SCPS270B August   2020  – November 2023 TCA4307

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 Electrical Characteristics
    6. 5.6 Timing Requirements
    7. 5.7 Switching 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 Hot bus insertion
      2. 7.3.2 Pre-charge voltage
      3. 7.3.3 Rise time accelerators
      4. 7.3.4 Bus ready output indicator
      5. 7.3.5 Powered-off high impedance for I2C and I/O pins
      6. 7.3.6 Supports clock stretching and arbitration
      7. 7.3.7 Stuck bus recovery
    4. 7.4 Device Functional Modes
      1. 7.4.1 Start-up and precharge
      2. 7.4.2 Bus idle
      3. 7.4.3 Bus active
      4. 7.4.4 Bus stuck
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
        1. 8.2.1.1 Series connections
        2. 8.2.1.2 Multiple connections to a common node
        3. 8.2.1.3 Propagation delays
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Curves
      4. 8.2.4 Typical Application on a Backplane
        1. 8.2.4.1 Design Requirements
        2. 8.2.4.2 Detailed Design Procedure
    3. 8.3 Power Supply Recommendations
      1. 8.3.1 Power Supply Best Practices
      2. 8.3.2 Power-on Reset Requirements
    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 Receiving Notification of Documentation Updates
    2. 9.2 Support Resources
    3. 9.3 Trademarks
    4. 9.4 Electrostatic Discharge Caution
    5. 9.5 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

Package Options

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

7.3.7 Stuck bus recovery

When SDAOUT or SCLOUT is low, an internal timer is started. After the timer expires, the TCA4307 will disconnect the IN/OUT buses and then clock the SCLOUT pin in an attempt to unstick the bus, generating up to 16 clock pulses. Once the clock pulses are complete, the device will generate a stop bit and release the bus. The device will then look for the same connection requirements as described in Section 7.4.2 before reconnecting the IN/OUT buses.