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 that minimize EMI and reflections, enabling error-free data 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 0°C to +70°C.

Drivers, Receivers, Transceivers Feature Summary

• Integrated isolation barrier using internal optocouplers and a transformer for signal and power transfer
• Reduced-slew-rate driver design to minimize electromagnetic interference and cable reflections
• Short-circuit current limiting and thermal shutdown protection for driver outputs
• Fail-safe receiver input ensuring a known output state when the input is open circuit

Drivers, Receivers, Transceivers Applications

• Isolated RS-485/RS-422 data interfaces
• Transceivers for EMI-sensitive applications
• Industrial-control local area networks
• Automatic test equipment
• HVAC and building control networks

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix 'CPI' corresponds to the commercial temperature range (0°C to +70°C) and wide plastic DIP packaging. Confirm RoHS compliance status as indicated by the '+' designation. Ensure the ordering documentation matches the manufacturer's latest part numbering system to avoid confusion with similar variants like the MAX1480AEPI.

Drivers, Receivers, Transceivers Selection Notes

Select this component for half-duplex isolated RS-485/RS-422 applications requiring low EMI. The MAX1480B variant specifically features reduced-slew-rate drivers suitable for data rates up to 250kbps. Compare against the MAX1480A if higher speeds up to 2.5Mbps are needed without slew-rate limiting. Ensure the application environment falls within the specified 0°C to +70°C operating temperature range.

Drivers, Receivers, Transceivers Part Context

The MAX1480BCPI belongs to the MAX1480 family of complete isolated interface solutions. It shares the same core architecture as the MAX1480A and MAX1480C but differs in driver slew rate characteristics and enable times. The 'B' designation indicates the inclusion of reduced-slew-rate drivers optimized for minimizing EMI at lower data rates compared to the unrestricted 'A' variant.

Drivers, Receivers, Transceivers Replacement Considerations

Public confirmed substitute part numbers include MAX1480ACPI and MAX1480CEPI. These parts share the same package and isolation architecture but differ in maximum data rate capabilities and driver enable times.