Automatic shutdown circuitry minimizes power consumption during idle periods
• Robust ±15kV ESD protection on both I/O lines and logic inputs
• True RS-232 signaling with standard voltage levels for reliable communication

Applications

• Battery-powered portable equipment requiring extended standby life
• Notebook and subnotebook computer serial ports
• Handheld terminals and mobile communication devices

Procurement Notes

Verify the complete part number suffix, such as '+', against official manufacturer documentation to confirm RoHS compliance status. Confirm package availability and lead times directly with authorized distributors, as stock levels fluctuate. Ensure the specific temperature grade matches the intended operational environment requirements before finalizing procurement orders.

Selection Notes

Select this component when designing systems requiring minimal quiescent current in standby modes. Verify that the application utilizes only one transmit channel and up to three receive channels, as additional drivers are not available. Ensure external capacitors meet the specified voltage ratings and tolerance requirements for stable operation at the target data rate.

Part Context

This device belongs to the MAX32xxE family of low-power RS-232 transceivers designed for space-constrained and battery-operated applications. It shares architectural similarities with the MAX3241E and MAX3243E but offers a distinct configuration of one driver and three receivers. The family emphasizes ultra-low power consumption through advanced shutdown techniques while maintaining robust ESD protection standards.

Replacement Considerations

The MAX3248EEAI+ serves as a verified industrial temperature grade alternative within the same package type. Designers should verify pin compatibility and electrical parameter alignment before substituting components across different temperature ranges or package variations.