SCPS226C January   2011  – August 2018 TCA4311A

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      Simplified Schematic
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
    1.     Pin Functions
  6. 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 Typical Characteristics
  7. 7 Parameter Measurement Information
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Rise-Time Accelerators
      2. 8.3.2 READY Digital Output
      3. 8.3.3 EN Low Current Disable
    4. 8.4 Device Functional Modes
      1. 8.4.1 Start-Up
      2. 8.4.2 Connection Circuitry
      3. 8.4.3 Missing ACK Event
        1. 8.4.3.1 System Impact
        2. 8.4.3.2 System Workaround
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
        1. 9.2.1.1 Input to Output Offset Voltage
        2. 9.2.1.2 Propagation Delays
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Resistor Pull-Up Value Selection
      3. 9.2.3 Application Curves
      4. 9.2.4 Live Insertion and Capacitance Buffering CompactPCI Application
        1. 9.2.4.1 Design Requirements
        2. 9.2.4.2 Detailed Design Procedure
        3. 9.2.4.3 Application Curves
      5. 9.2.5 Live Insertion and Capacitance Buffering PCI Application
        1. 9.2.5.1 Design Requirements
        2. 9.2.5.2 Detailed Design Procedure
        3. 9.2.5.3 Application Curves
      6. 9.2.6 Repeater/Bus Extender Application
        1. 9.2.6.1 Design Requirements
        2. 9.2.6.2 Detailed Design Procedure
        3. 9.2.6.3 Application Curves
      7. 9.2.7 Systems With Disparate Supply Voltages
        1. 9.2.7.1 Design Requirements
        2. 9.2.7.2 Detailed Design Procedure
        3. 9.2.7.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Receiving Notification of Documentation Updates
    2. 12.2 Community Resources
    3. 12.3 Trademarks
    4. 12.4 Electrostatic Discharge Caution
    5. 12.5 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

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

9.2.1.1 Input to Output Offset Voltage

When a logic low voltage, VLOW1, is driven on any of the TCA4311A's data or clock pins, the TCA4311A regulates the voltage on the other side of the chip (call it VLOW2) to a slightly higher voltage, as directed by the following equation:

Equation 1. VLOW2 = VLOW1 + 75 mV + (VCC/R) × 100

where R is the bus pull-up resistance in ohms (Ω). For example, if a device is forcing SDAOUT to 10 mV where VCC = 3.3 V and the pull-up resistor R on SDAIN is 10 kΩ, then the voltage on SDAIN = 10 + 75 + (3.3/10000) × 100 = 118 mV. See the Typical Characteristics section for curves showing the offset voltage as a function of VCC and R.