MAX232IDR

Overview

The MAX232IDR is a dual EIA-232 driver and receiver integrated circuit manufactured by Texas Instruments. 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 full-duplex communication at data rates up to 120 kb/s. It features two drivers and two receivers housed in a 16-SOIC surface-mount package. The component functions reliably across an extended industrial temperature range from -40°C to +85°C. Power consumption is characterized by a working supply current of 10 mA. The unit includes internal charge pumps for RS-232 voltage generation and provides ESD protection capabilities.

Feature Summary

• Integrates dual drivers and dual receivers for complete RS-232 signal conversion
• Utilizes on-chip charge pumps to generate required voltage levels from a single 5-V supply
• Provides robust electrostatic discharge (ESD) protection for interface reliability

Applications

• Serial port communication interfaces in industrial control systems
• Data transmission links between microcontrollers and PC serial ports
• Modem interfacing in embedded computing devices

Procurement Notes

Verify the specific suffix 'IDR' confirms the industrial temperature grade (-40°C to +85°C) and tape-and-reel packaging format. Confirm RoHS compliance status and REACH registration details against the latest manufacturer documentation. Ensure the ordering part number matches the required 16-SOIC footprint and pinout configuration for the target PCB design.

Selection Notes

Select this component when dual-channel RS-232 communication is required in space-constrained surface-mount designs. The industrial temperature rating makes it suitable for harsh environments compared to commercial variants. Consider the 120 kb/s speed limit and 10 mA current draw during power budgeting. Verify compatibility with the system's 5 V logic levels and available decoupling capacitors for the internal charge pump circuitry.

Part Context

This part belongs to the MAX232 family of multi-channel RS-232 transceivers. It shares functional similarities with the MAX232DR but differs in temperature rating and packaging. The 'I' designation indicates the industrial grade variant, while 'DR' specifies the reel packaging. It serves as a standard interface solution for legacy serial communication protocols in modern electronic assemblies.

Replacement Considerations

MAX232IDRE4 is a verified equivalent part number representing the same functional specification with updated environmental compliance markings.