MAX483CUA

Overview

The MAX483CUA+T is a low-power, half-duplex RS-485/RS-422 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It integrates one driver and one receiver in an 8-pin uMAX package. The device supports data rates up to 250kbps with slew-rate-limited drivers to minimize EMI. It operates from a single 5V supply (4.75V to 5.25V) and draws 120µA of quiescent current. A low-current shutdown mode reduces consumption to 0.1µA. The component features thermal shutdown protection and fail-safe receiver inputs.

Feature Summary

• Slew-rate-limited drivers reduce electromagnetic interference and signal reflections for error-free transmission.
• Low-power shutdown mode significantly decreases supply current when the device is disabled.
• Fail-safe receiver input guarantees a logic-high output if the differential input lines are open-circuited.

Applications

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

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and temperature range. Confirm RoHS compliance status as indicated by the '+' symbol. Ensure the source document matches the manufacturer's part identification before procurement.

Selection Notes

Select this component for half-duplex RS-485 or RS-422 systems requiring reduced EMI. It is suitable for applications needing low power consumption and a compact 8-pin surface-mount package. Verify that the required data rate does not exceed 250kbps.

Part Context

The MAX483 belongs to the MAX481/MAX483/MAX485 family of low-power transceivers. Unlike the MAX485 which lacks slew-rate limiting, the MAX483 includes this feature to improve signal integrity on improperly terminated cables while maintaining low power usage.

Replacement Considerations

Public confirmed substitutes include MAX483EESA+T and MAX483CSA+. Verify pinout compatibility and electrical specifications before substitution.