IL 261

Overview

The IL 261 is a general-purpose digital isolator from NVE Corp/Isolation Products, utilizing IsoLoop® technology based on Giant Magnetoresistance (GMR) sensing. It features five isolated channels with a 2500Vrms isolation voltage and supports data rates up to 110Mbps. The device offers a common-mode transient immunity of 30kV/µs, with maximum propagation delays of 15ns for both rising and falling edges. It operates within a supply voltage range of 3V to 5.5V and functions across an industrial temperature range of -40°C to 85°C.

Feature Summary

• Utilizes patented IsoLoop® GMR technology for signal isolation without capacitive coupling
• Provides five independent bidirectional or unidirectional channel configurations
• Delivers high-speed performance with 110Mbps data rate capability
• Ensures robust noise immunity with 30kV/µs common-mode transient rejection

Applications

• Industrial automation control systems requiring multi-channel isolation
• Medical equipment signal transmission interfaces
• Power electronics gate drive circuits
• Data acquisition systems in noisy environments

Procurement Notes

Verify the specific suffix code (e.g., VE, 1E, 3E) to confirm package type and insulation rating. Confirm RoHS compliance status and moisture sensitivity level requirements against project specifications. Ensure the selected variant matches the required operating temperature range and channel directionality before ordering.

Selection Notes

Select this component when high-speed multi-channel isolation is needed without integrated power supplies. Compare channel count and package dimensions against PCB layout constraints. Evaluate CMTI requirements against system noise levels. Consider thermal management needs for surface-mount variants in enclosed enclosures.

Part Context

The IL 261 belongs to the IsoLoop® family of magnetic digital isolators. Unlike capacitive or optical isolators, it uses magnetic coupling through thin-film transformers. This series includes variants like IL 260 and IL 262, differing primarily in channel counts and packaging options such as SOIC and SSOP.

Replacement Considerations

Direct pin-compatible replacements may include other five-channel digital isolators from manufacturers like Texas Instruments or Analog Devices. Verify that substitute components match the 2500Vrms isolation rating and 110Mbps speed requirement. Check for equivalent CMTI performance to ensure signal integrity in high-noise applications.