IL 422-3V

Overview

The IL422-3V is a digital isolator from NVE Corp/Isolation Products designed for RS-422 and RS-485 communication interfaces. It features a 16-SOIC package with a width of 0.295 inches (7.50mm). The device provides 2500Vrms voltage isolation and supports data rates up to 10 Mbps. It operates within a supply voltage range of 3V to 5.5V on the primary side and 4.5V to 5.5V on the secondary side. The component includes three channels, configured as two unidirectional inputs on Side 1 and one unidirectional input on Side 2. It functions reliably in temperatures ranging from -40°C to 100°C.

Feature Summary

• Provides galvanic isolation for high-speed serial communication protocols
• Integrates magnetic sensor technology for reliable signal transmission
• Supports standard RS-422 and RS-485 interface requirements

Applications

• Industrial automation control systems
• Medical equipment signal isolation
• Power electronics gate drive circuits

Procurement Notes

Verify the specific suffix '3V' to confirm the dual-voltage supply configuration (3V-5.5V / 4.5V-5.5V) required by your circuit design. Ensure the 16-SOIC footprint matches your PCB layout constraints. Confirm RoHS compliance status if environmental regulations apply to your manufacturing process. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components.

Selection Notes

Select this component when isolated RS-422 or RS-485 communication is required with moderate channel counts. The 3-channel configuration suits applications needing multiple isolated signal paths without excessive board space. Consider the 2500Vrms isolation rating for noise immunity in electrically noisy environments. Verify that the operating temperature range meets the environmental conditions of the final assembly.

Part Context

This part belongs to NVE's IL series of digital isolators, which utilize proprietary magnetic sensor technology. These devices are engineered to replace traditional optocouplers in many applications, offering higher reliability and lower power consumption. The series is widely used in industrial and automotive sectors where robust signal integrity across isolation barriers is critical.

Replacement Considerations

Check for direct substitutes such as the IL422E variant, noting potential differences in RoHS compatibility or specific electrical tolerances. Ensure any replacement maintains the same 16-SOIC package dimensions and pinout configuration to guarantee mechanical compatibility.