MAX3243EIDWR

Overview

The MAX3243EIDWR 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 package, supporting full-duplex data transmission at speeds up to 500 kb/s. The device operates on a single power supply ranging from 3 V to 5.5 V, with a typical quiescent current of 1 mA. It features an integrated shutdown mode to minimize power consumption during idle periods. The component provides robust electrostatic discharge protection rated at 15 kV according to the IEC 61000-4-2 standard. It is housed in a 28-pin SOIC package and is suitable for industrial environments operating between -40°C and +85°C.

Feature Summary

• Integrates three independent line drivers and five line receivers for comprehensive multi-channel connectivity.
• Provides high-level ESD protection compliant with IEC 61000-4-2 standards to ensure signal integrity.
• Includes a dedicated shutdown pin to significantly reduce power consumption when the device is not active.

Applications

• Industrial control systems requiring reliable serial communication over long distances.
• Data acquisition equipment needing multiple RS-232 ports for sensor interfacing.
• Embedded computing platforms utilizing multi-channel serial data transfer.

Procurement Notes

Verify the specific suffix 'IDWR' corresponds to the industrial temperature range and reel packaging configuration. Confirm that the 28-pin SOIC footprint matches the target PCB design constraints. Ensure compatibility with the required 3 V to 5.5 V supply rails before finalizing procurement specifications.

Selection Notes

Select this component when three drivers and five receivers are necessary within a single interface solution. The 500 kb/s data rate supports high-speed serial communication needs. The industrial temperature rating makes it suitable for harsher operational environments compared to commercial-grade alternatives.

Part Context

This part belongs to the MAX3243 family of RS-232 transceivers, which are characterized by their multi-channel capabilities and low power consumption. The 'E' designation typically indicates enhanced performance features such as higher ESD tolerance. The 'I' suffix denotes the extended industrial temperature range, while 'DWR' specifies the SOIC package type and tape-and-reel delivery method.

Replacement Considerations

The MAX3243EIDBR serves as a direct alternative offering identical electrical characteristics but utilizes an SSOP-28 package instead of SOIC-28. Designers must verify pin-to-pin compatibility and physical footprint differences when considering substitution.