MAX3243ECDWR

Overview

The MAX3243ECDWR is a low-power RS-232 transceiver manufactured by Texas Instruments, designed for multi-channel communication applications. It integrates three drivers and five receivers within a single SOIC-28 package, supporting full-duplex data transmission at rates up to 500 kb/s. The device operates on a single power supply ranging from 3 V to 5.5 V, with a typical operating current of 1 mA. It features 15 kV ESD protection on all RS-232 lines and includes a shutdown mode to minimize power consumption. The component functions reliably across an industrial temperature range of 0°C to +70°C.

Feature Summary

• Integrates three independent drivers and five receivers for complex multi-port serial communication.
• Provides robust 15 kV electrostatic discharge protection on transmit and receive lines.
• Includes a dedicated shutdown pin to significantly reduce quiescent current during idle periods.

Applications

• Industrial control systems requiring multiple RS-232 connections
• Portable instrumentation and medical devices
• Modem and communications equipment

Procurement Notes

Verify the suffix 'E' indicates the extended commercial temperature range (0°C to +70°C) and 'W' denotes the SOIC-28 surface-mount package. Confirm RoHS compliance status through official manufacturer documentation or authorized distributor datasheets before finalizing procurement specifications.

Selection Notes

Select this component when designing circuits requiring three transmit and five receive channels in a compact form factor. Ensure the system voltage remains within the 3 V to 5.5 V operational window. Consider the 500 kb/s maximum data rate against application latency requirements and verify that the SOIC-28 footprint aligns with PCB layout constraints.

Part Context

This part belongs to the MAX3243 family of RS-232 transceivers, which are engineered for low-voltage operation. The specific ECDWR variant distinguishes itself through its industrial-grade temperature rating and surface-mount packaging, differentiating it from other variants like the CDWR which may have different thermal characteristics or testing standards.

Replacement Considerations

The MAX3243CDWR serves as a functional substitute within the same series, though it typically covers a narrower commercial temperature range. Verify thermal specifications and package compatibility before swapping between these variants in existing designs.