MAX231EWE

Overview

The MAX231EWE+ is a dual-channel RS-232 transceiver from the MAX220–MAX249 family, manufactured by Analog Devices Inc./Maxim Integrated. It operates on a single +5V supply and utilizes an internal charge pump to generate the required ±10V levels for EIA/TIA-232E communication. The device features two drivers and two receivers with full-duplex capability. It supports data rates up to 120 kbps and includes integrated capacitors, eliminating the need for external components. The component is housed in a 16-pin Wide SOIC package and is rated for an industrial operating temperature range of -40°C to +85°C.

Feature Summary

• Integrated charge pump circuitry eliminates the need for bipolar ±12V supplies
• Built-in capacitors reduce printed circuit board space requirements
• Single +5V supply operation simplifies power design

Applications

• Interface translation between TTL/CMOS logic and RS-232 standards
• Multidrop RS-232 network connections
• Portable diagnostics equipment requiring compact serial interfaces

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to confirm package type and temperature grade. Confirm RoHS compliance status as indicated in the official documentation. Ensure the source document explicitly lists the MAX231EWE+ variant to validate availability and specifications.

Selection Notes

Select this component when board space is critical due to its integrated capacitor design. It is suitable for applications requiring standard RS-232 signaling without external voltage generation. Verify that the required data rate does not exceed 120 kbps and that the system operates within the specified single-supply voltage constraints.

Part Context

This part belongs to the MAX220–MAX249 family of +5V-powered multichannel RS-232 drivers and receivers. The family offers various channel configurations and package options. The MAX231 specifically provides a dual-driver/dual-receiver configuration optimized for standard serial communication tasks.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.