IL 3122E

Overview

The IL3122E is a digital isolator from NVE Corp utilizing IsoLoop technology. It provides 2500Vrms isolation for two channels with a data rate of 5Mbps and 15kV/µs common-mode transient immunity. The device supports RS422 and RS485 communication standards. It operates within a supply voltage range of 3V to 5.5V and features a propagation delay of 85ns maximum at load capacitance. The component is housed in a 16-pin SOIC package, measuring 9.5mm in length and 1.58mm in height. It functions reliably across an operating temperature range of -40°C to 85°C.

Feature Summary

• Utilizes Giant Magnetoresistive (GMR) sensor technology for signal transmission
• Provides galvanic isolation between input and output sides without optical components
• Supports differential input signals for robust noise immunity

Applications

• RS422 communication interface isolation
• RS485 communication interface isolation
• Industrial control system signal isolation

Procurement Notes

Verify the specific suffix designation against official manufacturer documentation to confirm exact electrical characteristics and package dimensions. Ensure compliance with RoHS standards as indicated in current product specifications. Cross-reference the part number with authorized distributors to validate authenticity and sourcing integrity before procurement.

Selection Notes

Select this component when high-speed digital isolation is required for RS422 or RS485 bus applications. Consider the 2500Vrms isolation rating and 15kV/µs CMTI for environments with significant electrical noise. Evaluate the 16-pin SOIC footprint against available board space constraints and thermal management requirements for the target application.

Part Context

The IL3122E belongs to the IsoLoop series of digital isolators manufactured by NVE Corp. This series distinguishes itself by employing magnetic coupling rather than traditional optical or capacitive methods. The component serves as a bridge between low-voltage logic circuits and higher-voltage industrial interfaces, ensuring signal integrity while maintaining electrical safety barriers.

Replacement Considerations

IL3122