MAX3084CSA+

Overview

The MAX3084CSA+ is a full-duplex RS-485/RS-422 transceiver manufactured by Analog Devices Inc. (Maxim Integrated). It operates on a single +5V supply with a voltage range of 4.75V to 5.25V and draws 375µA of quiescent current. The device supports data rates up to 500kbps with slew-rate-limited drivers to minimize EMI. It features fail-safe circuitry that guarantees a logic-high receiver output when inputs are open or shorted. The component is housed in an 8-pin SOIC package and operates within a temperature range of 0°C to +70°C.

Feature Summary

• Fail-safe receiver circuitry ensures a logic-high output state during bus idle conditions, input shorts, or disconnections.
• Slew-rate-limited driver outputs reduce electromagnetic interference and signal reflections on improperly terminated cables.
• 1/8-unit-load receiver input impedance allows for high node density, supporting up to 256 transceivers on a single bus.

Applications

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

Procurement Notes

Verify the specific suffix CSA+ against official manufacturer documentation to confirm the narrow SOIC package and commercial temperature range. Ensure compatibility with system power rails and interface requirements before integration. Cross-reference part numbers with authorized distributors to validate authenticity and traceability.

Selection Notes

Select this component for full-duplex applications requiring moderate speed up to 500kbps. It is suitable where reduced EMI is critical due to its slew-rate limiting. Compare against MAX3080 series variants if higher speeds or half-duplex configurations are required instead.

Part Context

This device belongs to the MAX3080–MAX3089 family of high-speed transceivers designed for RS-485/RS-422 standards. The MAX3084 specifically provides full-duplex operation with 500kbps capability. It shares architectural similarities with other family members but differs in duplex mode and maximum data rate specifications.

Replacement Considerations

The MAX3084EESA+ serves as a verified industrial-grade replacement offering extended temperature support (-40°C to +85°C) while maintaining functional pin compatibility.