MAX1480BCPI+

Drivers, Receivers, Transceivers Overview

The MAX1480BCPI+ is a complete, electrically isolated RS-485/RS-422 data-communications interface solution in a hybrid microcircuit. It integrates transceivers, optocouplers, and a transformer within a standard 28-pin DIP package. The device supports half-duplex communication with reduced-slew-rate drivers to minimize EMI and reflections, enabling error-free transmission at rates up to 250kbps. A single +5V supply on the logic side powers both sides of the interface. The unit typically withstands 1600V RMS (1 minute) or 2000V RMS (1 second). Operating temperature ranges from -40°C to +85°C.

Drivers, Receivers, Transceivers Feature Summary

• Integrated isolation barrier using optocouplers and a transformer for signal and power transfer
• Reduced-slew-rate driver design minimizes electromagnetic interference and cable reflections
• Fail-safe receiver input guarantees a known output state when the input is open circuit
• Driver outputs are short-circuit current limited and protected by thermal shutdown circuitry

Drivers, Receivers, Transceivers Applications

• Isolated RS-485/RS-422 Data Interface Transceivers for EMI-Sensitive Applications
• Industrial-Control Local Area Networks
• Automatic Test Equipment
• HVAC/Building Control Networks

Drivers, Receivers, Transceivers Procurement Notes

Verify the ordering suffix 'CPI' corresponds to the commercial temperature range variant (-40°C to +85°C) in the 28-pin wide plastic DIP package. Confirm that the specific revision matches the manufacturer's latest documentation to ensure compatibility with isolation requirements and pin configurations.

Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring half-duplex communication with strict EMI constraints due to its slew-rate-limited drivers. Ensure the system operates within the specified 4.5V to 5.5V supply voltage range. Verify that the required isolation voltage rating meets the application's safety standards, as the device provides galvanic isolation between the logic and signal sides.

Drivers, Receivers, Transceivers Part Context

This part belongs to the MAX1480A/B/C family of complete isolated RS-485/RS-422 interfaces. Unlike the MAX1480A which supports higher speeds without slew limiting, the MAX1480B variant specifically incorporates reduced-slew-rate drivers optimized for lower data rates up to 250kbps to enhance signal integrity in noisy environments.

Drivers, Receivers, Transceivers Replacement Considerations

MAX1480ACPI+