MAX232IDWR

Overview

The MAX232IDWR is a dual RS-232 transceiver manufactured by Texas Instruments, designed for standard communication protocols. It operates within a supply voltage range of 4.5 V to 5.5 V, with a typical operating voltage of 5 V. The device supports data rates up to 120 kb/s and provides full-duplex communication capabilities. It integrates two drivers and two receivers in a single package. The component is housed in an SOIC-16 surface-mount package and functions reliably across an industrial temperature range from -40°C to +85°C. It draws approximately 10 mA of working power supply current.

Feature Summary

• Integrates dual drivers and dual receivers for complete RS-232 signal conversion
• Supports full-duplex data transmission at speeds up to 120 kb/s
• Includes internal charge pump circuitry to generate required voltage levels from a single 5-V supply
• Provides electrostatic discharge (ESD) protection for enhanced reliability

Applications

• Industrial control systems requiring serial communication
• Modem interfacing in embedded devices
• Portable instruments with RS-232 connectivity needs

Procurement Notes

Verify the suffix 'R' indicates reel packaging when ordering. Confirm the specific variant matches the required temperature grade and package type. Ensure compatibility with existing board layouts for SOIC-16 footprints. Check for RoHS compliance status if environmental regulations apply to the final assembly. Validate that the supplier provides authentic Texas Instruments components to avoid counterfeit risks.

Selection Notes

Select this component when a dual-channel RS-232 interface is required for 5-V logic systems. It is suitable for applications needing full-duplex communication without external voltage generation components. Consider the SOIC-16 package constraints for PCB space. Evaluate the 120 kb/s speed limit against system requirements. Ensure the operating environment stays within the specified -40°C to +85°C range for optimal performance.

Part Context

This part belongs to the MAX232 family of interface ICs from Texas Instruments. It is a widely used solution for converting TTL/CMOS levels to RS-232 standards. The IDWR suffix denotes the industrial temperature range and tape-and-reel packaging format. It serves as a foundational component for legacy serial communication interfaces in modern electronic designs.

Replacement Considerations

Direct substitutes include other MAX232 variants such as MAX232IDW or MAX232ISE. Cross-reference pinouts and electrical specifications before substitution. Verify that alternative packages match the physical footprint requirements. Ensure thermal characteristics align with the application's environmental conditions.