MAX3244EEAI+

Overview

The MAX3244EEAI+ is a low-power 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 a data rate of 250kbps and achieves a typical supply current of 1μA through AutoShutdown Plus technology. It includes ±15kV ESD protection on all I/O pins and utilizes a dual charge pump requiring four 0.1μF capacitors. The component supports an industrial temperature range from -40°C to +85°C.

Feature Summary

• AutoShutdown Plus functionality automatically reduces power consumption when the interface is idle or disconnected.
• Integrated dual charge pump generates internal voltage rails using only four small external capacitors.
• Robust electrostatic discharge protection ensures reliability across transmitter outputs and receiver inputs.
• Dedicated INVALID output pin provides real-time status indication regarding valid RS-232 signal presence.

Applications

• Notebook, subnotebook, and palmtop computers
• Cellular phones and battery-powered equipment
• Hand-held devices and automotive systems

Procurement Notes

Verify the specific suffix EEAI against official manufacturer documentation to confirm the exact package type and temperature rating. Confirm RoHS compliance status directly with the supplier. Ensure the ordering information matches the required driver and receiver count for your design.

Selection Notes

Select this component for applications requiring low standby current and high ESD tolerance. Verify that the 250kbps data rate meets system requirements, as higher-speed variants exist within the same family. Ensure the PCB layout accommodates the necessary charge pump capacitors for stable operation.

Part Context

This part belongs to the MAX3224E/MAX3225E/MAX3226E/MAX3227E/MAX3244E/MAX3245E series. These devices share common architectural features such as the AutoShutdown Plus circuitry and dual charge pump topology. The MAX3244E specifically differentiates itself by providing three drivers and five receivers compared to other members of the family.

Replacement Considerations

MAX3244ECAI+