IL 3485E

Overview

The IL 3485E is a general-purpose digital isolator from the IsoLoop® series, manufactured by NVE Corp/Isolation Products. It utilizes Giant Magnetoresistive (GMR) technology to provide electrical isolation for high-speed data transmission. The device features two channels with unidirectional signal flow, supporting a data rate of 20 Mbps and a minimum Common Mode Transient Immunity (CMTI) of 15 kV/µs. It operates within a supply voltage range of 3V to 5.5V and offers an isolation voltage rating of 2500 Vrms. The component is housed in a 16-SOIC package (0.295 inch width) and is designed for robust performance in noisy industrial environments.

Feature Summary

• Employs GMR technology for reliable signal isolation without optical degradation
• Provides high common-mode transient immunity for noise-resistant communication
• Supports RS-422 and RS-485 interface protocols for serial data transmission
• Features low propagation delay and pulse width distortion for accurate timing

Applications

• Industrial automation control systems requiring galvanic isolation
• RS-485 and RS-425 communication bus networks
• Medical equipment with strict safety isolation requirements
• Power electronics gate drive circuits

Procurement Notes

Verify the specific suffix 'E' against the manufacturer's latest datasheet to confirm pinout compatibility and RoHS status. Confirm that the 16-SOIC package dimensions match your PCB footprint design. Ensure the selected variant meets the required operating temperature range for your specific application environment before finalizing procurement.

Selection Notes

Select this component when designing systems requiring isolation for differential serial communication interfaces like RS-485. It is suitable for applications needing moderate data rates up to 20 Mbps with high noise immunity. Consider the 16-SOIC package size for space-constrained designs. Verify that the 2500 Vrms isolation rating aligns with the safety standards applicable to your target market and equipment classification.

Part Context

The IL 3485E belongs to the IsoLoop® family of digital isolators, which distinguishes itself from traditional capacitive or optical isolators by using magnetic sensing elements. This family is engineered to offer superior reliability over time, as GMR sensors do not suffer from the luminance decay associated with LEDs. The part serves as a bridge between low-voltage logic circuits and higher-voltage or noisy industrial buses.

FAQ

What type of isolation technology does the IL 3485E use?

It uses Giant Magnetoresistive (GMR) technology, which provides isolation through magnetic coupling rather than optical or capacitive methods.

Is the IL 3485E compatible with standard RS-485 transceivers?

Yes, it is designed specifically to interface with RS-422 and RS-485 transceivers, providing the necessary isolation for these differential communication lines.