MAX3243ECPWR

Overview

The MAX3243ECPWR is a low-power, multichannel RS-232 line driver/receiver manufactured by Texas Instruments. It operates from a single 3-V to 5.5-V supply and features three drivers and five receivers for full-duplex communication. The device supports data rates up to 250 kbps with a propagation delay of 0.15 µs. It includes a shutdown mode that reduces power consumption to less than 1 µA. The IC provides ±15-kV IEC ESD protection on all RS-232 lines and operates within an extended temperature range of -40°C to +85°C. It is housed in a 28-pin TSSOP package.

Feature Summary

• Integrated charge pump eliminates the need for external capacitors
• Provides robust ±15-kV IEC ESD protection on signal lines
• Features low-power shutdown mode for energy efficiency
• Supports standard RS-232 voltage levels without external components

Applications

• Industrial control systems requiring reliable serial communication
• Portable instrumentation and medical devices
• Communication equipment and modems
• Data acquisition systems

Procurement Notes

Verify the exact suffix 'ECPWR' to confirm the commercial temperature grade (-40°C to +85°C) and tape-and-reel packaging. Confirm RoHS compliance status through the manufacturer's current documentation. Check for obsolescence notices or lifecycle changes before finalizing procurement plans.

Selection Notes

Select this component when a multichannel RS-232 interface with high ESD immunity is required. Ensure the application fits within the 3-V to 5.5-V supply range. Compare against the MAX3243EIPWR if industrial temperature ratings are needed, or the MAX3243CPWR for commercial grade applications with different thermal constraints.

Part Context

This part belongs to the MAX3243 family of multichannel RS-232 transceivers. It shares functional similarities with the MAX3243EIPWR but differs in temperature rating and packaging style. The series is designed for applications needing multiple serial ports with minimal external component count.

Replacement Considerations

The TRS3243CPWR is a pin-compatible alternative offering similar functionality. Verify electrical specifications and temperature ranges match the original design requirements before substitution.