Dual Channel, 1Mbps Digital Isolator

Dual Channel, 1Mbps Digital Isolator

The ISO7420 and ISO7421A provide galvanic isolation up to 2.5 kVrms for 1 minute per UL. These digital isolators have two isolated channels with bidirectional channel configuration. Each isolation channel has a logic input and output buffer separated by a silicon dioxide (SiO2) insulation barrier. Used in conjunction with isolated power supplies, these devices prevent noise currents on a data bus or other circuit from entering the local ground and interfering with or damaging sensitive circuitry.

The devices have TTL input thresholds and require two supply voltages from 3 V to 5.5 V, or any combination. All inputs are 5-V tolerant when supplied from a 3-V supply.

Features
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified with the following results:
  • Device Temperature Grade 1:
  • –40°C to +125°C Ambient Operating Temperature Range
  • Device HBM ESD Classification Level H3A
  • Device CDM ESD Classification Level C5
  • High Signaling Rate: 1 Mbps
  • Low Power Consumption
  • Low Propagation Delay – 9 ns (Typ)
  • Low Skew – 300 ps (Typ)
  • 4 kVpeak Maximum Isolation, 2.5 kVrms per UL 1577, IEC/VDE and
  • CSA Approved, IEC 60950-1, IEC 61010-1 End Equipment Standards
  • Approved. All Approvals Pending.
  • 50 kV/µs Transient Immunity (Typ)
  • Over 25-Year Isolation Integrity at Rated Voltage
  • Operates From 3-V to 5.5-V Supply and Logic Levels
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