MAX232MWE/PR+

Overview

The MAX232MWE/PR+ is a +5V-powered, multichannel RS-232 driver and receiver integrated circuit manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range of 4.5V to 5.5V and supports data rates up to 120kb/s. The device features two drivers and two receivers, providing full-duplex communication capabilities. It utilizes an internal charge pump to generate the required ±10V levels from a single +5V supply, eliminating the need for external bipolar power sources. The component is housed in a 16-pin Wide SOIC package and is designed for industrial temperature ranges.

Feature Summary

• Integrates dual charge-pump DC-DC voltage converters to generate ±10V from a single +5V supply
• Provides two independent RS-232 drivers and two independent RS-232 receivers
• Supports full-duplex communication with TTL/CMOS compatible inputs and outputs

Applications

• EIA/TIA-232E and V.28/V.24 communications interfaces
• Multidrop RS-232 networks
• Portable diagnostics equipment

Procurement Notes

Verify the specific suffix 'PR+' against official manufacturer documentation to confirm lead-free status and RoHS compliance. Confirm that the Wide SOIC package dimensions match the design requirements. Ensure the ordering information table in the datasheet explicitly lists this exact part number variant before finalizing procurement.

Selection Notes

Select this component when designing systems requiring standard RS-232 signaling without access to ±12V supplies. The integrated charge pump reduces external component count compared to older discrete solutions. Verify that the 120kb/s data rate meets the application's throughput requirements and that the 16-pin Wide SOIC footprint fits the PCB layout constraints.

Part Context

This device belongs to the MAX220–MAX249 family of line drivers and receivers. The MAX232 variant specifically provides two channels, distinguishing it from single-channel or multi-channel counterparts within the same series. It serves as a bridge between microcontroller logic levels and standard serial port voltages.

Replacement Considerations

Consider the MAX232CWE+ or MAX232EEWE+T for alternative temperature grades or packaging formats within the same family. Verify pin compatibility and electrical specifications before substituting.