MAX3084EESA+

Overview

The MAX3084EESA+ is a full-duplex RS-422/RS-485 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It operates on a single +5V supply (4.75V to 5.25V) and supports data rates up to 500kbps with enhanced slew-rate limiting. The device features ±15kV ESD protection on all I/O pins and includes fail-safe circuitry that guarantees a logic-high receiver output when inputs are open or shorted. It incorporates thermal shutdown protection for the driver outputs. The component is housed in an 8-pin SOIC package and functions within a temperature range of -40°C to +85°C.

Feature Summary

• Enhanced slew-rate limiting facilitates error-free data transmission at speeds up to 500kbps while minimizing electromagnetic interference.
• True fail-safe receiver design ensures a logic-high output state during bus idle conditions, input shorts, or open circuits.
• Robust ±15kV electrostatic discharge protection is provided for all RS-485 input and output pins using the Human Body Model standard.

Applications

• RS-422 and RS-485 communication networks
• Industrial control local area networks
• Level translation applications

Procurement Notes

Verify the specific suffix 'EESA+' against official manufacturer documentation to confirm the exact operating temperature range, pin configuration, and RoHS compliance status. Ensure the procurement channel provides valid traceability for the Analog Devices / Maxim Integrated brand. Cross-reference the datasheet revision date to confirm compatibility with current design specifications before finalizing orders.

Selection Notes

Select this component for full-duplex applications requiring reliable performance up to 500kbps. The integrated fail-safe feature is critical for systems where bus idle states must trigger a defined high logic level. Verify that the system power supply remains strictly within the 4.75V to 5.25V range to maintain electrical characteristics. Consider the 8-pin SOIC footprint constraints during PCB layout planning.

Part Context

This part belongs to the MAX3080E–MAX3089E family of high-speed transceivers designed for RS-485 and RS-422 standards. Within this series, the MAX3084E variant specifically targets full-duplex operations with intermediate speed capabilities. It shares common architectural features with siblings like the MAX3080E and MAX3085E but differs in duplex mode and maximum data rate specifications.

Replacement Considerations

The MAX3084E is pin-compatible with industry-standard parts such as the 75180. When evaluating substitutes, verify that the alternative maintains full-duplex operation and matches the 500kbps slew-rate limitation. Confirm that replacement devices offer equivalent ±15kV ESD protection and fail-safe thresholds to ensure system reliability.