SGLS127B July   2002  – June 2025 TLC3702-EP

PRODUCTION DATA  

  1.   1
  2. 1Features
  3. 2Description
  4.   Pin Configuration and Functions
  5. 3Specifications
    1. 3.1 Absolute Maximum Ratings
    2. 3.2 Recommended Operating Conditions
    3. 3.3 Electrical Characteristics
    4. 3.4 Switching Characteristics
    5. 3.5 Typical Characteristics
  6. 4Detailed Description
    1. 4.1 Overview
    2. 4.2 Functional Block Diagrams
    3. 4.3 Feature Description
    4. 4.4 Device Functional Modes
      1. 4.4.1 Input
      2. 4.4.2 ESD Protection
      3. 4.4.3 Unused Inputs
      4. 4.4.4 Push-Pull Output
      5. 4.4.5 Hysteresis
        1. 4.4.5.1 Inverting Comparator With Hysteresis
        2. 4.4.5.2 Non-Inverting Comparator With Hysteresis
  7. 5Application and Implementation
    1. 5.1 Application Information
      1. 5.1.1 Basic Comparator Definitions
        1. 5.1.1.1 Operation
        2. 5.1.1.2 Propagation Delay
        3. 5.1.1.3 Overdrive and Underdrive Voltage
    2. 5.2 Typical Applications
      1. 5.2.1 Window Comparator
        1. 5.2.1.1 Design Requirements
        2. 5.2.1.2 Detailed Design Procedure
        3. 5.2.1.3 Application Curve
    3. 5.3 Power Supply Recommendations
    4. 5.4 Layout
      1. 5.4.1 Layout Guidelines
      2. 5.4.2 Layout Example
  8. 6Device and Documentation Support
    1. 6.1 Documentation Support
      1. 6.1.1 Related Documentation
    2. 6.2 Receiving Notification of Documentation Updates
    3. 6.3 Support Resources
    4. 6.4 Trademarks
    5. 6.5 Electrostatic Discharge Caution
    6. 6.6 Glossary
  9. 7Revision History
  10. 8Mechanical, Packaging, and Orderable Information

4.4.5.2 Non-Inverting Comparator With Hysteresis

A non-inverting comparator with hysteresis requires a two-resistor network and a voltage reference (VREF) at the inverting input, as shown in Figure 4-5.

TLC3702-EP Non-Inverting Configuration With HysteresisFigure 4-5 Non-Inverting Configuration With Hysteresis

The equivalent resistor networks when the output is high and low are shown in Figure 4-6.

TLC3702-EP Non-Inverting Configuration Resistor NetworksFigure 4-6 Non-Inverting Configuration Resistor Networks

When VIN is less than VREF,, the output is low. For the output to switch from low to high, VIN must rise above the VIN1 threshold. Use Equation 4 to calculate VIN1.

Equation 4. TLC3702-EP

When VIN is greater than VREF, the output is high. For the comparator to switch back to a low state, VIN must drop below VIN2. Use Equation 5 to calculate VIN2.

Equation 5. TLC3702-EP

The hysteresis of this circuit is the difference between VIN1 and VIN2, as shown in Equation 6.

Equation 6. TLC3702-EP

For more information, please see Application Notes SNOA997 "Inverting comparator with hysteresis circuit" and SBOA313 "Non-Inverting Comparator With Hysteresis Circuit".