MAX3238IDBQ1

Overview

The MAX3238IDBQ1 is an automotive-grade, multichannel RS-232 line driver and receiver manufactured by Texas Instruments. It operates from a single 3-V to 5.5-V supply and integrates charge pump circuitry for generating the required internal voltages. The device features five drivers and three receivers, providing robust signal integrity with ±15-kV electrostatic discharge (ESD) protection per human body model. Designed for harsh environments, it supports data rates up to 250 kbps and functions within an extended industrial temperature range of -40°C to +125°C. The component is housed in a compact 28-pin TSSOP package.

Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for high reliability
• Integrated charge pumps eliminate external capacitor requirements for voltage generation
• High ESD immunity protects sensitive interfaces against electrical stress
• Multichannel architecture consolidates multiple serial communication lines

Applications

• In-vehicle telematics control units
• Automotive gateway modules
• Body control modules requiring serial connectivity

Procurement Notes

Verify that the specific part number suffix corresponds to the Q1 automotive grade designation rather than standard commercial variants. Confirm the package type matches the intended PCB footprint and ensure the manufacturer documentation explicitly lists AEC-Q100 compliance for this exact identifier before finalizing procurement specifications.

Selection Notes

Select this component when designing systems requiring certified automotive interface reliability. Ensure the application environment stays within the specified -40°C to +125°C operating range. Verify that the system power supply remains stable between 3 V and 5.5 V to maintain proper transceiver functionality and signal levels throughout the operational lifecycle.

Part Context

This device belongs to the MAX32xx family of RS-232 transceivers, specifically tailored for automotive electronics. The 'Q1' suffix denotes its qualification under automotive quality standards, distinguishing it from standard commercial versions. It serves as a critical interface component for connecting microcontrollers to serial peripherals in vehicle networks where durability and noise immunity are paramount.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.