MAX3238ECPWR

Overview

The MAX3238ECPWR is a multichannel RS-232 line driver and receiver manufactured by Texas Instruments. It operates from a single 3-V to 5.5-V power supply and supports data rates up to 250 kbps. The device integrates five drivers and three receivers in a 28-pin TSSOP package. It provides ±15-kV electrostatic discharge (ESD) protection on both the logic and RS-232 lines, ensuring robust performance in harsh environments. The component complies with EIA/TIA-232-F standards and features Schmitt trigger inputs for noise immunity.

Feature Summary

• Integrates five independent drivers and three receivers for comprehensive serial communication support.
• Provides ±15-kV ESD protection on all signal pins to enhance system reliability.
• Operates efficiently from a single low-voltage power supply ranging from 3 V to 5.5 V.

Applications

• Industrial control systems requiring reliable serial communication interfaces.
• Portable equipment utilizing battery-powered single-supply operation.
• Data acquisition systems needing multiple RS-232 channels with high ESD tolerance.

Procurement Notes

Verify the specific suffix 'CPWR' against the manufacturer's current datasheet to confirm the commercial temperature range and tape-and-reel packaging configuration. Ensure the ordering part number matches the exact pinout and electrical specifications required for the design. Cross-reference with official Texas Instruments documentation to validate availability status and any recent product change notifications affecting this specific variant.

Selection Notes

Select this component when designing circuits that require multiple RS-232 transceivers within a limited board space. The 28-pin TSSOP package offers a compact solution for applications where size constraints are critical. Consider the ±15-kV ESD protection feature if the interface connects to external connectors or cables exposed to static discharge risks. Verify that the 250 kbps data rate meets the throughput requirements of the target application.

Part Context

This device belongs to the MAX3238 family of multichannel RS-232 transceivers. It shares functional similarities with other members like the MAX3238EIPWR but differs in package type and temperature rating. The CPWR suffix indicates a specific plastic small-outline package variant designed for surface-mount assembly. It serves as a direct replacement for legacy multi-channel RS-232 solutions in modern low-power designs.

Replacement Considerations

The TRS3238ECDWR is a documented alternative offering similar functionality. Verify compatibility regarding operating voltage ranges, pin assignments, and thermal performance before substitution.