MAX3082ECSA+

Overview

The MAX3082ECSA+ is a half-duplex RS-485/RS-422 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It operates on a single +5V supply and supports data rates up to 115kbps with slew-rate-limited drivers to minimize EMI. The device features ±15kV ESD protection on all I/O pins, fail-safe circuitry ensuring a logic-high receiver output when inputs are open or shorted, and low-power shutdown mode drawing 1nA. It utilizes an 8-pin SOIC package and functions within a temperature range of -40°C to +85°C.

Feature Summary

• Fail-safe receiver guarantees a logic-high output when inputs are open or shorted
• Slew-rate limiting minimizes electromagnetic interference and reflections
• Enhanced ±15kV electrostatic discharge protection on all communication pins

Applications

• RS-422/RS-485 communications
• Level translators
• Transceivers for EMI-sensitive applications
• Industrial-control local area networks

Procurement Notes

Verify the specific suffix 'C' indicates the commercial temperature range (0°C to +70°C) rather than the industrial range (-40°C to +85°C), as datasheet tables list 'MAX308_EC_' for commercial and 'MAX308_EE_' for industrial ranges. Confirm the 'SA' suffix corresponds to the SOIC-8 package type. Cross-reference the manufacturer's official ordering information to ensure compatibility with system thermal requirements before procurement.

Selection Notes

Select this component for half-duplex RS-485/RS-422 applications requiring error-free transmission up to 115kbps. The integrated slew-rate limiting makes it suitable for environments sensitive to electromagnetic interference. Ensure the design accommodates the single +5V supply requirement and utilizes the fail-safe feature for robust bus monitoring during idle states.

Part Context

The MAX3082E belongs to the MAX3080E–MAX3089E family of high-speed transceivers. Unlike full-duplex variants in the series, the MAX3082E is specifically designed for half-duplex communication. It shares pinout compatibility with industry-standard parts like the 75180 but includes enhanced ESD protection and fail-safe capabilities not present in older generations.

Replacement Considerations

Pin-compatible replacements include other members of the MAX3080E–MAX3089E family such as the MAX3080E or MAX3081E, provided the application can accommodate full-duplex operation or unused pins are managed appropriately.