IL 3485-3E

Overview

The IL3485-3E is a galvanically isolated, differential bus transceiver designed for bidirectional data communication over balanced transmission lines. It provides high-speed passive input RS-485 isolation with a 2500Vrms voltage rating and supports data rates up to 20Mbps. The device features a common-mode transient immunity of 15kV/µs and operates within a temperature range of -40°C to 85°C. Packaged in a 16-SOIC (0.154", 3.90mm width) surface-mount format, it integrates isolation technology to protect sensitive electronics from ground loops and high-voltage transients in industrial environments.

Feature Summary

• Galvanic isolation for bidirectional data communication over balanced transmission lines
• High-speed passive input design compatible with RS-485 standards
• Robust common-mode transient immunity for noisy industrial environments

Applications

• Industrial automation control systems
• RS-485 network communication interfaces
• Factory floor sensor integration

Procurement Notes

Verify the exact suffix '3E' against manufacturer documentation to confirm package dimensions and thermal specifications. Ensure compatibility with existing RS-485 transceiver footprints. Confirm operating temperature range requirements match the -40°C to 85°C specification. Validate isolation voltage ratings against system safety standards before integration.

Selection Notes

Select this component when galvanic isolation is required for RS-485 buses in electrically noisy environments. It is suitable for applications needing protection against ground potential differences and high-voltage transients. Consider the 16-SOIC package size for PCB layout constraints. Evaluate the 20Mbps data rate against application bandwidth needs.

Part Context

The IL3485-3E belongs to NVE's family of isolated transceivers, specifically engineered for robust communication in harsh industrial settings. It complements other isolated interface solutions by providing integrated isolation barriers without requiring external magnetic components. This series addresses the need for reliable data transfer in systems subject to significant electrical interference or voltage spikes.

Replacement Considerations

Cross-reference with other NVE isolated RS-485 transceivers for pin-compatible alternatives. Verify that substitute devices meet the same 2500Vrms isolation and 20Mbps speed requirements. Check for equivalent package styles and thermal performance characteristics.