ISO6521FREUR

Overview

The ISO6521FREUR is a dual-channel digital isolator from Texas Instruments, utilizing capacitive coupling for functional isolation. It operates within a supply voltage range of 1.71 V to 5.5 V and supports data rates up to 50 Mb/s. The device features an insulation voltage of 570 Vrms and is housed in an 8-pin VSON package. Key electrical parameters include a propagation delay of 18 ns, rise/fall times of 4.5 ns, and pulse width distortion values ranging from 0.2 ns to 0.7 ns. It functions unidirectionally with one forward and one reverse channel, operating across a temperature range of -40°C to +125°C.

Feature Summary

• Provides functional isolation between circuits using capacitive coupling technology
• Supports high-speed data transmission at rates up to 50 Mb/s
• Operates with low power consumption suitable for battery-powered applications

Applications

• Industrial automation systems requiring galvanic isolation
• Medical equipment needing functional safety isolation
• Power metering and energy management interfaces

Procurement Notes

Verify the specific suffix FREUR corresponds to the VSON-8 package and tape-and-reel orientation required for your assembly process. Confirm that the 570 Vrms insulation rating meets the safety standards of your target application. Ensure compatibility with the 1.71 V to 5.5 V supply voltage range during system design validation.

Selection Notes

Select this component when a compact VSON-8 footprint is preferred over SOIC packages. Choose this part for applications requiring unidirectional signal flow with moderate speed requirements. Consider the 570 Vrms insulation level against higher voltage needs found in other ISO6521 variants.

Part Context

This device belongs to the ISO652x family of general-purpose dual-channel functional isolators. It complements other variants like the ISO6521DR which offers different packaging and insulation ratings. The series is designed to replace optocouplers in modern designs while maintaining functional safety compliance.

Replacement Considerations

ISO6521FDR serves as a pin-compatible alternative with SOIC-8 packaging and higher insulation voltage.