MAX232EEWE+T

Overview

The MAX232EEWE+T is a dual driver/receiver RS-232 transceiver from the MAX202E–MAX213E family, manufactured by Analog Devices Inc./Maxim Integrated. It operates on a single +4.5V to +5.5V supply using an integrated charge pump to generate ±10V internal levels. The device provides full duplex communication with two drivers and two receivers, supporting data rates up to 120kbps. It features ±15kV ESD protection on all pins per Human Body Model standards. Operating temperature range is -40°C to +85°C. The component is housed in a 16-pin Wide SOIC package.

Feature Summary

• Integrated charge pump circuitry eliminates the need for external bipolar power supplies
• High electrostatic discharge protection rated at ±15kV Human Body Model
• Full duplex operation with CMOS/TTL compatible logic thresholds
• Single +5V supply operation capability

Applications

• Battery-powered equipment requiring low power consumption
• Hand-held diagnostic tools
• Portable communications interfaces

Procurement Notes

Verify the specific suffix 'EWE' corresponds to the Wide SOIC package and extended temperature grade (-40°C to +85°C) required for the application. Confirm that the '+T' designation indicates tape and reel packaging if automated assembly is utilized. Ensure compatibility with existing PCB footprints designed for 16-pin wide SOIC components.

Selection Notes

Select this component when high ESD immunity is critical for RS-232 ports exposed to frequent connection or harsh environments. It serves as a direct replacement for standard MAX232 variants lacking ESD protection. Verify that the system design accommodates the required four external capacitors (typically 1μF) for the charge pump circuitry.

Part Context

This part belongs to the MAX202E-MAX213E family of RS-232 transceivers. The 'E' suffix denotes enhanced ESD protection capabilities compared to non-E versions. The 'W' indicates the wide SOIC package option, while 'E' specifies the industrial temperature range. This family shares pinouts and functional characteristics across multiple driver/receiver configurations.

Replacement Considerations

Public confirmed substitute part numbers include MAX232EEWI+T and MAX232EEPE+T, which offer identical electrical specifications but differ in package type (narrow SOIC and DIP respectively). Non-E versions like MAX232CWE+T lack the ±15kV ESD protection feature.