MAX3221EIPWG4

Overview

The MAX3221EIPWG4 is a single-channel RS-232 line driver and receiver manufactured by Texas Instruments. It operates from a single 3-V to 5.5-V supply and includes internal charge pumps to generate ±5.5-V signals for EIA/TIA-232-F communication. The device features AutoShutdown, which reduces supply current to 1 µA when the transmitter is disabled. It provides ±15-kV electrostatic discharge (ESD) protection on all RS-232 lines. The component is housed in a 16-pin TSSOP package.

Feature Summary

• AutoShutdown function minimizes power consumption during idle periods
• Integrated charge pumps eliminate external voltage conversion components
• Robust ±15-kV ESD protection ensures signal line reliability

Applications

• Portable equipment requiring low-power serial communication
• Industrial control systems with RS-232 interfaces
• Modem and fax machine connections

Procurement Notes

Verify the complete part number including suffixes such as IPW and G4 against official manufacturer documentation to ensure correct package type and environmental compliance. Confirm RoHS status and lead-free specifications prior to ordering. Cross-reference datasheet revisions to validate pinout compatibility and electrical characteristics for the specific manufacturing batch.

Selection Notes

Select this component for applications requiring a single transceiver channel with minimal standby current. Ensure the system operates within the 3-V to 5.5-V supply range. Verify that the required data rate does not exceed the specified limits for the selected operating voltage. Check package availability and thermal requirements for the target PCB layout.

Part Context

This part belongs to the MAX3221 family of single-channel RS-232 transceivers. It is an enhanced version featuring improved ESD protection and lower quiescent current compared to earlier generations. The G4 suffix indicates lead-free construction and RoHS compliance, aligning with modern environmental standards for electronic components.

Replacement Considerations

MAX3221EIPWR serves as a direct functional equivalent within the same product line. TRS3221EIPWR is another compatible alternative offering similar electrical performance. Verify pin compatibility and package dimensions before substituting.