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Texas Instruments ISO642x & ISO642x-Q1 Digital Isolators

Texas Instruments ISO642x and ISO642x-Q1 Digital Isolators are general-purpose, basic, and reinforced, dual-channel digital isolators. These digital isolators are designed for applications requiring up to 5000VRMS isolation rating per UL 1577. The ISO642x and ISO642x-Q1 digital isolators provide high EMC performance while isolating CMOS or LVCMOS digital I/Os and use SiO2 as the isolation barrier. Each isolation channel has a logic input and output buffer separated by the insulation barrier. The devices are also certified by VDE, TUV, and CQC. The ISO642x and ISO642x-Q1 digital isolators support SPI up to 25MHz at 5V and 20.8MHz at 3.3V. The ISO642x-Q1 devices are AEC-Q100 qualified for automotive applications. Typical applications include power supplies, motor drives, factory automation, building automation, lighting, appliances, BMS, on-board chargers, DC/DC converters, inverters, and motor control.

Features

  • AEC-Q100 qualified with device temperature Grade 1 of -40°C to +125°C ambient operating temperature range
  • Up to 150Mbps data rate
  • Robust SiO2 isolation barrier:
    • High lifetime at up to 1061VRMS and 1500VDC working voltage
    • Up to 5000VRMS isolation rating
    • Up to 10.4kV surge capability
    • Up to ±250kV/μs typical CMTI
  • 2.25V to 5.5V supply voltage range
  • Overvoltage-tolerant inputs
  • Default output high (ISO642x-Q1 and ISO642x) and low (ISO642xF and ISO642xF-Q1) options
  • 10ns maximum at 5V, 12ns maximum at 3.3V low propagation delay
  • Supports SPI up to 25MHz at 5V and 20.8MHz at 3.3V
  • Low pulse width distortion of 1.8ns maximum at 5V, 2.2ns maximum at 3.3V
  • Robust Electromagnetic Compatibility (EMC):
    • System-level RI, ESD, and surge immunity
    • Low emissions
  • Package:
    • SOIC (D-8)
    • Wide-SOIC (DWV-8)
  • Safety-related certifications (planned):
    • DIN EN IEC 60747-17 (VDE 0884-17)
    • UL 1577 and CSA CAS notice No. 5A
    • IEC 62368-1, IEC 61010-1, and GB 4943.1 certifications

Applications

  • Power supplies
  • Grid, electricity meter
  • Motor drives
  • Factory automation
  • Building automation
  • Lighting
  • Appliances
  • Hybrid, electric, and power train system (EV/HEV):
    • Battery Management System (BMS)
    • On-board charger
    • DC/DC converter
    • Inverter and motor control

Functional Block Diagram

Block Diagram - Texas Instruments ISO642x & ISO642x-Q1 Digital Isolators

Simplified Schematic

Schematic - Texas Instruments ISO642x & ISO642x-Q1 Digital Isolators

Datasheets

Veröffentlichungsdatum: 2026-06-25 | Aktualisiert: 2026-06-30