MAX3227CDBR

Overview

The MAX3227CDBR 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 power supply and supports data rates up to 1 Mbps. The device features ±15-kV electrostatic discharge (ESD) protection on both the RS-232 drivers and receivers, ensuring robust performance in harsh environments. It incorporates AutoShutdown Plus technology to reduce power consumption during idle periods or when the cable is disconnected. The component is housed in a 16-pin SSOP package.

Feature Summary

• Integrated ±15-kV ESD protection for enhanced signal integrity and device safety
• AutoShutdown Plus functionality minimizes quiescent current during low-power states
• Single-supply operation compatible with standard 3-V and 5-V logic levels

Applications

• Portable equipment requiring low power consumption
• Modems and fax machines
• Handheld terminals and PDAs
• Industrial control systems with serial communication interfaces

Procurement Notes

Verify the specific suffix 'CDBR' against the manufacturer's official documentation to confirm the commercial temperature range and reel packaging specifications. Ensure compatibility with the target PCB footprint for the 16-lead SSOP package. Cross-reference the datasheet revision date to validate parameter accuracy before finalizing procurement orders.

Selection Notes

Select this component for applications requiring a single RS-232 channel with high ESD tolerance. Compare it against multi-channel alternatives if additional ports are needed. Verify that the 1-Mbps data rate meets system requirements. Consider the thermal characteristics of the SSOP package relative to the operating environment constraints.

Part Context

The MAX3227 belongs to the Maxim Integrated (now Texas Instruments) family of low-power RS-232 transceivers. It is designed to replace older 5-V only devices in modern 3-V systems. The CDBR variant specifically denotes the commercial grade temperature range and tape-and-reel packaging format suitable for automated surface-mount assembly processes.

Replacement Considerations

The TRS3227EIDBR is a documented parameter-equivalent replacement. Verify pinout compatibility and electrical specifications against the original design requirements before substitution.