MAX1483CPA+

Drivers, Receivers, Transceivers Overview

The MAX1483CPA+ is a half-duplex RS-485 transceiver manufactured by Analog Devices Inc. (Maxim Integrated). It operates from a single +5V supply and supports data rates up to 250kbps. The device features a low 20µA operating current and a shutdown mode consuming only 0.1µA. It includes slew-rate-limited drivers to minimize EMI and reflections, along with fail-safe receiver inputs that guarantee a logic-high output when the input is open circuit. The component utilizes an 8-pin PDIP package and is rated for operation within a temperature range of 0°C to +70°C.

Drivers, Receivers, Transceivers Feature Summary

• Slew-rate limited drivers reduce electromagnetic interference and signal reflections on improperly terminated cables.
• Low-power architecture provides 20µA operating current and a 0.1µA shutdown mode.
• Fail-safe receiver design ensures a high logic state if the differential input lines are left open.
• Thermal shutdown and short-circuit current limiting protect the driver outputs during fault conditions.

Drivers, Receivers, Transceivers Applications

• Low-power RS-485 communication networks
• EMI-sensitive industrial control applications
• Industrial-control local area networks
• Large multipoint LANs supporting up to 256 nodes

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix 'CPA+' against official manufacturer documentation to confirm the package type, lead finish, and environmental compliance status. Ensure the procurement channel sources components directly from authorized distributors or the manufacturer to prevent counterfeit parts. Confirm that the operational temperature range meets the requirements of the intended deployment environment before finalizing orders.

Drivers, Receivers, Transceivers Selection Notes

Select this component for half-duplex RS-485 systems requiring minimal power consumption and reduced electromagnetic emissions. The 1/8-unit-load input impedance allows for significantly higher node density compared to standard transceivers. Verify that the application does not require full-duplex operation, as the MAX1482 variant serves that function. Ensure the system voltage aligns with the specified single +5V supply requirement.

Drivers, Receivers, Transceivers Part Context

This part belongs to the MAX1482/MAX1483 family of low-power RS-485 transceivers. While the MAX1482 provides full-duplex capability, the MAX1483 is designed specifically for half-duplex applications. Both share identical electrical characteristics regarding current consumption, protection features, and interface standards, differing primarily in their internal duplexing configuration.

Drivers, Receivers, Transceivers Replacement Considerations

The MAX1482 serves as a functional substitute for applications requiring full-duplex communication instead of half-duplex. Other variants within the same series, such as the MAX1483EPA+, offer extended temperature ranges (-40°C to +85°C) suitable for harsher environments.