Analog Devices Inc. ADuM140D/E 4-Channel Isolators

Analog Devices Inc. ADuM140D/E 4-Channel Isolators are based on iCoupler® technology, which integrates high-speed CMOS and monolithic air core transformer technology. ADuM140D/E isolators provide a maximum propagation delay of 13ns with pulse width distortion less than 3ns and tight channel-to-channel matching at 3ns. The data channels are independent and are available in a variety of configurations with withstand voltage ratings of 3.75kVrms. These isolators operate with the supply voltage on either side ranging from 1.8V to 5V, allowing compatibility with lower voltage systems as well as enabling voltage translation functionality across the isolation barrier. The isolators ensure DC correctness in the absence of input logic transitions. Ideal applications include general-purpose multi-channel isolation, serial peripheral interface (SPI)/data converter isolation, and industrial field bus isolation.


  • High common-mode transient immunity: 100kV/μs
  • High robustness to radiated and conducted noise
  • Low propagation delay: 13ns maximum for 5V operation
  • 150Mbps minimum data rate
  • 3.75kVrms withstand voltage rating
  • Low dynamic power consumption
  • 1.8V to 5V level translation
  • High-temperature operation: 125°C
  • Fail-safe high or low options
  • 16-lead, RoHS-compliant, SOIC package
  • Backward compatibilityADuM140E1 pin-compatible with ADuM1400


  • General-purpose multichannel isolation
  • SPI interface/data converter isolation
  • Industrial field bus isolation
Published: 2015-09-30 | Updated: 2023-05-11