Back to Diodes Incorporated

Diodes Incorporated API774x Digital Isolators

Diodes Incorporated API774x Digital Isolators are 4-channel digital isolators designed to provide robust signal isolation with data rates up to 100Mbps. These isolators feature configurable channel directions, selectable default output states, and a low propagation delay of typically 11ns for high-speed communication. The API774x isolators provide 3000VRMS isolation in an SSOP-16 package and 5000VRMS isolation in an SO-16W package with a minimum of 150V/ns Common-Mode Transient Immunity (CMTI). With low power consumption and CMOS-compatible inputs, these quad-channel digital isolators are well-suited for industrial, power management, motor control, solar inverters, and automation applications. The automotive-grade API774xQ versions are AEC-Q100 qualified and optimized for EV powertrains, battery management, onboard chargers, and traction inverter systems.

Features

  • 100Mbps data rate
  • 2.5V to 5.5V supply voltage range 
  • ±150kV/μs minimum CMTI
  • CMOS Threshold inputs
  • Default output high (API774X and API774XQ) and low (API774XF and API774XFQ) options
  • Low-power consumption of 2.1mA (typical) per channel at 1Mbps
  • 11ns low propagation delay (typical)
  • Packaged in SO-16W (Type CJ) and SSOP-16 (Type CJ)
  • -40°C to +125°C operating temperature range
  • Totally lead-free and RoHS compliant
  • Halogen- and Antimony-free "Green" device
  • Safety-related certifications:
    • 8000VPK (SO-16W (Type CJ)) isolation per DIN EN IEC 60747-17 (VDE 0884-17)
    • CQC certification per GB 4943.1
    • 5000VRMS (SO-16W (Type CJ)) isolation for 1 minute per UL 1577
  • API774xQ versions are AEC-Q100 Qualified with the following results:
    • Device Temperature Grade 1
    • Device HBM ESD 8kV
    • Device CDM ESD 1.6kV

Applications

  • API774xQ versions:
    • Hybrid, electric, and power train systems (EV/HEV)
    • Battery Management Systems (BMS)
    • On-board chargers
    • Traction inverters
    • DC/DC converters
    • Inverters and motor control
  • Solar inverters
  • Motor control
  • Industrial automation
  • Power in DATA centers/Telecom equipment
  • Grid and electricity meters

Typical Application Circuit

Application Circuit Diagram - Diodes Incorporated API774x Digital Isolators

Functional Block Diagram

Block Diagram - Diodes Incorporated API774x Digital Isolators
Published: 2026-09-23 | Updated: 2026-09-23