MAX3238IPWRG4Q1

Overview

The MAX3238IPWRG4Q1 is a multichannel RS-232 line driver and receiver manufactured by Texas Instruments, designed for automotive applications under AEC-Q100 qualification. It operates on a single 3-V to 5.5-V power supply and features five drivers and three receivers in a 28-pin TSSOP package. The device supports data rates up to 250 kb/s with full-duplex communication. It includes integrated ESD protection rated at +/-15 kV (HBM) and offers a shutdown mode to minimize operating current to approximately 2 mA. The component functions within an extended temperature range of -40°C to +85°C.

Feature Summary

• Automotive-grade reliability certified to AEC-Q100 standards
• Integrated high-voltage electrostatic discharge protection
• Low-power shutdown capability for energy conservation
• Multichannel configuration supporting multiple serial ports

Applications

• Automotive telematics systems
• In-vehicle infotainment interfaces
• Electronic control unit communication networks
• Industrial automotive diagnostic tools

Procurement Notes

Verify the specific suffix G4 indicates lead-free and RoHS compliance status as per manufacturer documentation. Confirm the Q1 designation aligns with required automotive qualification standards for the target application. Ensure the TSSOP-28 package dimensions match the PCB footprint constraints. Validate that the operating voltage range covers the system's supply variations.

Selection Notes

Select this component when multiple RS-232 channels are required in a space-constrained automotive environment. The 250-kb/s speed is suitable for standard diagnostic and control protocols. Consider the 2-mA shutdown current if power management during idle states is critical. Ensure the design accommodates the external capacitor requirements typical for charge-pump circuits in this family.

Part Context

This part belongs to the MAX3238 family of multichannel transceivers from Texas Instruments. It shares functional similarities with other automotive-grade RS-232 devices like the MAX3232EIPWRQ1 but offers higher channel density. The IPWG4Q1 variant specifically denotes the automotive qualification and lead-free packaging within the broader MAX3238 product line.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Verify compatibility with existing designs against similar Texas Instruments automotive RS-232 transceivers before substitution.