MAX3221ECAE+T

Overview

The MAX3221ECAE+T is a single-driver, single-receiver RS-232 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It operates from a +3.0V to +5.5V supply and supports data rates up to 250kbps. The device features an AutoShutdown function that reduces supply current to 1µA when no valid signal is detected. It includes ±15kV ESD protection via the Human Body Model and IEC 1000-4-2 standards. The component is housed in a 16-pin SSOP package and functions within a temperature range of 0°C to +70°C.

Feature Summary

• AutoShutdown technology automatically disables charge pumps and drivers to minimize power consumption during idle periods.
• Integrated dual charge pump generates internal ±5.5V rails for true RS-232 signaling using only four small capacitors.
• Enhanced electrostatic discharge protection on all transmitter outputs and receiver inputs ensures robustness against handling stress.

Applications

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

Procurement Notes

Verify the specific suffix 'AE' confirms the 16-SSOP package and the 'C' indicates the commercial temperature range (0°C to +70°C). Confirm RoHS compliance status through official manufacturer documentation or authorized distributors before finalizing procurement specifications.

Selection Notes

Select this component for applications requiring minimal space and low power consumption. Ensure the system design accommodates the required four external 0.1µF capacitors for the charge pump. Verify that the 250kbps maximum data rate meets the communication requirements of the target interface.

Part Context

This part belongs to the MAX3221E/MAX3223E/MAX3243E family of 3V-powered RS-232 transceivers. While the MAX3223E provides two drivers and receivers, and the MAX3243E offers three drivers and five receivers, the MAX3221E specifically contains one driver and one receiver, making it the smallest single-supply option in the series.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.