MAX3079EASD+

Overview

The MAX3079EASD+ 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 in a 14-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 an extended temperature range of -40°C to +125°C and draws 800μA supply current when unloaded.

Feature Summary

• Pin-selectable full/half-duplex operation
• Slew-rate-limited drivers for error-free data transmission
• Hot-swap input structure on DE and RE pins
• Phase controls to correct for twisted-pair reversal

Applications

• Lighting Systems
• Industrial Control
• Telecom
• Security Systems
• Instrumentation

Procurement Notes

Verify the specific suffix 'ASD+' against official documentation to confirm the exact package type and temperature grade before procurement. Ensure compatibility with system voltage levels and interface requirements. Cross-reference the manufacturer's latest datasheet for any updates to ordering information or availability status.

Selection Notes

Select this component when flexible duplex mode and variable data rates are required in a single package. The MAX3079E allows design optimization for different bus speeds without changing hardware. Verify that the 1/8-unit load receiver impedance supports the intended number of devices on the bus.

Part Context

This part belongs to the MAX3070E–MAX3079E family of +3.3V RS-485 transceivers. Unlike fixed-speed variants in the series, the MAX3079E provides unique configurability through dedicated control pins for duplex selection and slew rate limiting, offering greater design flexibility for varying communication standards.

Replacement Considerations

Direct functional substitutes within the same family include other MAX307xE variants, though they lack the configurable slew rate and duplex modes. Verify pinout compatibility and electrical specifications before substituting with non-configurable models like the MAX3073E or MAX3076E.