MAX221CUE

Drivers, Receivers, Transceivers Overview

The MAX221CUE is a single RS-232 transceiver from the Analog Devices / Maxim Integrated MAX220–MAX249 family, designed for EIA/TIA-232E and V.28/V.24 interfaces without requiring ±12V supplies. It operates on a single +5V power supply with a maximum voltage of 5.5V and minimum of 4.5V. The device supports data rates up to 250kbps with full-duplex communication. It features one driver and one receiver, housed in a 16-TSSOP package (0.173" width). The operational temperature range is 0°C to +70°C, and it includes an auto-shutdown function.

Drivers, Receivers, Transceivers Feature Summary

• Auto-shutdown functionality reduces power consumption during idle periods
• Single +5V operation eliminates need for external negative voltage supplies
• Integrated charge pump generates required RS-232 signal levels

Drivers, Receivers, Transceivers Applications

• EIA/TIA-232E serial communication interfaces
• V.28/V.24 modem connections
• Portable battery-powered equipment requiring low power standby

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix 'C' indicates commercial temperature range (0°C to +70°C) against the official datasheet. Confirm the package type is 16-TSSOP. Check current production status as older Maxim parts may have limited availability or obsolescence notices. Ensure RoHS compliance matches the '+T' or '+' designation if lead-free components are required.

Drivers, Receivers, Transceivers Selection Notes

Select this component when designing systems with single +5V power rails where space constraints prevent using discrete charge pumps. Compare against MAX220 or MAX232 variants if different pinouts or higher noise immunity are needed. Verify that the 250kbps speed meets application requirements. Consider the MAX221EE variant if extended industrial temperature ranges (-40°C to +85°C) are necessary.

Drivers, Receivers, Transceivers Part Context

The MAX221CUE belongs to the broader MAX220–MAX249 family of multichannel RS-232 drivers and receivers. This family is characterized by internal charge pumps that allow operation from a single +5V supply. The MAX221 specifically provides one driver and one receiver, making it suitable for simple point-to-point serial links compared to multi-channel counterparts like the MAX232.

Drivers, Receivers, Transceivers Replacement Considerations

The MAX221CUE+ is the lead-free equivalent version. The MAX221EEAE+ offers the same electrical performance but in an SSOP-16 package with an extended industrial temperature range.