MAX3084ESA+

Overview

The MAX3084ESA+ is a full-duplex RS-422/RS-485 transceiver manufactured by Analog Devices Inc. (Maxim Integrated). It integrates one driver and one receiver within an 8-pin SO package. The device supports data transmission rates up to 500kbps with slew-rate-limited drivers to minimize electromagnetic interference. It operates on a single +5V supply, drawing a typical quiescent current of 375µA. The component provides fail-safe circuitry that ensures a logic-high receiver output when inputs are open or shorted. It features a 1/8-unit-load receiver input impedance, allowing up to 256 transceivers on the bus.

Feature Summary

• Fail-safe circuitry guarantees a logic-high receiver output when receiver inputs are open or shorted.
• Slew-rate-limited drivers minimize electromagnetic interference and reduce reflections from improperly terminated cables.
• 1/8-unit-load receiver input impedance enables connection of up to 256 transceivers on a single communication line.

Applications

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

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm temperature range and packaging type. Confirm RoHS compliance status through manufacturer datasheets. Ensure compatibility with existing system voltage requirements and interface standards before procurement.

Selection Notes

Select this component for applications requiring full-duplex communication at speeds up to 500kbps. The slew-rate limitation makes it suitable for environments sensitive to electromagnetic interference. Verify that the 5V supply voltage aligns with the target system design constraints.

Part Context

This device belongs to the MAX3080–MAX3089 family of high-speed transceivers designed for RS-485/RS-422 communication. The family includes variants supporting different duplex modes and data rates ranging from 115kbps to 10Mbps. All devices in this series share common features such as fail-safe operation and low-power shutdown capabilities.

Replacement Considerations

The MAX3084E is a pin-compatible alternative within the same product family. Verify functional equivalence regarding data rate limits and electrical characteristics before substitution.