MAX483EESA+

Overview

The MAX483EESA+ is a low-power, half-duplex RS-485 and RS-422 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It features one driver and one receiver housed in an 8-SOIC surface-mount package. The device operates from a single +5V supply (4.75V to 5.25V) with a maximum data rate of 250kbps. Key electrical characteristics include ±15kV ESD protection on all pins, a receiver input hysteresis of 70mV, and a typical no-load supply current of 120µA. It supports an operating temperature range of -40°C to +85°C.

Feature Summary

• Slew-rate-limited drivers minimize electromagnetic interference (EMI) and reduce signal reflections caused by improperly terminated cables.
• Integrated ±15kV electrostatic discharge (ESD) protection on driver outputs and receiver inputs prevents latchup without external components.
• Low-power shutdown mode reduces supply current to 0.5µA when both driver and receiver are disabled.
• Fail-safe receiver guarantees a logic-high output if the differential input is open-circuited.

Applications

• Industrial-control local area networks
• Transceivers for EMI-sensitive applications
• Level translators

Procurement Notes

Verify the ordering suffix 'ESA+' indicates the SOIC-8 package and extended temperature range (-40°C to +85°C). Confirm RoHS compliance status as specified in the manufacturer's documentation. Ensure the component source matches the official Analog Devices or Maxim Integrated distribution channels to guarantee authenticity and traceability.

Selection Notes

Select this component for half-duplex RS-485/RS-422 communication requiring reduced EMI due to its slew-rate limitation. It is suitable for harsh environments needing robust ESD protection. Compare against MAX481E or MAX485E if higher data rates up to 2.5Mbps are required, as those variants lack slew-rate limiting.

Part Context

This part belongs to the MAX481E/MAX483E/MAX485E/MAX487E–MAX491E family of low-power transceivers. The MAX483E specifically distinguishes itself within the family by featuring slew-rate-limited drivers optimized for minimizing EMI, unlike the MAX481E or MAX485E which support higher speeds but generate more high-frequency harmonics.

Replacement Considerations

Public confirmed substitutes include MAX483EEPA+ (Plastic DIP package) and MAX483ECSA+ (SOIC package, commercial temp). Verify pin compatibility and thermal performance when substituting between package types.

FAQ

How does the MAX483E handle improper cable termination?

The MAX483E features slew-rate-limited drivers that significantly reduce reflections caused by improperly terminated cables, allowing for error-free data transmission.

What is the power consumption in shutdown mode?

When both the driver enable (DE) is low and receiver enable (RE) is high, the device enters a low-power shutdown mode consuming typically 0.5µA of supply current.

Does the MAX483E support full-duplex communication?

No, the MAX483E is designed for half-duplex applications. Full-duplex variants in this family include the MAX488E through MAX491E.