MAX221EEAE+

Overview

The MAX221EEAE+ is a single RS-232 transceiver from the MAX221E family, manufactured by Analog Devices/Maxim Integrated. It operates on a +5V supply and features AutoShutdown technology to reduce power consumption. The device provides ±15kV ESD protection on I/O pins and supports data rates up to 250kbps. It includes an internal dual charge pump requiring four 0.1µF capacitors. The component is housed in a 16-pin SSOP package and functions within a temperature range of -40°C to +85°C.

Feature Summary

• AutoShutdown functionality reduces supply current to 1µA when no valid signal is detected
• Integrated dual charge pump generates required voltage levels from a single +5V source
• Enhanced electrostatic discharge protection on transmitter output and receiver input
• Latchup-free design ensures reliable operation under static stress conditions

Applications

• Maintenance and diagnostic ports
• Industrial systems communication interfaces
• Telecommunications equipment
• Set-top boxes

Procurement Notes

Verify the specific ordering suffix EEAE against official documentation to confirm the SSOP package and extended temperature range specifications. Confirm RoHS compliance status through manufacturer datasheets or certified distributor declarations prior to procurement. Ensure compatibility with existing BIOS or operating system configurations if relying on automatic shutdown behaviors without software modification.

Selection Notes

Select this component for applications requiring low-power standby modes without BIOS changes. Verify that the system can accommodate the required four external 0.1µF capacitors for the charge pump circuit. Ensure the operating environment falls within the specified -40°C to +85°C range. Consider the 16-pin SSOP footprint constraints during PCB layout planning.

Part Context

The MAX221EEAE+ belongs to the MAX220–MAX249 family of +5V-powered RS-232 drivers and receivers. This series is designed for communications interfaces where ±12V supplies are unavailable. The MAX221 variant specifically offers a single driver and receiver configuration, distinguishing it from multi-channel counterparts like the MAX222 or MAX223 within the same product line.

Replacement Considerations

Public confirmed substitute part numbers: MAX221ECUE, MAX221ECAE, MAX221EEUE.