SCPS113O october   2004  – september 2023 PCA9306

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Revision History
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    1. 6.1  Absolute Maximum Ratings
    2. 6.2  ESD Ratings
    3. 6.3  Recommended Operating Conditions
    4. 6.4  Thermal Information
    5. 6.5  Electrical Characteristics
    6. 6.6  Switching Characteristics AC Performance (Translating Down) (EN = 3.3 V)
    7. 6.7  Switching Characteristics AC Performance (Translating Down) (EN = 2.5 V)
    8. 6.8  Switching Characteristics AC Performance (Translating Up) (EN = 3.3 V)
    9. 6.9  Switching Characteristics AC Performance (Translating Up) (EN = 2.5 V)
    10. 6.10 Typical Characteristics
  8. 7 Parameter Measurement Information
  9. 8 Detailed Description
    1. 8.1 Overview
      1. 8.1.1 Definition of threshold voltage
      2. 8.1.2 Correct Device Set Up
      3. 8.1.3 Disconnecting an I2C target from the Main I2C Bus Using the EN Pin
      4. 8.1.4 Supporting Remote Board Insertion to Backplane with PCA9306
      5. 8.1.5 Switch Configuration
      6. 8.1.6 Controller on Side 1 or Side 2 of Device
      7. 8.1.7 LDO and PCA9306 Concerns
      8. 8.1.8 Current Limiting Resistance on VREF2
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Enable (EN) Pin
      2. 8.3.2 Voltage Translation
    4. 8.4 Device Functional Modes
  10. 9 Application and Implementation
    1. 9.1 Application Information
      1. 9.1.1 General Applications of I2C
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Bidirectional Voltage Translation
        2. 9.2.2.2 Sizing Pullup Resistors
        3. 9.2.2.3 PCA9306 Bandwidth
      3. 9.2.3 Application Curve
  11. 10Power Supply Recommendations
  12. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  13. 12Device and Documentation Support
    1. 12.1 Receiving Notification of Documentation Updates
    2. 12.2 Support Resources
    3. 12.3 Trademarks
    4. 12.4 Electrostatic Discharge Caution
    5. 12.5 Glossary
  14.   Mechanical, Packaging, and Orderable Information

Package Options

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

10 Power Supply Recommendations

For supplying power to the PCA9306 device, the VREF1 pin can be connected directly to a power supply. The VREF2 pin must be connected to the VDPU power supply through a 200-kΩ resistor. Failure to have a high-impedance resistor between VREF2 and VDPU results in excessive current draw and unreliable device operation. It is also worth noting, that in order to support voltage translation, the PCA9306 must have the EN and VREF2 pins shorted and then pulled up to VDPU through a high-impedance resistor.