MAX1490AEPG+

Drivers, Receivers, Transceivers Overview

The MAX1490AEPG+ 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 24-pin DIP package. Powered by a single +5V supply on the logic side, it supports full-duplex communication with data rates up to 2.5Mbps. The device features short-circuit current-limited drivers protected by thermal shutdown circuitry. Receiver inputs include a fail-safe feature that guarantees a known output state if the input is open circuit. Typical isolation withstand voltage is 1600V RMS for one minute or 2000V RMS for one second.

Drivers, Receivers, Transceivers Feature Summary

• Integrates transceivers, optocouplers, and a transformer for complete electrical isolation in a standard DIP package
• Supports full-duplex communication with transmission rates up to 2.5Mbps
• Drivers are short-circuit current limited and protected against excessive power dissipation via thermal shutdown
• Receiver inputs feature a fail-safe mechanism ensuring a known output state when the input is open circuit

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 component matches the specific MAX1490AEPG+ designation, confirming the 'E' suffix indicates an extended temperature range of -40°C to +85°C and the 'PG+' suffix denotes a 24-pin plastic DIP package. Ensure the source documentation aligns with the provided datasheet specifications regarding isolation ratings and electrical characteristics before finalizing procurement decisions.

Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring full-duplex isolated RS-485 or RS-422 communication at speeds up to 2.5Mbps. It is suitable for environments needing high isolation withstand voltages and fail-safe receiver outputs. Consider the MAX1490B variant if reduced slew-rate drivers are preferred for minimizing EMI at lower data rates up to 250kbps.

Drivers, Receivers, Transceivers Part Context

The MAX1490AEPG+ belongs to the MAX1480A/MAX1480B/MAX1480C/MAX1490A/MAX1490B family of isolated interface solutions. While the MAX1480 variants support half-duplex communication, the MAX1490 series specifically enables full-duplex operation. This family utilizes a hybrid microcircuit design to provide robust signal and power transfer across the isolation barrier using internal transformers and optocouplers.

Drivers, Receivers, Transceivers Replacement Considerations

Public confirmed substitute part numbers: MAX1490ACPG+