MAX3238IPWRQ1

Overview

The MAX3238IPWRQ1 is a multichannel RS-232 line driver and receiver manufactured by Texas Instruments, designed for automotive applications. It operates on a single power supply ranging from 3 V to 5.5 V. The device integrates five drivers and three receivers, supporting full-duplex communication with a data rate of up to 250 kbps. It features ±15-kV electrostatic discharge (ESD) protection on the bus lines according to Human Body Model standards. The component is housed in a 28-pin TSSOP package and functions within an industrial temperature range of -40°C to +85°C.

Feature Summary

• Integrated ESD protection rated at ±15 kV on all RS-232 bus lines
• Multichannel architecture providing five independent drivers and three receivers
• Capacitor-free operation enabled by internal charge pump circuitry
• Automotive qualification compliant with AEC-Q100 standards

Applications

• In-vehicle telematics systems requiring robust serial communication
• Automotive infotainment interfaces connecting head units to peripherals
• Industrial control modules operating under high electromagnetic interference
• Data acquisition systems in harsh environmental conditions

Procurement Notes

Verify the specific suffix 'Q1' confirms automotive grade qualification and AEC-Q100 compliance. Ensure the 'PWR' designation matches the required 28-pin TSSOP surface-mount package. Confirm the manufacturer source is Texas Instruments or an authorized distributor to guarantee authenticity and traceability for safety-critical implementations.

Selection Notes

Select this component when designing systems requiring multiple RS-232 channels without external capacitors. It is suitable for environments demanding high ESD immunity and wide voltage tolerance. Compare against standard commercial grades if automotive reliability certification is mandatory. Verify that the 250 kbps speed meets the system's timing requirements.

Part Context

This part belongs to the MAX3238 family of multichannel transceivers. It shares functional similarities with the MAX3238E but includes specific automotive qualification markings. The IPW variant denotes the plastic small-outline package type. It serves as a bridge between microcontroller logic levels and RS-232 signal voltages.

Replacement Considerations

The MAX3238IDRQ1 offers an alternative pin-compatible option in a smaller SOIC-28 package. The MAX3238EIPWR is the commercial grade equivalent lacking automotive certification. Verify thermal performance and package dimensions before substituting.