MAX221EEUE+

Overview

The MAX221EEUE+ is a single transmit/receive RS-232 transceiver powered by a +5V supply. It operates within a temperature range of -40°C to +85°C and is housed in a 16-pin TSSOP package. The device supports data rates up to 250kbps with a typical receiver propagation delay of 0.15µs. Supply current is typically 1mA during normal operation, dropping to 1µA in shutdown mode. Output voltage swing reaches ±9V, while input voltage range spans -25V to +25V.

Feature Summary

• AutoShutdown technology reduces power consumption by disabling the charge pump and driver when no valid signal is detected.
• Integrated dual charge pumps generate internal positive and negative voltages from a single +5V source without external components.
• INVALID output pin signals the presence or absence of active RS-232 communication levels.

Applications

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

Procurement Notes

Verify the specific suffix EEUE+ corresponds to the extended temperature grade (-40°C to +85°C) and TSSOP package configuration. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure ordering details match the exact part number to avoid functional discrepancies related to thermal ratings or physical footprint.

Selection Notes

Select this component for applications requiring minimal board space and low standby power. The integrated charge pump eliminates the need for external voltage conversion circuitry. Verify that the system can tolerate the wake-up time required for the internal charge pumps to stabilize after exiting AutoShutdown mode before expecting valid data transmission.

Part Context

This device belongs to the MAX221 family of +5V-powered RS-232 transceivers. It serves as a compact alternative to larger packages like SOIC, offering 50% less board space than a 16-pin SO version. The E-grade designation indicates suitability for industrial environments compared to the C-grade commercial variant.

Replacement Considerations

Refer to the MAX221E datasheet for an equivalent RS-232 transceiver featuring enhanced ±15kV ESD protection capabilities. Other members of the MAX220–MAX249 family may provide similar functionality with varying channel counts or package options.