SLLSED3C June   2013  – July 2015 ISO7420FCC

UNLESS OTHERWISE NOTED, this document contains PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1  Absolute Maximum Ratings
    2. 6.2  ESD Ratings
    3. 6.3  Recommended Operating Conditions
    4. 6.4  Thermal Information
    5. 6.5  Electrical Characteristics: VCC1 and VCC2 = 5 V ± 10%
    6. 6.6  Electrical Characteristics: VCC1 and VCC2 = 3.3 V ± 10%
    7. 6.7  Electrical Characteristics: VCC1 and VCC2 = 2.7 V
    8. 6.8  Power Dissipation Characteristics
    9. 6.9  Switching Characteristics: VCC1 and VCC2 = 5 V ± 10%
    10. 6.10 Switching Characteristics: VCC1 and VCC2 = 3.3 V ± 10%
    11. 6.11 Switching Characteristics: VCC1 and VCC2 = 2.7 V
    12. 6.12 Typical Characteristics
  7. 7 Parameter Measurement Information
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Insulation and Safety-Related Specifications for SOIC-8 Package
      2. 8.3.2 Insulation Characteristics
      3. 8.3.3 Regulatory Information
      4. 8.3.4 Safety Limiting Values
    4. 8.4 Device Functional Modes
      1. 8.4.1 Device I/O Schematics
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Supply Current Equations
          1. 9.2.2.1.1 Maximum Supply Current Equations
          2. 9.2.2.1.2 Typical Supply Current Equations
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
      1. 11.1.1 PCB Material
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Documentation Support
      1. 12.1.1 Related Documentation
    2. 12.2 Community Resources
    3. 12.3 Trademarks
    4. 12.4 Electrostatic Discharge Caution
    5. 12.5 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

1 Features

  • Signaling Rate: 50 Mbps (5-V Supplies)
  • Output is Low in Default Mode
  • Integrated Noise Filter on the Input Pins
  • Low Power Consumption: Typical ICC per Channel
    • 1.8 mA at 1 Mbps, 3.9 mA at 25 Mbps (5-V Supplies)
    • 1.4 mA at 1 Mbps, 2.6 mA at 25 Mbps (3.3-V Supplies)
  • Low Propagation Delay: 20 ns Typical (5-V Supplies)
  • Channel-to-Channel Output Skew: 2 ns Maximum
  • 3.3-V and 5-V Level Translation
  • Wide TA Range Specified: –40°C to 125°C
  • 60-KV/μs Transient Immunity, Typical (5-V Supplies)
  • Low Emissions
  • Isolation Barrier Life: > 25 Years
  • Operates from 2.7-V to 5.5-V Supply Levels
  • Narrow Body SOIC-8 Package
  • Safety and Regulatory Approvals
    • 4242 VPK Isolation per DIN V VDE V 0884-10 (VDE V 0884-10):2006-12
    • 2.5 KVRMS Isolation for 1 Minute per UL 1577
    • CSA Component Acceptance Notice 5A, IEC 60950-1 and IEC 61010-1 End Equipment Standards
    • GB4943.1-2011 CQC Certification

2 Applications

  • Opto-Coupler Replacement in:
    • Industrial FieldBus
      • ProfiBus
      • ModBus
      • DeviceNet™ Data Buses
    • Servo Control Interface
    • Motor Control
    • Power Supplies
    • Battery Packs

3 Description

ISO7420FCC provides galvanic isolation up to 2500 VRMS for 1 minute per UL and 4242 VPK per VDE. This device has two isolated channels. Each channel has a logic input and output buffer separated by a silicon dioxide (SiO2) insulation barrier. Used in conjunction with isolated power supplies, this device prevents noise currents on a data bus or other circuit from entering the local ground and interfering with or damaging sensitive circuitry. The suffix F indicates low-output option in fail-safe conditions (see Table 2). This device has integrated noise filter for harsh environments where short noise pulses may be present at the device input pins.

ISO7420FCC has TTL input thresholds and operates from 2.7-V to 5.5-V supplies. All inputs are 5-V tolerant when supplied from a 2.7-V or 3.3-V supply.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
ISO7420FCC SOIC (8) 4.90 mm × 3.91 mm
  1. For all available packages, see the orderable addendum at the end of the datasheet.

Simplified Schematic

ISO7420FCC keygraphic1.png