SLVSL49 July   2026 LM2903L-Q1

ADVMIX  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
    1. 4.1 Pin Functions: Single TL331L-Q1
    2. 4.2 Pin Configuration: Dual LM2903L-Q1
  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 - Single
    5. 5.5 Thermal Information - Dual
    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 Diagram
    3. 6.3 Feature Description
    4. 6.4 Device Functional Modes
      1. 6.4.1 Outputs
        1. 6.4.1.1 Comparator Output
      2. 6.4.2 Output Latching
        1. 6.4.2.1 Clear (CLR) Input
        2. 6.4.2.2 Transparent Mode
        3. 6.4.2.3 Latch Behavior
      3. 6.4.3 Inputs
        1. 6.4.3.1 Fail-Safe Inputs and Input Voltage Range
        2. 6.4.3.2 Input Protection
        3. 6.4.3.3 Internal Hysteresis
        4. 6.4.3.4 Unused Inputs
  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. 7.2 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

6.4.1.1 Comparator Output

The TL331L-Q1 and LM2903L-Q1 features an open-collector (also commonly called open-drain) sinking-only output stage enabling the output logic levels to be pulled up to any voltage up to 36V, independent of the comparator supply voltage (VS). The open-collector output also allows logical OR'ing of multiple open-collector outputs and logic level translation.

Unused open-collector outputs can be left floating, or can be tied to the V- pin if floating pins are not allowed.

The open-collector output protection consists of a ESD clamp between the output and V- to allow the output to be pulled to any voltage up to a maximum of 36V, even if the pull-up voltage exceeds V+.