Isolation

Isolate digital signals with our digital isolators

Highest working voltage, lowest emissions, lowest power and highest efficiency with integrated-power

Explore our portfolio of basic and reinforced digital isolators based on a proprietary silicon dioxide (SiO2) insulation barrier for industry-leading performance. We offer high-voltage, high-speed, low-power, small-size, integrated-power and low-cost solutions for every application including industrial and automotive.

Digital isolators

Digital isolators featuring the industry's highest isolation rating up to 5.7 kVrms, operational voltage from 2.25 to 5.5 V, power down to 4.2 µA per channel and speeds up to 150 Mbps

Digital isolators with integrated power

Digital isolators with integrated power featuring isolation ratings of 5 kVrms, up to 0.65-W output power, high efficiency and the lowest electromagnetic emissions

Isolated digital input receivers

Simple, isolated digital input receivers that improve on traditional optocoupler designs for high-density I/O modules

Featured digital isolators

ISO77xx family of digital isolators

The ISO77xx family of digital isolators provides high-performance signal isolation separated by a capacitive SiO2 insulation barrier. Through innovative chip design and layout techniques, electromagnetic compatibility of the ISO77xx family is optimized for system-level ESD, EFT, surge and emissions compliance. This family of devices features:

  • 5-kVrms wide creepage and 3-kVrms narrow creepage package options for both high voltage and compact designs.
  • Single, dual, triple, quad and six channel options for all application configurations, including the industry’s smallest six channel 3-kVrms digital isolator.
  • Up to 1000-V working voltage and 100-kV/µs typical common-mode transient immunity enabling use in high voltage, noisy environments such as grid and motor drive applications.
Chipshot image of the wide-body 16-pin SOIC (DW) package
Chipshot image of the 16-pin SSOP (DBQ) package

ISO70xx family of ultra-low power digital isolators

The ISO70xx family of digital isolators provides ultra-low power isolation with our robust capacitive SiO2 insulation barrier. The low-power feature of the ISO70xx enables these high-performance, high-reliability digital isolators to be used in applications with high power and thermal constraints such as field transmitters and programmable logic controllers (PLCs). This family of devices: 

  • Offers ultra-low power operation with current consumption as low as 4.2 µA per channel, total current consumption less than 20 µA at 10 kbps, and power that is scalable up to 2 Mbps.
  • Provides reliable isolation barrier strength supporting 3-kVrms isolation voltage, 100-kV/µs typical common-mode transient immunity and greater than 100-year projected lifetime.
  • Enables robust isolation in intrinsically safe (IS) designs and IS-to-IS hazardous environments.

ISO121x family of isolated digital input receivers

The ISO121x devices are isolated 24-V to 60-V digital input receivers that improve on traditional optocoupler designs for high-density I/O modules.

  • Integrated current limiting circuitry, programmable input voltage thresholds, and no field-side power enable compact board layout.
  • Interfaces with 9-V to 300-V DC and AC digital input modules in PLCs, motor-control, grid infrastructure, and other industrial applications. 
  • Compliant to IEC 61131-2 Type 1, 2, and 3  characteristics for simple and compact PLC digital input designs.
Chipshot image of the 16-pin SSOP (DBQ) package

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Digital isolators technical articles