MAX3221IPWR

Overview

The MAX3221IPWR is a single-channel RS-232 transceiver manufactured by Texas Instruments, designed for serial communication in industrial and portable applications. It operates on a single 3.0V to 5.5V power supply, eliminating the need for dual voltage rails through integrated charge pumps. The device supports data rates up to 250kbps with a controlled slew rate of 30V/μs to minimize electromagnetic interference. It features ±15kV ESD protection on bus pins and an automatic shutdown mode that reduces quiescent current to 1μA. Packaged in a 16-TSSOP format, it functions within a temperature range of -40°C to +85°C.

Feature Summary

• Integrated dual charge pump circuit enables operation from a single low-voltage power source without external negative voltage generation.
• Built-in electrostatic discharge protection safeguards against high-voltage static events common in industrial environments.
• Automatic power-down mechanism significantly reduces standby current consumption during periods of inactivity.

Applications

• Industrial automation systems including PLCs and remote I/O modules
• Portable smart devices and IoT terminals requiring low-power serial connectivity
• Security communication equipment and access control systems

Procurement Notes

Verify the specific suffix 'IPWR' corresponds to the industrial temperature grade (-40°C to +85°C) and TSSOP-16 package configuration. Confirm RoHS compliance status and ensure the supplier provides original manufacturer documentation to validate authenticity before integration into production designs.

Selection Notes

Select this component when a single-channel RS-232 interface is required with robust ESD tolerance and low standby power. It is suitable for battery-operated devices due to its shutdown feature. Ensure the application does not require higher data rates than 250kbps or additional channel counts provided by multi-driver variants.

Part Context

This part belongs to the MAX3221 family of single-channel RS-232 line drivers and receivers. It shares functional similarities with the SN75C3221 series but offers specific industrial-grade temperature ratings and packaging options tailored for compact PCB layouts in demanding electronic environments.

Replacement Considerations

The MAX3221EIPWR is listed as a parameter-equivalent alternative within the same product family. Verify pin compatibility and electrical specifications before substitution to ensure seamless integration into existing hardware designs.