MAX3243EIDW

Overview

The MAX3243EIDW is a low-power RS-232 transceiver manufactured by Texas Instruments, housed in a 28-pin SOIC package. It integrates three drivers and five receivers to support full-duplex communication with data rates up to 500 kb/s. The device operates on a single power supply ranging from 3 V to 5.5 V, consuming only 1 mA of quiescent current. It features an integrated shutdown mode for extended battery life in portable applications. The transceiver provides 15 kV electrostatic discharge (ESD) protection on all pins, ensuring robust performance in harsh environments.

Feature Summary

• Integrates three independent drivers and five independent receivers within a single IC.
• Features a dedicated shutdown pin that reduces supply current to less than 1 µA.
• Provides 15 kV human-body model ESD protection across all RS-232 lines.

Applications

• Portable equipment requiring low-power serial communication
• Industrial control systems utilizing RS-232 interfaces
• Modems and fax machines

Procurement Notes

Verify the specific suffix 'IDW' corresponds to the industrial temperature range (-40°C to +85°C) and SOIC-28 package configuration. Confirm RoHS compliance status through official manufacturer documentation or authorized distributor datasheets before procurement. Ensure the ordering part number matches the required voltage and speed specifications.

Selection Notes

Select this component when designing circuits requiring multiple transmit and receive channels without external charge pumps. Compare against the standard MAX3243 if higher data rates are unnecessary, as the 'E' variant supports speeds up to 500 kb/s. Verify that the 28-pin SOIC footprint fits the PCB layout constraints and thermal requirements for the intended operating environment.

Part Context

This part belongs to the MAX3243 family of multi-channel RS-232 transceivers. The 'E' designation indicates enhanced performance characteristics, specifically supporting data rates up to 500 kb/s compared to the 250 kb/s limit of the base MAX3243. The 'I' suffix denotes the industrial temperature grade, while 'DW' specifies the plastic small-outline package.

Replacement Considerations

The MAX3243IDW serves as a direct functional replacement for the older MAX3243IDW variant, offering improved data rate capabilities. Designers should verify pin compatibility and electrical parameters when substituting between the standard and enhanced series variants.