MAX3238IDBRQ1

Overview

The MAX3238IDBRQ1 is a multichannel RS-232 line driver and receiver manufactured by Texas Instruments, designed for automotive applications. It operates on a single 3-V to 5.5-V power supply and integrates five drivers and three receivers in a full-duplex configuration. The device supports data rates up to 250 kb/s and features a shutdown mode with low operating current of 2 µA. It provides ±15-kV electrostatic discharge (ESD) protection per human body model standards. The component functions within an ambient temperature range of -40°C to +85°C and is housed in a 28-pin SSOP package.

Feature Summary

• Automotive-grade reliability compliant with AEC-Q100 qualification standards
• Integrated charge pump eliminates the need for external capacitors
• Robust ±15-kV ESD protection on all RS-232 lines

Applications

• In-vehicle telematics systems
• Automotive infotainment interfaces
• Body control modules requiring serial communication

Procurement Notes

Verify the specific suffix IDBRQ1 against the manufacturer's official datasheet to confirm the industrial temperature grade and automotive qualification status. Ensure the ordering information matches the exact package type and tape-and-reel specifications required for the assembly process. Cross-reference the RoHS compliance details with the latest environmental declaration provided by Texas Instruments.

Selection Notes

Select this component when designing for automotive environments requiring multiple RS-232 channels with high noise immunity. The integrated charge pump simplifies board layout compared to discrete solutions. Verify that the system voltage remains within the 3-V to 5.5-V range and that the thermal dissipation capabilities of the SSOP-28 package suit the application's power budget.

Part Context

This part belongs to the MAX3238 family of multichannel RS-232 transceivers. The Q1 suffix indicates automotive qualification under AEC-Q100 standards. It shares functional similarities with other MAX32xx series devices but offers a higher channel count suitable for complex vehicle networks. The ID variant specifies the industrial temperature range extension.

Replacement Considerations

Direct pin-compatible alternatives include the SN65C3238DBRQ1 from Texas Instruments. Other multichannel RS-232 transceivers may require schematic modifications due to differences in charge pump architecture or pin assignments.