MAX1480ACPI

Drivers, Receivers, Transceivers Overview

The MAX1480ACPI is a complete, electrically isolated RS-485/RS-422 data-communications interface solution housed in a 28-pin wide plastic DIP package. It integrates transceivers, optocouplers, and a transformer to provide isolation between the logic side and the signal path. The device operates on a single +5V supply and supports half-duplex communication with a maximum data rate of 2.5Mbps. It features short-circuit current limiting and thermal shutdown protection for the driver outputs. The receiver includes a fail-safe feature that guarantees a known output state if the input is open circuit.

Drivers, Receivers, Transceivers Feature Summary

• Provides complete electrical isolation using integrated optocouplers and a transformer within a standard DIP package.
• Supports high-speed transmission up to 2.5Mbps with an unrestricted driver slew rate.
• Includes thermal shutdown circuitry that places driver outputs into a high-impedance state during excessive power dissipation.
• Features a fail-safe receiver input that ensures a defined logic level when the differential input lines are disconnected.

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 specific suffix 'CPI' indicates the commercial temperature range (0°C to +70°C) and the 28-pin PDIP package configuration. Confirm that the component is sourced from Analog Devices or Maxim Integrated to ensure authenticity. Check for RoHS compliance status as indicated in official documentation before finalizing procurement orders.

Drivers, Receivers, Transceivers Selection Notes

Select the MAX1480ACPI when a half-duplex isolated interface with high data rates up to 2.5Mbps is required. This model is appropriate for applications where the unrestricted slew rate does not cause excessive electromagnetic interference. Compare against MAX1480B or MAX1480C if reduced-slew-rate drivers are needed to minimize reflections at lower speeds like 250kbps.

Drivers, Receivers, Transceivers Part Context

The MAX1480A belongs to the MAX1480/MAX1490 family of isolated interfaces. While the MAX1480 variants support half-duplex communication, the MAX1490 counterparts provide full-duplex operation. Both families utilize similar hybrid microcircuit technology but differ in their duplexing capabilities and pin configurations, with the MAX1490 series utilizing a 24-pin DIP package.

Drivers, Receivers, Transceivers Replacement Considerations

The MAX1480AEPI serves as the industrial temperature grade (-40°C to +85°C) equivalent of the MAX1480ACPI. For full-duplex requirements, the MAX1490A offers comparable isolation and speed characteristics within a 24-pin package. Ensure any replacement maintains the same isolation voltage ratings and package dimensions for direct board compatibility.

Drivers, Receivers, Transceivers FAQ

How does the MAX1480ACPI handle an open receiver input?

The receiver input features a fail-safe mechanism that guarantees a known output state (RO low) if the input is left open circuit.

What is the maximum data rate supported by the MAX1480ACPI?

The MAX1480ACPI supports transmission rates up to 2.5Mbps due to its unrestricted driver slew rate.

Does the MAX1480ACPI support full-duplex communication?

No, the MAX1480A/B/C models are designed specifically for half-duplex communication.