MAX232EEWE+

Overview

The MAX232EEWE+ is a dual driver/receiver RS-232 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It operates on a single +5V supply, utilizing an integrated charge pump to generate the required ±10V levels without external bipolar supplies. The device supports full-duplex communication with two drivers and two receivers, achieving data rates up to 120kbps under standard loading conditions. It features high electrostatic discharge protection rated at ±15kV via the Human Body Model. The component is housed in a 16-pin Wide SOIC package and is designed for operation within an extended temperature range of -40°C to +85°C.

Feature Summary

• Integrated charge pump circuitry enables single +5V supply operation, eliminating the need for external bipolar voltage sources.
• Provides robust ±15kV ESD protection on RS-232 inputs and outputs, ensuring reliability in harsh environments.
• Includes internal receiver hysteresis to ensure clean output transitions despite slow signal rise/fall times or noise.
• Meets all EIA/TIA-232E and CCITT V.28 specifications for data transmission.

Applications

• Battery-powered equipment requiring low power consumption
• Hand-held diagnostic tools
• Portable instrumentation systems

Procurement Notes

Verify the specific suffix 'G1Z' against official manufacturer documentation, as local distributor listings may not explicitly detail its functional impact. Confirm that the ordering information aligns with the 16-pin Wide SOIC package variant. Ensure compliance with RoHS directives as indicated in the product attributes. Cross-reference the datasheet revision to confirm the electrical characteristics match the procured batch.

Selection Notes

Select this component when designing systems that require RS-232 communication powered solely by a +5V rail. The wide operating temperature range makes it suitable for industrial applications where ambient temperatures fluctuate significantly. Consider the 120kbps data rate limit when determining suitability for high-speed serial interfaces. Verify that the external capacitor requirements for the charge pump fit within the board space constraints.

Part Context

This part belongs to the MAX232E family of RS-232 transceivers, which are enhanced versions providing superior ESD protection compared to standard models. The 'E' designation indicates the ruggedized version capable of withstanding high static discharge events. It serves as a bridge between TTL/CMOS logic levels and RS-232 signaling standards, facilitating communication between microcontrollers and legacy serial ports.

Replacement Considerations

The MAX232EESE+ is a verified substitute offering identical electrical performance in a narrow SOIC package. Designers must account for the pinout compatibility and physical footprint differences when transitioning from the Wide SOIC to the Narrow SOIC variant.