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

4.4.5.1 Inverting Comparator With Hysteresis

The inverting comparator with hysteresis requires a three-resistor network that is referenced to the comparator supply voltage (VCC), as shown below.

TLC3702-EP Inverting Configuration With HysteresisFigure 4-3 Inverting Configuration With Hysteresis

The equivalent resistor networks when the output is high and low are shown below.

TLC3702-EP Inverting Configuration Resistor Equivalent NetworksFigure 4-4 Inverting Configuration Resistor Equivalent Networks

When VIN is less than VA, the output voltage is high (for simplicity, assume VO switches as high as VCC). The three network resistors can be represented as R1 || R3 in series with R2, as shown above on the left.

The equation below defines the high-to-low trip voltage (VA1).

Equation 1. TLC3702-EP

When VIN is greater than VA, the output voltage is low. In this case, the three network resistors can be presented as R2 || R3 in series with R1, as shown above on the right.

Use the equation below to define the low to high trip voltage (VA2).

Equation 2. TLC3702-EP

The equation below defines the total hysteresis provided by the network.

Equation 3. TLC3702-EP