SLLSG21 April   2025 ISO6540 , ISO6541 , ISO6542

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1  Absolute Maximum Ratings
    2. 5.2  ESD Ratings
    3. 5.3  Recommended Operating Conditions
    4. 5.4  Thermal Information
    5. 5.5  Package Characteristics
    6. 5.6  Electrical Characteristics—5-V Supply
    7. 5.7  Supply Current Characteristics—5-V Supply
    8. 5.8  Electrical Characteristics—3.3-V Supply
    9. 5.9  Supply Current Characteristics—3.3-V Supply
    10. 5.10 Electrical Characteristics—2.5-V Supply 
    11. 5.11 Supply Current Characteristics—2.5-V Supply
    12. 5.12 Electrical Characteristics—1.8-V Supply
    13. 5.13 Supply Current Characteristics—1.8-V Supply
    14. 5.14 Switching Characteristics—5-V Supply
    15. 5.15 Switching Characteristics—3.3-V Supply
    16. 5.16 Switching Characteristics—2.5-V Supply
    17. 5.17 Switching Characteristics—1.8-V Supply
    18. 5.18 Typical Characteristics
  7. 6 Parameter Measurement Information
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Electromagnetic Compatibility (EMC) Considerations
    4. 7.4 Device Functional Modes
    5. 7.5 Device I/O Schematics
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Curve
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Documentation Support
      1. 9.1.1 Related Documentation
    2. 9.2 Receiving Notification of Documentation Updates
    3. 9.3 Support Resources
    4. 9.4 Trademarks
    5. 9.5 Electrostatic Discharge Caution
    6. 9.6 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

8.1 Application Information

The ISO654x devices are high-performance, low power, quad-channel digital isolators. These devices come with enable pins on each side which can be used to put the respective outputs in high impedance for parallel (multiple) driver applications. TheISO654x devices use single-ended CMOS-logic switching technology.

The supply voltage range is from 1.71V to 5.5V for both supplies, VCC1 and VCC2. Since an isolation barrier separates the two sides, each side can be sourced independently with any voltage within recommended operating conditions. As an example, supplying ISO654x VCC1 with 3.3V (which is within1.71V to 5.5V) and VCC2 with 5V (which is also within 1.71V to 5.5V) is possible. You can use the digital isolator as a logic-level translator in addition to providing isolation. When designing with digital isolators, keep in mind that because of the single-ended design structure, digital isolators do not conform to any specific interface standard and are only intended for isolating single-ended CMOS or TTL digital signal lines. The isolator is typically placed between the data controller (that is, MCU or FPGA), and a data converter or a line transceiver, regardless of the interface type or standard.

Note:

ISO654x is a functional isolator, and is not certified for isolation by standard bodies. For applications that require certified isolation by standard bodies, customers must choose ISO644x, ISO674x, ISO774x or ISO784x families of digital isolators.