MAX1480BEPI

Drivers, Receivers, Transceivers Overview

The MAX1480BEPI+ 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 isolated RS-485/RS-422 side. The device operates on a single +5V supply and supports half-duplex communication with a maximum data rate of 250kbps due to its reduced-slew-rate driver. It typically withstands 1600V RMS for one minute or 2000V RMS for one second. The operating temperature range extends from -40°C to +85°C.

Drivers, Receivers, Transceivers Feature Summary

• Provides complete electrical isolation using integrated transceivers, optocouplers, and a transformer within a standard DIP package.
• Features reduced-slew-rate drivers designed to minimize electromagnetic interference (EMI) and reduce signal reflections on improperly terminated cables.
• Includes thermal shutdown circuitry that places driver outputs into a high-impedance state to protect against excessive power dissipation.
• Incorporates a fail-safe receiver input that guarantees a known output state if the differential input lines are left open.

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 'EPI' corresponds to the -40°C to +85°C industrial temperature grade and the 28-pin wide plastic DIP package configuration. Confirm RoHS compliance status through official manufacturer documentation before integration. Ensure the ordering part number matches the exact isolation barrier requirements and duplex mode needed for the target system design.

Drivers, Receivers, Transceivers Selection Notes

Select the MAX1480BEPI+ when reduced-slew-rate drivers are required to mitigate EMI and reflections in noisy environments. This model is suitable for half-duplex applications requiring up to 250kbps transmission rates. Compare against the MAX1480AEPI+ if higher data rates up to 2.5Mbps are necessary, noting that the 'A' variant lacks slew-rate limiting. Ensure the application benefits from the integrated isolation barrier rather than discrete components.

Drivers, Receivers, Transceivers Part Context

The MAX1480B belongs to the MAX1480A/B/C family of isolated RS-485/RS-422 interfaces. These devices replace traditional discrete solutions by combining isolation barriers and transceivers in a single hybrid microcircuit. The 'B' designation specifically indicates the inclusion of reduced-slew-rate drivers optimized for lower-speed, noise-sensitive communications compared to the unrestricted 'A' variant.

Drivers, Receivers, Transceivers Replacement Considerations

MAX1480AEPI+