IL4685E

Overview

The IL4685E is a high-speed, fully-isolated RS-422/RS-485 transceiver manufactured by NVE Corporation. It integrates a DC-to-DC converter to provide isolated power for the receiver side, eliminating the need for external isolated supplies. The device features a single channel configuration housed in a 16-pin SOIC package. It supports data rates up to 10 Mbps and operates with a supply voltage range of 3.0 V to 3.6 V on both sides. The isolation rating is typically 5 kVrms, ensuring robust noise immunity in electrically noisy environments.

Feature Summary

• Integrates an isolated DC-DC converter to power the receiver side without external components
• Provides full galvanic isolation between input and output circuits
• Supports high-speed differential bus communication protocols
• Designed for reliable operation in electrically noisy industrial environments

Applications

• Industrial automation control systems
• Factory floor sensor networks
• Medical equipment signal isolation
• Data acquisition systems requiring galvanic separation

Procurement Notes

Verify the specific ordering suffix matches the required package type and temperature range. Confirm that the integrated DC-DC converter requirements align with your system's power budget. Ensure compatibility with the target bus protocol specifications before finalizing procurement orders.

Selection Notes

Select this component when a single-channel isolated RS-422 or RS-485 interface is required with integrated power isolation. Consider the 10 Mbps data rate limit and the 16-SOIC package constraints. Evaluate the need for integrated DC-DC conversion versus external isolated supplies based on board space and complexity.

Part Context

The IL4685E belongs to NVE's IL4xxx series of high-speed isolated transceivers. This family includes variants with different channel counts and integration levels. The series is designed to simplify the design of isolated communication interfaces by combining signal transmission and power isolation in a single compact package.

Replacement Considerations

Check for direct pin-compatible alternatives within the IL4xxx series. Verify if other NVE models offer similar isolation ratings and data rates. Ensure any substitute maintains the integrated DC-DC converter functionality if external isolated power is not available.