MAX238EWG

Overview

The MAX238EWG is a +5V-powered, multichannel RS-232 transceiver from the MAX220–MAX249 family. It integrates four drivers and four receivers for full-duplex communication on a single chip. The device operates within a supply voltage range of 4.5V to 5.5V and supports data rates up to 120kbps. It features a propagation delay of 10us and an operating temperature range of -40°C to +85°C. Packaged in a 24-SOIC (0.295", 7.50mm wide) surface-mount housing, it eliminates the need for external ±12V supplies.

Feature Summary

• Integrates four independent line drivers and four receivers for complete RS-232 interface functionality
• Operates directly from a single +5V power supply without requiring external charge pumps or negative voltages
• Provides full duplex data transmission with standard EIA/TIA-232E signal levels

Applications

• Industrial equipment requiring serial communication interfaces
• Data acquisition systems utilizing RS-232 protocols
• Embedded control units needing compact serial connectivity

Procurement Notes

Verify the specific suffix 'EWG' against the manufacturer's current datasheet to confirm the extended industrial temperature range (-40°C to +85°C) and SOIC package dimensions. Ensure compatibility with system voltage requirements of 4.5V to 5.5V before integration. Cross-reference the component status with official Analog Devices channels as availability may vary by region.

Selection Notes

Select this component when designing systems that require four-channel RS-232 connectivity powered solely by a +5V rail. It is suitable for applications demanding moderate data speeds up to 120kbps. Consider the 24-pin SOIC footprint for PCB layout constraints. Verify that the 10us propagation delay meets the timing requirements of the target serial protocol implementation.

Part Context

This part belongs to the MAX220–MAX249 series of +5V-powered multichannel RS-232 drivers and receivers. These components are designed to replace traditional dual-supply solutions by generating internal charge pump voltages from a single +5V source. The series offers various channel configurations to suit different interface density requirements.

Replacement Considerations

Consult the official MAX220–MAX249 family datasheet for direct pin-compatible alternatives such as the MAX238CNG+ or other variants within the same series that match the required channel count and package type.