MAX3221EIPWR

Overview

The MAX3221EIPWR is a single RS-232 transceiver manufactured by Texas Instruments, designed for full-duplex data communication. It operates within a supply voltage range of 3V to 5.5V and supports data rates up to 250kbps. The device integrates one driver and one receiver in a 16-TSSOP package with a width of 4.40mm. It functions across an extended temperature range from -40°C to +85°C. Key electrical characteristics include a 500mV receiver hysteresis and compliance with RoHS3 standards. The component utilizes surface-mount technology and maintains low operating power consumption suitable for portable applications.

Feature Summary

• Integrates a single RS-232 driver and receiver for full-duplex communication
• Operates on a single 3V to 5.5V power supply without requiring external charge pumps
• Provides robust ESD protection rated at 15kV according to Human Body Model standards
• Features low power consumption with shutdown mode capabilities for battery efficiency

Applications

• Portable equipment requiring serial communication interfaces
• Handheld terminals and mobile computing devices
• Industrial control systems utilizing RS-232 protocols
• Modems and fax machines for data transmission

Procurement Notes

Verify the specific suffix 'E' indicates the extended temperature grade (-40°C to +85°C) compared to standard industrial grades. Confirm the 'IPWR' designation corresponds to the 16-TSSOP package variant. Ensure compatibility with RoHS3 regulations if required by your manufacturing process. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components. Check for any recent Product Change Notices regarding assembly sites or marking changes.

Selection Notes

Select this component when a single channel of RS-232 communication is sufficient for the design. Consider the 250kbps data rate limit against higher-speed requirements that might necessitate alternative models like the MAX3222 or MAX3223. Evaluate the 16-TSSOP footprint availability against existing PCB layout constraints. Verify that the 3V to 5.5V input voltage range aligns with the system's power supply architecture. Assess the need for ESD protection levels based on the intended environmental exposure.

Part Context

The MAX3221 belongs to the broader MAX3221 family of RS-232 transceivers from Texas Instruments. This family includes variants such as the MAX3221EIPW and MAX3221IPWR, which may differ in temperature ranges or packaging details. The component serves as a foundational interface solution for legacy serial communication needs in modern embedded systems. It is often compared with similar single-channel transceivers from other manufacturers offering comparable pinouts and functionality.

Replacement Considerations

The SN75C3221PWR is documented as an alternative RS-232 transceiver from Texas Instruments. Verify pinout compatibility and electrical specifications before substitution. The TRS3221EIPWR is another related model within the same product ecosystem. Ensure that any replacement matches the required temperature grade and package dimensions.