MAX3244EEWI+

Overview

The MAX3244EEWI+ is a low-power RS-232 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It features three drivers and five receivers with full-duplex communication capability. The device operates on a single +3.0V to +5.5V supply and achieves a typical supply current of 1µA through AutoShutdown Plus technology. It guarantees a maximum data rate of 250kbps and includes ±15kV ESD protection on I/O pins. The component is housed in a 28-pin SO-Wide package and supports an operating 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 required RS-232 voltage levels using only four small capacitors.
• Dedicated R2OUTB pin provides continuous monitoring of receiver activity during shutdown states.

Applications

• Notebook, subnotebook, and palmtop computers
• Cellular phones and handheld equipment
• Battery-powered peripherals and printers

Procurement Notes

Verify the specific suffix 'EWI+' against the manufacturer's official documentation to confirm the exact package type and lead-free status. Ensure that any ordering suffixes do not alter the electrical characteristics unless explicitly stated in the datasheet. Cross-reference the component number with authorized distributors to confirm availability and compliance with regional regulations.

Selection Notes

Select this component for applications requiring low standby power and automatic wake-up capabilities. The MAX3244 variant is suitable for systems needing up to 250kbps data rates. Consider the MAX3245 if higher speed operation up to 1Mbps is required. Verify that the external capacitor values match the supply voltage requirements specified in the datasheet.

Part Context

This part belongs to the MAX32xx family of RS-232 transceivers designed for portable electronics. It shares core architecture with the MAX3224–MAX3227 series but offers specific driver/receiver counts and data rate capabilities. The EE suffix indicates an extended industrial temperature range, while WI denotes the wide-body SOIC package configuration.

Replacement Considerations

The MAX3245EETJ+ serves as a functional substitute within the same family, offering identical pinout and features but supporting a guaranteed data rate of 1Mbps instead of 250kbps. Both components share the same AutoShutdown Plus mechanism and package options.