MAX3084ESA+T

Overview

The MAX3084ESA+T is a high-speed RS-485/RS-422 transceiver featuring one driver and one receiver. It operates on a single +5V supply (4.75V to 5.25V) with a typical quiescent current of 375µA. The device supports full-duplex communication at data rates up to 500kbps, utilizing slew-rate-limited drivers to minimize EMI. It incorporates fail-safe circuitry that guarantees a logic-high receiver output when inputs are open or shorted. The component provides 1/8-unit-load receiver impedance, supporting up to 256 transceivers on the bus, and includes thermal shutdown protection.

Feature Summary

• Fail-safe circuitry ensures a logic-high receiver output during input open or short conditions
• Slew-rate-limited drivers reduce electromagnetic interference and signal reflections
• 1/8-unit-load receiver input impedance allows for extensive network expansion

Applications

• RS-422 and RS-485 communications
• Industrial-control local area networks
• Level translators in noisy environments

Procurement Notes

Verify the specific suffix 'ESA+T' against official documentation to confirm package type and reel packaging configuration. Ensure the operating temperature range matches the 'E' designation (-40°C to +85°C). Cross-reference the manufacturer part number with authorized distributors to confirm availability and authenticity before procurement.

Selection Notes

Select this component for applications requiring full-duplex RS-485/RS-422 communication at speeds up to 500kbps. It is suitable for systems needing reduced EMI through slew-rate limiting. Verify compatibility with the required +5V supply voltage and ensure the 8-pin SOIC package fits the design constraints. Consider the fail-safe feature if bus fault tolerance is critical.

Part Context

This device belongs to the MAX3080–MAX3089 family of high-speed transceivers designed for RS-485 and RS-422 standards. The family offers various configurations including half-duplex and full-duplex options with different slew-rate limitations. The MAX3084 specifically targets full-duplex applications with moderate speed requirements and enhanced noise immunity features.

Replacement Considerations

The datasheet notes pin-compatibility with industry-standard parts like the 75180. However, specific substitute part numbers are not explicitly listed in the provided text. Verify functional equivalence regarding pinout, electrical characteristics, and package dimensions before substitution.