MAX483CUA+

Overview

The MAX483CUA+ is a low-power, half-duplex RS-485 and RS-422 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It integrates one driver and one receiver within an 8-pin µMAX surface-mount package. The device supports data rates up to 250kbps with slew-rate-limited drivers to minimize electromagnetic interference. It operates from a single 5V supply (4.75V to 5.25V) and features a low-current shutdown mode consuming only 0.1µA. The component includes thermal shutdown protection and fail-safe receiver inputs that guarantee a logic-high output when the input is open.

Feature Summary

• Slew-rate-limited drivers reduce electromagnetic interference and signal reflections on improperly terminated cables.
• Low-power shutdown mode significantly reduces supply current consumption when the device is disabled.
• Fail-safe receiver input guarantees a logic-high output state if the differential bus lines are left open.
• Driver outputs are protected against short circuits and excessive power dissipation via thermal shutdown circuitry.

Applications

• EMI-sensitive industrial control applications
• RS-485 and RS-422 communication networks
• Level translation in low-power systems

Procurement Notes

Verify the specific ordering suffix against official manufacturer documentation to confirm package type and temperature range. Ensure compatibility with system voltage requirements and interface standards before integration. Cross-reference part numbers with authorized distributors to confirm authenticity and availability status.

Selection Notes

Select this component for half-duplex applications requiring reduced EMI at data rates up to 250kbps. It is suitable for designs needing low quiescent current and integrated thermal protection. Verify that the 8-pin µMAX package fits the board layout constraints and that the 5V supply rail matches the system architecture.

Part Context

This device belongs to the MAX48x family of low-power transceivers designed for RS-485 and RS-422 communications. It shares functional similarities with the MAX481 and MAX485 but is distinguished by its slew-rate limitation for improved signal integrity in noisy environments.

Replacement Considerations

The MAX483CSA serves as a pin-compatible alternative in an SOIC-8 package. Other family members like the MAX481 or MAX485 offer similar functionality but lack the slew-rate limiting feature.