MAX3243ECPW

Overview

The MAX3243ECPW is a low-power, multi-channel RS-232 line driver and receiver manufactured by Texas Instruments. It integrates three drivers and five receivers within a single TSSOP-28 package, supporting full-duplex communication at data rates up to 250 kb/s. The device operates on a single 3 V to 5.5 V power supply and includes an integrated shutdown mode that reduces supply current to approximately 1 µA. It features ±15 kV electrostatic discharge (ESD) protection on all RS-232 bus pins, ensuring robust performance in industrial environments.

Feature Summary

• Integrates three independent line drivers and five line receivers for multi-port serial communication
• Provides ±15 kV human-body model ESD protection on all RS-232 signal lines
• Features a dedicated shutdown pin to minimize power consumption during idle periods
• Operates from a single 3 V to 5.5 V supply using internal charge pump circuitry

Applications

• Industrial control systems requiring reliable serial communication
• Portable battery-powered equipment with space constraints
• Computer peripheral interfaces and modem connections
• Embedded systems needing multiple RS-232 ports

Procurement Notes

Verify the specific suffix CPW indicates commercial temperature range and TSSOP packaging. Confirm RoHS compliance status through official documentation. Check for end-of-life notices as older variants may be discontinued. Ensure ordering quantities match tube packaging specifications provided by the manufacturer.

Selection Notes

Select this component when three transmit and five receive channels are required in a compact surface-mount package. Compare against MAX3243EIDBR if higher data rates or wider temperature ranges are needed. Verify voltage levels match the target system's logic requirements. Consider thermal dissipation capabilities within the TSSOP-28 enclosure for high-density designs.

Part Context

This part belongs to the MAX3243 family of RS-232 transceivers designed for multi-channel applications. It shares core functionality with other variants like MAX3243EIPWR but differs in package type and temperature rating. The CPW suffix specifically denotes the commercial grade operating range and thin-shrink small-outline package format used in consumer and light industrial electronics.

Replacement Considerations

MAX3243EIPWR offers identical electrical characteristics in a TSSOP-28 package with extended temperature range. MAX3243ECDWR provides the same functionality in a SOIC-28 package. Cross-reference datasheets to ensure pinout compatibility and thermal performance meet design requirements before substitution.