MAX3221IPWRG4

Overview

The MAX3221IPWRG4 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 circuitry 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 control systems requiring robust serial communication interfaces
• Portable smart devices and battery-operated IoT terminals
• Automotive auxiliary electronic control units

Procurement Notes

Verify the G4 suffix indicates lead-free compliance and RoHS standards when sourcing. Confirm the TSSOP-16 package dimensions match the PCB footprint requirements. Ensure the operating temperature range meets the specific environmental conditions of the target application before finalizing procurement decisions.

Selection Notes

Select this component for designs needing a single-supply RS-232 solution with minimal external capacitance. It is suitable for space-constrained layouts due to its small package size. Consider the 250kbps speed limit when evaluating higher baud rate requirements for future-proofing or performance-critical links.

Part Context

This part belongs to the MAX3221 family of single-channel RS-232 transceivers. The IPWR designation specifies the industrial temperature range and surface-mount packaging. The G4 suffix typically denotes lead-free manufacturing processes compliant with international environmental directives, distinguishing it from older non-compliant variants.

Replacement Considerations

The MAX3221EIPWR is listed as a parameter-equivalent alternative. Verify pin compatibility and electrical specifications before substitution. Other family members may offer different channel counts or speed capabilities but require schematic review.