MAX232IDW

Overview

The MAX232IDW is a dual driver/receiver RS-232 transceiver manufactured by Texas Instruments. It operates from a single 5V supply using internal charge pumps and four external capacitors. The device supports data rates up to 120 kbps and provides full-duplex communication. It features EIA/TIA-232-F compliant voltage levels with ±5V to ±15V output swings. The component is housed in a 16-pin SOIC package and is rated for operation between -40°C and +85°C.

Feature Summary

• Integrates dual drivers and receivers for asynchronous serial communication
• Utilizes internal charge pump circuitry to generate required RS-232 voltages from a single 5V source
• Provides robust electrostatic discharge protection on all pins

Applications

• Connecting microcontrollers or DSPs to standard DB9 serial ports
• Industrial equipment requiring reliable serial data transmission
• Embedded systems interfacing with PC-based control units

Procurement Notes

Verify the specific suffix 'IDW' corresponds to the industrial temperature range (-40°C to +85°C) and SOIC-16 package configuration. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure ordering specifications match the required operational environment and pinout requirements.

Selection Notes

Select this component when designing systems requiring dual-channel RS-232 communication without external negative voltage supplies. It serves as a direct replacement for legacy MAX232 variants in surface-mount designs. Consider the 120 kbps speed limit and 15 mA typical supply current when evaluating power constraints and baud rate requirements for the target application.

Part Context

This part belongs to the MAX232 family of interface ICs, which are widely used for converting TTL/CMOS logic levels to RS-232 standards. The 'I' designation indicates an extended industrial temperature range compared to commercial grade parts. The 'DW' suffix specifies the plastic small-outline package type suitable for automated surface-mount assembly processes.

Replacement Considerations

Compatible alternatives include the MAX232DR and MAX232ESE+. Verify that substitute components maintain identical pin configurations and electrical characteristics to ensure seamless integration into existing PCB layouts without redesign.