MAX3221CPWR

Overview

The MAX3221CPWR is a single-channel RS-232 line driver and receiver manufactured by Texas Instruments. It operates within a supply voltage range of 3 V to 5.5 V and supports data rates up to 250 kbps. The device features one driver and one receiver, providing full-duplex communication capabilities. It is housed in a 16-pin TSSOP package designed for surface-mount technology applications. The component includes integrated charge pumps to generate the necessary voltages for RS-232 signaling without external transformers.

Feature Summary

• Single-channel transceiver architecture for point-to-point serial communication
• Integrated charge pump eliminates need for external inductors or transformers
• Compatible with standard 3.3 V and 5 V power supplies
• Shutdown mode functionality for reduced power consumption

Applications

• Microcontroller UART interface connections
• Industrial control system serial ports
• Modem and peripheral device linking
• Portable battery-powered instrumentation

Procurement Notes

Verify the specific suffix 'CPWR' corresponds to the commercial temperature grade and TSSOP-16 packaging configuration. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure ordering specifications match the required operating temperature range and pinout compatibility for the target PCB layout design.

Selection Notes

Select this component when a single full-duplex RS-232 channel is sufficient for the application. Consider alternative models if higher data rates exceeding 250 kbps are required or if multiple channels are needed. Verify that the 16-pin TSSOP footprint aligns with existing board space constraints and thermal management requirements for the intended environment.

Part Context

This part belongs to the MAX3221 family of low-power RS-232 transceivers. It serves as a direct replacement for legacy drivers like the MAX202 while offering improved performance at lower supply voltages. The CPWR variant specifically denotes the commercial grade version packaged in a thin-shrink small-outline package suitable for dense circuit board layouts.

Replacement Considerations

MAX3221EIPWR: Extended temperature grade equivalent in TSSOP-16. MAX3221IDBR: Industrial grade alternative in SSOP-16 package. SN75C3221PWR: Pin-compatible successor with enhanced ESD protection.