SLLS868T September   2007  – April 2017 ISO7240C , ISO7240CF , ISO7240M , ISO7241C , ISO7241M , ISO7242C , ISO7242M

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Description (Continued)
  6. 6 Pin Configurations and Functions
  7. 7 Specifications
    1. 7.1  Absolute Maximum Ratings
    2. 7.2  ESD Ratings
    3. 7.3  Recommended Operating Conditions
    4. 7.4  Thermal Information
    5. 7.5  Power Ratings
    6. 7.6  Insulation Specifications
    7. 7.7  Safety-Related Certifications
    8. 7.8  Safety Limiting Values
    9. 7.9  Electrical Characteristics: VCC1 and VCC2 at 5-V Operation
    10. 7.10 Supply Current Characteristics: VCC1 and VCC2 at 5-V Operation
    11. 7.11 Electrical Characteristics: VCC1 at 5-V, VCC2 at 3.3-V Operation
    12. 7.12 Supply Current Characteristics: VCC1 at 5-V, VCC2 at 3.3-V Operation
    13. 7.13 Electrical Characteristics: VCC1 at 3.3-V, VCC2 at 5-V Operation
    14. 7.14 Supply Current Characteristics: VCC1 at 3.3-V, VCC2 at 5-V Operation
    15. 7.15 Electrical Characteristics: VCC1 and VCC2 at 3.3 V Operation
    16. 7.16 Supply Current Characteristics: VCC1 and VCC2 at 3.3 V Operation
    17. 7.17 Switching Characteristics: VCC1 and VCC2 at 5-V Operation
    18. 7.18 Switching Characteristics: VCC1 at 5-V, VCC2 at 3.3-V Operation
    19. 7.19 Switching Characteristics: VCC1 at 3.3-V and VCC2 at 5-V Operation
    20. 7.20 Switching Characteristics: VCC1 and VCC2 at 3.3-V Operation
    21. 7.21 Insulation Characteristics Curves
    22. 7.22 Typical Characteristics
  8. 8 Parameter Measurement Information
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
    4. 9.4 Device Functional Modes
      1. 9.4.1 Device I/O Schematics
  10. 10Application and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Application
      1. 10.2.1 Isolated Data Acquisition System for Process Control
        1. 10.2.1.1 Design Requirements
        2. 10.2.1.2 Detailed Design Procedure
        3. 10.2.1.3 Application Curves
      2. 10.2.2 Isolated SPI for an Analog Input Module with 16 Inputs
        1. 10.2.2.1 Design Requirements
        2. 10.2.2.2 Detailed Design Procedure
        3. 10.2.2.3 Application Curve
      3. 10.2.3 Isolated RS-232 Interface
        1. 10.2.3.1 Design Requirements
        2. 10.2.3.2 Detailed Design Procedure
        3. 10.2.3.3 Application Curve
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
      1. 12.1.1 PCB Material
    2. 12.2 Layout Example
  13. 13Device and Documentation Support
    1. 13.1 Documentation Support
      1. 13.1.1 Related Documentation
    2. 13.2 Related Links
    3. 13.3 Receiving Notification of Documentation Updates
    4. 13.4 Community Resources
    5. 13.5 Trademarks
    6. 13.6 Electrostatic Discharge Caution
    7. 13.7 Glossary
  14. 14Mechanical, Packaging, and Orderable Information

Package Options

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

1 Features

  • 25 and 150-Mbps Signaling Rate Options
    • Low Channel-to-Channel Output Skew;
      1 ns Maximum
    • Low Pulse-Width Distortion (PWD);
      2 ns Maximum
    • Low Jitter Content; 1 ns Typ at 150 Mbps
  • Selectable Default Output (ISO7240CF)
  • > 25-Year Life at Rated Working Voltage
    (see High-Voltage Lifetime of the ISO72x Family of Digital Isolators and Isolation Capacitor Lifetime Projection)
  • 4-kV ESD Protection
  • Operates With 3.3-V or 5-V Supplies
  • High Electromagnetic Immunity
    (see ISO72x Digital Isolator Magnetic-Field Immunity)
  • –40°C to +125°C Operating Temperature Range
  • Safety-Related Certifications:
    • VDE 4000 VPK Basic Insulation per DIN V VDE V 0884-10 (VDE V 0884-10):2006-12
    • 2.5 kVRMS Insulation for 1 minute per UL 1577
    • CSA Component Acceptance Notice #5A and IEC 60950-1 End Equipment Standard

2 Applications

  • Industrial Fieldbus
  • Computer Peripheral Interface
  • Servo Control Interface
  • Data Acquisition

3 Description

The ISO7240x, ISO7241x, and ISO7242x devices are quad-channel digital isolators with multiple channel configurations and output-enable functions. These devices have logic-input and logic-output buffers separated by Texas Instrument’s silicon-dioxide (SiO2) isolation barrier. Used in conjunction with isolated power supplies, these devices help block high voltage, isolate grounds, and prevent noise currents from entering the local ground and interfering with or damaging sensitive circuitry.

The ISO7240x family of devices has all four channels in the same direction. The ISO7241x family of devices has three channels in the same direction and one channel in the opposition direction. The ISO7242x family of devices has two channels in each direction.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
ISO7240CF SOIC (16) 10.30 mm × 7.50 mm
ISO7240C
ISO7240M
ISO7241C
ISO7241M
ISO7242C
ISO7242M
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Simplified Schematic

ISO7240CF ISO7240C ISO7240M ISO7241C ISO7241M ISO7242C ISO7242M simpschem_slls868.gif
VCCI and GNDI are supply and ground connections respectively for the input channels.
VCCO and GNDO are supply and ground connections respectively for the output channels.