SNOSDG9 December   2024 TLV1922

PRODMIX  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
    1.     Pin Configuration: TLV1921
    2.     Pin Configurations: TLV1922
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Thermal Information - Single
    4. 5.4 Thermal Information - Dual
    5. 5.5 Recommended Operating Conditions
    6. 5.6 Electrical Characteristics
    7. 5.7 Switching Characteristics
    8. 5.8 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagrams
    3. 6.3 Feature Description
    4. 6.4 Device Functional Modes
      1. 6.4.1 Inputs
        1. 6.4.1.1 Input Voltage and Common Mode Voltage Ranges
        2. 6.4.1.2 Fail-Safe Inputs
        3. 6.4.1.3 Unused Inputs
      2. 6.4.2 Open-Drain Output
      3. 6.4.3 Reference Output
      4. 6.4.4 Power-On Reset (POR)
      5. 6.4.5 Internal Hysteresis
  8. 7 Application and Implementation
    1. 7.1 Application Information
      1. 7.1.1 Basic Comparator Definitions
        1. 7.1.1.1 Operation
        2. 7.1.1.2 Propagation Delay
        3. 7.1.1.3 Overdrive Voltage
      2. 7.1.2 Hysteresis
        1. 7.1.2.1 Inverting and Non-Inverting Hysteresis using Open-Drain Output
    2. 7.2 Typical Applications
      1. 7.2.1 Window Comparator
        1. 7.2.1.1 Design Requirements
        2. 7.2.1.2 Detailed Design Procedure
        3. 7.2.1.3 Application Curve
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Documentation Support
      1. 8.1.1 Related Documentation
    2. 8.2 Receiving Notification of Documentation Updates
    3. 8.3 Support Resources
    4. 8.4 Trademarks
    5. 8.5 Electrostatic Discharge Caution
    6. 8.6 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

Package Options

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

6.4.1.1 Input Voltage and Common Mode Voltage Ranges

The TLV192x has an input voltgae range of -0.2V to 65V and a common mode (switching threshold) range of -0.2V to (V+) - 2V. The common mode voltage (referred to as the switching threshold) is the point where the comparator transistions from one output state to the other.

The TLV192x has a "feature" where if one of the input pins remains within the common mode voltage range (-0.2V to (V+) - 2V), and the supply voltage is valid and not in POR, the output state is correct.

The following is a summary of input voltage range conditions and the outcomes:

  1. When both IN- and IN+ are within the common mode voltage range:
    1. If IN- is greater than IN+ and the offset voltage, the output is low.
    2. If IN- is less than IN+ and the offset voltage, the output is high.
    3. If IN- is equal to IN+, the output state is technically indeterminite and output state is determined by the random polarity of the internal offset votlage.
  2. When IN- is higher than the common mode voltage range and IN+ is within the common mode voltage range, the output is low.
  3. When IN+ is higher than the common mode voltage range and IN- is within the specified input voltage range, the output is high
  4. When IN- and IN+ are both outside the common mode voltage range, the output is low, regardless of which input is greater.
Operating outside the common mode range causes changes in specifications such as propagation delay and input bias current. Likewise, there is a recovery time when re-entering the common mode voltage range.