SCES937B May   2021  – February 2025 TXU0104

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  Switching Characteristics: Tsk, TMAX
    7. 5.7  Switching Characteristics, VCCA = 1.2 ± 0.1V
    8. 5.8  Switching Characteristics, VCCA = 1.5 ± 0.1V
    9. 5.9  Switching Characteristics, VCCA = 1.8 ± 0.15V
    10. 5.10 Switching Characteristics, VCCA = 2.5 ± 0.2V
    11. 5.11 Switching Characteristics, VCCA = 3.3 ± 0.3V
    12. 5.12 Switching Characteristics, VCCA = 5.0 ± 0.5V
    13. 5.13 Operating Characteristics
    14. 5.14 Typical Characteristics
  7. 6 Parameter Measurement Information
    1. 6.1 Load Circuit and Voltage Waveforms
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1  CMOS Schmitt-Trigger Inputs with Integrated Pulldowns
        1. 7.3.1.1 Inputs with Integrated Static Pull-Down Resistors
      2. 7.3.2  Control Logic (OE / OE) with VCC(MIN) Circuitry
      3. 7.3.3  Balanced High-Drive CMOS Push-Pull Outputs
      4. 7.3.4  Partial Power Down (Ioff)
      5. 7.3.5  VCC Isolation and VCC Disconnect
      6. 7.3.6  Over-Voltage Tolerant Inputs
      7. 7.3.7  Glitch-Free Power Supply Sequencing
      8. 7.3.8  Negative Clamping Diodes
      9. 7.3.9  Fully Configurable Dual-Rail Design
      10. 7.3.10 Supports High-Speed Translation
    4. 7.4 Device Functional Modes
  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
    3. 8.3 Power Supply Recommendations
    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 Device 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

7.3.1 CMOS Schmitt-Trigger Inputs with Integrated Pulldowns

Standard CMOS inputs are high impedance and are typically modeled as a resistor in parallel with the input capacitance given in the Section 5.5. The worst case resistance is calculated with the maximum input voltage, given in the Section 5.1, and the maximum input leakage current, given in the Electrical Characteristics, using ohm's law (R = V ÷ I).

The Schmitt-trigger input architecture provides hysteresis as defined by ΔVT in the Electrical Characteristics, which makes this device extremely tolerant to slow or noisy inputs. Driving the inputs slowly will increase dynamic current consumption of the device. See Understanding Schmitt Triggers for additional information regarding Schmitt-trigger inputs.