MAX3079EASD+T

Overview

The MAX3079EASD+T is a +3.3V, ±15kV ESD-protected, fail-safe, hot-swap RS-485 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It features one driver and one receiver housed in an 8-pin SOIC package. The device supports pin-selectable full or half-duplex operation and offers selectable slew rates for data transmission up to 250kbps, 500kbps, or 16Mbps via the SRL pin. It operates within a supply voltage range of 3.0V to 3.6V and functions across an industrial temperature range of -40°C to +125°C.

Feature Summary

• Pin-selectable full-duplex or half-duplex communication modes
• Programmable slew-rate limiting for flexible data rate selection
• Independent phase control pins for correcting twisted-pair reversals
• Hot-swap capability on enable inputs to prevent bus contention

Applications

• Industrial Control Systems
• Telecommunications Equipment
• Security Systems
• Lighting Systems
• Instrumentation

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and temperature rating. Ensure the component matches the required operational mode configuration before integration. Cross-reference the manufacturer's part number with authorized distributor listings to validate authenticity and traceability.

Selection Notes

Select this component when design requirements demand configurable duplex modes and adjustable transmission speeds within a single package. The integrated phase inversion capabilities simplify wiring corrections for reversed twisted pairs. Verify that the system power supply remains stable within the specified 3.3V tolerance for optimal performance.

Part Context

This device belongs to the MAX3070E–MAX3079E family of high-speed RS-485/RS-422 transceivers. Unlike fixed-function variants in the series, the MAX3079E provides unique flexibility through programmable slew rates and selectable duplex operations. It shares common robust protection features such as thermal shutdown and fail-safe receivers with its siblings.

Replacement Considerations

Direct functional replacements within the same family include the MAX3070E, MAX3073E, and MAX3076E, though these lack the MAX3079E's programmable slew rate and duplex selection features. Substitution requires verifying that the fixed characteristics of alternative parts meet the specific application speed and communication mode requirements.