IL 611A-3E

Overview

The IL 611A-3E is a general-purpose digital isolator from the IsoLoop series, manufactured by NVE Corp/Isolation Products. It features two channels with unidirectional signal transmission in an 8-SOIC package. The device operates on a supply voltage of 3V to 5.5V and supports data rates up to 10Mbps. Key electrical specifications include a 2500Vrms isolation voltage, a minimum common-mode transient immunity (CMTI) of 15kV/µs, and maximum propagation delays of 75ns for low-to-high and 25ns for high-to-low transitions. Typical rise and fall times are 10µs. It functions within a temperature range of -40°C to 85°C.

Feature Summary

• Utilizes Giant Magnetoresistive (GMR) technology for internal signal DC processing and minimal electromagnetic interference noise generation.
• Provides galvanic isolation between input and output sides without requiring an isolated power supply.
• Offers high common-mode transient immunity to maintain signal integrity in noisy environments.

Applications

• Industrial communication systems requiring galvanic isolation
• Data acquisition systems with mixed-signal ground separation
• Power electronics control circuits

Procurement Notes

Verify the specific suffix 'A' and '-3E' against the manufacturer's current datasheet to ensure compatibility with required pinout and electrical tolerances. Confirm that the 8-SOIC package dimensions match the target PCB footprint. Check RoHS compliance status if environmental regulations apply to the final assembly. Ensure the selected component meets the required operating temperature range for the intended application environment.

Selection Notes

Select this component when a robust, magnetoresistive-based isolator is needed for general-purpose digital signal transmission. The IL 611A-3E is suitable for applications demanding high CMTI and moderate data rates. Consider the 8-SOIC package size for space-constrained designs. Verify that the 3V to 5.5V supply range aligns with the system's logic levels. Compare performance metrics against optical isolators if long-term reliability or speed is a primary concern.

Part Context

The IL 611A-3E belongs to the IsoLoop family of digital isolators from NVE Corporation. This series leverages proprietary GMR sensor technology, distinguishing it from capacitive or optical isolation alternatives. The part is designed for general-purpose use, offering a balance of isolation voltage, speed, and package density. It is often used in conjunction with other components in the IL600 series for comprehensive system isolation solutions.

Replacement Considerations

The HCPL-0930 is listed as a similar substitute part number. Verify functional equivalence regarding channel count, isolation voltage, and data rate before replacement. Ensure pin compatibility and thermal characteristics match the original design requirements.