SLLSFY7 November   2025 ISOW6441 , ISOW6442

ADVANCE INFORMATION  

  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 - Power Converter
    10. 5.10 Supply Current Characteristics - Power Converter
    11. 5.11 Electrical Characteristics Channel Isolator - VDD = 5V, VDDL = 5V, VISO=5V
    12. 5.12 Supply Current Characteristics Channel Isolator - VDD, VDDL = 5V, VISO = 5V
    13. 5.13 Electrical Characteristics Channel Isolator - VDD = 5V, VDDL = 5V, VISO=3.3V
    14. 5.14 Supply Current Characteristics Channel Isolator - VDD, VDDL = 5V, VISO = 3.3V
    15. 5.15 Electrical Characteristics Channel Isolator - VDD = 3.3V, VDDL = 3.3V, VISO = 3.3V
    16. 5.16 Supply Current Characteristics Channel Isolator - VDD, VDDL = 3.3V, VISO = 3.3V
    17. 5.17 Electrical Characteristics Channel Isolator - VDDL = 2.5V
    18. 5.18 Supply Current Characteristics Channel Isolator - VDDL = 2.5V
    19. 5.19 Switching Characteristics - VDDL = 5V, VISO = 5V
    20. 5.20 Switching Characteristics - VDDL = 3.3V, VISO = 3.3V
    21. 5.21 Switching Characteristics - VDDL = 2.5V, VISO = 5V
    22. 5.22 Switching Characteristics - VDDL = 2.5V, VISO = 3.3V
  7. 6 Parameter Measurement Information
  8. 7 Detailed Description
    1. 7.1 Overview
      1. 7.1.1 Power Isolation
      2. 7.1.2 Signal Isolation
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Electromagnetic Compatibility (EMC) Considerations
      2. 7.3.2 Power-Up and Power-Down Behavior
      3. 7.3.3 Protection Features
    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. 8.3 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 Device Support
      1. 9.1.1 Development Support
    2. 9.2 Documentation Support
      1. 9.2.1 Related Documentation
    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
    1.     PACKAGE OPTION ADDENDUM
    2. 11.1 Tape and Reel Information

7.4 Device Functional Modes

Table 7-2 lists the supply configurations for these devices.

Table 7-2 Supply Configuration Function Table
VDD VSEL VISO
5V High (shorted to VISO)

5V

5V

 Low (shorted to GND2)

3.3V

3.3V

 Low (shorted to GND2)

3.3V
3.3V High (shorted to VISO)

Not supported
Table 7-3 Device Functional Modes

INPUT SUPPLY (VDD)

INPUT (INx)

OUTPUT (OUTx)

COMMENTS

PU

H

H

 Output channel assumes the logic state of the input

L

L

Open

Default

 Default mode(1) When INx is open, the corresponding output channel assumes logic based on default output mode of selected version

PD

X

Undetermined
(1) In the default condition, the output is high for ISOW644x and low for ISOW644x with the F suffix.

Table 7-4 lists the channel isolators functional modes for these devices.

Table 7-4 Isolation Channel Function Table
CHANNEL INPUT SUPPLY (VCCI) (1)CHANNEL OUTPUT SUPPLY (VCCO)(1)INPUT (INx)OUTPUT
(OUTx)		COMMENTS
PU

PU

H

H

Normal Operation: A channel output assumes the logic state of the input.
L

L

Open

Default

Default mode(2): When INx is open, the corresponding channel output goes to the default logic state.

X

Z and Default

A low value of output enable causes the outputs of the same side to be high impedance and the output of opposite side to be fail-safe default state.

PD

PU

X

Default

Default mode(2): When VCCI is unpowered, a channel output assumes the logic state based on the selected default option. 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.
(1) VCCI = Input-side VDDVDDL or VISO; VCCO = Output-side VDDVDDL or VISO; PU = Powered up ( VDD > 2.86V, VDDL > 2.25V, VISO> 3V); PD = Powered down (VDD<2.44V, VDDL < 1.6V, VISO < 3V); X = Irrelevant; H = High level; L = Low level.
(2) In the default condition, the output is high for the ISOW644x device and low with the F suffix.