MAX3235ECWP+TG36

Overview

The MAX3235ECWP+TG36 is a dual RS-232 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It operates on a single 4.5V to 5.5V supply and supports data rates up to 250kbps. The device integrates two drivers and two receivers in a full-duplex configuration within a 20-SOIC package. Key electrical specifications include a receiver hysteresis of 500 mV, propagation delay of 0.15 µs, and an operating current of 1 mA. It features 15 kV ESD protection and includes internal capacitors for charge pump functionality.

Feature Summary

• Integrates dual RS-232 drivers and receivers with internal charge pump capacitors
• Provides 15 kV electrostatic discharge (ESD) protection on all pins
• Includes a shutdown mode for power reduction during idle periods

Applications

• Industrial communication systems requiring RS-232 connectivity
• Portable battery-powered instruments utilizing single-supply operation
• Modems and fax machines interfacing with microcontrollers

Procurement Notes

This component is officially listed as obsolete or end-of-life by the manufacturer. Verification of availability requires checking authorized distributors for remaining stock or alternative packaging options. Buyers must confirm the specific suffix compatibility and ensure that any substitute components meet the original design's electrical and mechanical requirements before procurement.

Selection Notes

Select this part when designing circuits requiring dual RS-232 channels with integrated capacitors to minimize external component count. Ensure the application voltage remains within the 4.5V to 5.5V range. Verify that the 250kbps data rate meets system timing constraints and that the SOIC-20 package fits the PCB layout. Consider the 0°C to 70°C commercial temperature range suitability.

Part Context

The MAX3235 belongs to the Maxim Integrated MAX32xx family of low-power RS-232 transceivers. This series is characterized by its ability to operate from a single 3V to 5.5V supply while generating the required positive and negative voltages for RS-232 standards using internal charge pumps. The ECWP suffix denotes the industrial/commercial temperature grade and the 20-pin SOIC package type.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. As the part is marked obsolete, engineers should consult official replacement guides or contact the manufacturer for recommended upgrades.