SLLSEM3H November   2014  – May 2024 ISO7841

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
    1.     Pin 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—5V Supply
    10. 5.10 Supply Current Characteristics—5V Supply
    11. 5.11 Electrical Characteristics—3.3V Supply
    12. 5.12 Supply Current Characteristics—3.3V Supply
    13. 5.13 Electrical Characteristics—2.5V Supply
    14. 5.14 Supply Current Characteristics—2.5V Supply
    15. 5.15 Switching Characteristics—5V Supply
    16. 5.16 Switching Characteristics—3.3V Supply
    17. 5.17 Switching Characteristics—2.5V 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
  10. 9 Power Supply Recommendations
  11. 10Layout
    1. 10.1 Layout Guidelines
      1. 10.1.1 PCB Material
    2. 10.2 Layout Example
  12. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 Related Links
    3. 11.3 Receiving Notification of Documentation Updates
    4. 11.4 Support Resources
    5. 11.5 Trademarks
    6. 11.6 Electrostatic Discharge Caution
    7. 11.7 Glossary
  13. 12Revision History
  14. 13Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • DWW|16
  • DW|16
Thermal pad, mechanical data (Package|Pins)
Orderable Information

7.4 Device Functional Modes

Table 7-2 lists the ISO7841 functional modes.

Table 7-2 Function Table
VCCI VCCO INPUT
(INx)(2)		 OUTPUT ENABLE
(ENx)		 OUTPUT
(OUTx)		 COMMENTS
PU PU H H or open H Normal Operation:
A channel output assumes the logic state of the input.
L H or open L
Open H or open Default Default mode: When INx is open, the corresponding channel output goes to the default logic state. Default= High for ISO7841 and Low for ISO7841F.
X PU X L Z A low value of Output Enable causes the outputs to be high-impedance
PD PU X H or open Default Default mode: When VCCI is unpowered, a channel output assumes the logic state based on the selected default option. Default= High for IISO7841 and Low for ISO7841F.
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.
X PD X X Undetermined When VCCO is unpowered, a channel output is undetermined (1).
When VCCO transitions from unpowered to powered-up, a channel output assumes the logic state of the input
(1) The outputs are undetermined when 1.7V < VCCI, VCCO < 2.25V.
(2) A strongly driven input signal can weakly power the floating VCC through an internal protection diode and cause undetermined output.