SLLSEU0G November   2016  – October 2024 ISO7740-Q1 , ISO7741-Q1 , ISO7742-Q1

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  Power Ratings
    6. 5.6  Insulation Specifications
    7. 5.7  Safety-Related Certifications
    8. 5.8  Safety Limiting Values
    9. 5.9  Electrical Characteristics—5-V Supply
    10. 5.10 Supply Current Characteristics—5-V Supply
    11. 5.11 Electrical Characteristics—3.3-V Supply
    12. 5.12 Supply Current Characteristics—3.3-V Supply
    13. 5.13 Electrical Characteristics—2.5-V Supply 
    14. 5.14 Supply Current Characteristics—2.5-V Supply
    15. 5.15 Switching Characteristics—5-V Supply
    16. 5.16 Switching Characteristics—3.3-V Supply
    17. 5.17 Switching Characteristics—2.5-V Supply
    18. 5.18 Insulation Characteristics Curves
    19. 5.19 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
      1. 7.4.1 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
        1. 8.2.3.1 Insulation Lifetime
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
        1. 8.4.1.1 PCB Material
      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 Related Links
    3. 9.3 Receiving Notification of Documentation Updates
    4. 9.4 Support Resources
    5. 9.5 Trademarks
    6. 9.6 Electrostatic Discharge Caution
    7. 9.7 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

7.4 Device Functional Modes

Table 7-2 lists the functional modes for the ISO774x-Q1 devices.

Table 7-2 Function Table
VCCI(1)VCCOINPUT
(INx)(3)		OUTPUT ENABLE
(ENx)		OUTPUT
(OUTx)		COMMENTS
PUPUHH or openHNormal Operation:
A channel output assumes the logic state of the input.
LH or openL
OpenH or openDefaultDefault mode: When INx is open, the corresponding channel output goes to the default logic state. Default is High for ISO774x-Q1 and Low for ISO774x-Q1 with F suffix.
XPUXLZA low value of output enable causes the outputs to be high-impedance.
PDPUXH or openDefaultDefault mode: When VCCI is unpowered, a channel output assumes the logic state based on the selected default option. Default is High for ISO774x-Q1 and Low for ISO774x-Q1 with F suffix.
When VCCI transitions from unpowered to powered-up, a channel output assumes the logic state of the input.
When VCCI transitions from powered-up to unpowered, channel output assumes the selected default state.
XPDXXUndeterminedWhen VCCO is unpowered, a channel output is undetermined(2).
When VCCO transitions from unpowered to powered-up, a channel output assumes the logic state of the input.
(1) VCCI = Input-side VCC; VCCO = Output-side VCC; PU = Powered up (VCC ≥ 2.25 V); PD = Powered down (VCC ≤ 1.7 V); X = Irrelevant; H = High level; L = Low level ; Z = High Impedance
(2) The outputs are in undetermined state when 1.7 V < VCCI, VCCO < 2.25 V.
(3) A strongly driven input signal can weakly power the floating VCC through an internal protection diode and cause undetermined output.