IL 611A-1

Overview

The IL 611A-1 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 without an integrated isolated power supply. The device features two channels with unidirectional signal transmission, supporting a data rate of 40Mbps and a minimum Common Mode Transient Immunity (CMTI) of 15kV/µs. It operates within a supply voltage range of 3V to 5.5V and is available in an 8-TSSOP or 8-MSOP package with a width of 3.00mm.

Feature Summary

• Employs GMR sensor technology for robust signal isolation
• Provides high common mode transient immunity for noisy environments
• Supports unidirectional data transmission across two channels

Applications

• General purpose digital isolation in industrial systems
• Signal interfacing between microcontrollers and peripheral devices
• Protection of low-voltage control circuits from high-voltage noise

Procurement Notes

Verify component status as obsolete or discontinued before procurement planning. Confirm availability of qualified substitutes such as the IL 611A-1E variant if current stock is insufficient. Ensure design-in compatibility with the 8-TSSOP or 8-MSOP footprint during the sourcing phase.

Selection Notes

Select this component for applications requiring moderate data rates up to 40Mbps with high noise immunity. The GMR technology offers stability compared to capacitive alternatives. Verify that the required channel count matches the two-channel configuration and that the operating temperature range meets system specifications.

Part Context

This part belongs to the IsoLoop family of digital isolators utilizing magnetic sensing principles. It serves as a legacy alternative to newer high-speed variants like the IL7xx series. The device is designed for cost-sensitive applications where extreme speed is not the primary requirement but reliable isolation is critical.

Replacement Considerations

The IL 611A-1E is documented as a similar substitute part number. Verify pinout and parameter equivalence before substitution.