MAX238CWG-T

Overview

The MAX238CWG-T is a multichannel RS-232 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It operates from a single +5V power supply and integrates charge pump circuitry to generate the necessary voltages for RS-232 communication without requiring external capacitors. The device features three drivers and five receivers, supporting full-duplex data transmission at rates up to 120 kb/s. It is housed in a 24-pin SOIC package with a wide operating temperature range of 0°C to +70°C.

Feature Summary

• Integrated charge pump eliminates the need for external capacitors
• Supports full-duplex communication with mixed driver and receiver counts
• Operates on a single +5V power supply

Applications

• Industrial control systems requiring serial communication
• Point-of-sale (POS) terminals
• GPS navigation devices
• Medical equipment interfaces
• General-purpose RS-232 data links

Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging when sourcing. Confirm RoHS compliance status through official manufacturer documentation or authorized distributor certificates. Ensure the component matches the exact part number to avoid compatibility issues with existing PCB layouts and design specifications.

Selection Notes

Select this component for applications requiring multiple receive lines alongside fewer transmit lines within a compact footprint. Compare against similar Maxim integrated circuits if external capacitor space is constrained. Verify that the required data rate does not exceed 120 kb/s and that the operating environment remains within the specified commercial temperature limits.

Part Context

This part belongs to the MAX238 series of multichannel RS-232 drivers and receivers designed for EIA/TIA-232E and V.28/V.24 standards. It is part of a broader family of interface ICs from Analog Devices/Maxim Integrated, which includes variants like the MAX239 and MAX206 offering different channel configurations and feature sets for various serial communication needs.

Replacement Considerations

The MAX239CWG+T serves as a functional substitute within the same product family, offering similar RS-232 capabilities. Both components share comparable interface standards and voltage requirements, allowing for potential direct replacements in designs where channel count differences are acceptable.