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Texas Instruments ISO774x/ISO774x-Q1 Digital Isolators

Texas Instruments ISO774x/ISO774x-Q1 Quad-Channel Digital Isolators are high-performance, quad-channel digital isolators with 5000VRMS (DW package) and 2500VRMS (DBQ package) isolation ratings per UL 1577. The ISO774x/ISO774x-Q1 quad-channel isolators have reinforced insulation ratings according to VDE, CSA, TUV, and CQC standards. These devices provide high electromagnetic immunity and low emissions at low power consumption while isolating CMOS or LVCMOS digital I/Os. Each isolation channel has a logic input and output buffer separated by a silicon dioxide (SiO2) insulation barrier. These enable pins that can put the respective outputs in high impedance for multi-master driving applications and reduce power consumption. The ISO7740/ISO7740-Q1 devices have all four channels in the same direction. These ISO7741/ISO7741-Q1 devices have three forward, and one reverse-direction channel and the ISO7742/ISO7742-Q1 devices have two forward and two reverse-direction channels. The Texas Instruments ISO774x-Q1 devices are AEC-Q100 qualified for automotive applications.

Features

  • Signaling rate of up to 100Mbps
  • Robust isolation barrier
    • >100-year projected lifetime at 1500VRMS working voltage
    • Up to 5000VRMS isolation rating
    • Up to 12.8kV surge capability
    • ±100kV/µs typical CMTI
  • 2.25V to 5.5V wide supply range
  • 2.25V to 5.5V level translation
  • Default output high and low options
  • -55°C to +125°C wide temperature range
  • Low power consumption at typical 1.5mA per channel @ 1Mbps
  • The low propagation delay of 10.7ns (typ.) (5V supplies)
  • High CMTI (±75kv/µs typ.)
  • Robust Electromagnetic Compatibility (EMC)
    • System-level ESD, EFT, and surge immunity
    • ±8 kV IEC 61000-4-2 contact discharge protection across the isolation barrier
    • Low emissions
  • Isolation barrier life: >40 years
  • Wide-SOIC (DW-16) and QSOP (DBQ-16) package options
  • Safety-related certifications
    • DIN VDE V 0884-11:2017-01
    • UL 1577 component recognition program
    • CSA, CQC, and TUV certifications

Applications

  • Industrial automation
  • Motor control
  • Power supplies
  • Solar inverters
  • Medical equipment
  • Hybrid electric vehicles

Additional Resources

Videos

Related Tools

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Functional Block Diagram

Block Diagram - Texas Instruments ISO774x/ISO774x-Q1 Digital Isolators
Publicado: 2016-08-16 | Actualizado: 2025-06-13