SNOSDB3E June   2020  – November 2023 LM339LV-Q1 , LM393LV-Q1 , TL331LV-Q1 , TL391LV-Q1

PRODMIX  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
    1. 4.1 Pin Functions for TL331LV-Q1 and TL391LV-Q1
    2. 4.2 Pin Functions: LM393LV-Q1
    3. 4.3 Pin Functions: LM339LV-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 for TL3x1LV-Q1
    5. 5.5  Thermal Information, LM393LV-Q1
    6. 5.6  Thermal Information, LM339LV-Q1
    7. 5.7  Electrical Characteristics, TL3x1LV-Q1
    8. 5.8  Switching Characteristics, TL3x1LV-Q1
    9. 5.9  Electrical Characteristics, LM393LV-Q1
    10. 5.10 Switching Characteristics, LM393LV-Q1
    11. 5.11 Electrical Characteristics, LM339LV-Q1
    12. 5.12 Switching Characteristics, LM339LV-Q1
    13. 5.13 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 Open Drain Output
      2. 6.4.2 Power-On-Reset (POR)
      3. 6.4.3 Inputs
        1. 6.4.3.1 Rail to Rail Input
        2. 6.4.3.2 Fault Tolerant Inputs
        3. 6.4.3.3 Input Protection
      4. 6.4.4 ESD Protection
      5. 6.4.5 Unused Inputs
      6. 6.4.6 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 Comparator With Hysteresis
        2. 7.1.2.2 Non-Inverting Comparator With Hysteresis
    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
      2. 7.2.2 Square-Wave Oscillator
        1. 7.2.2.1 Design Requirements
        2. 7.2.2.2 Detailed Design Procedure
        3. 7.2.2.3 Application Curve
      3. 7.2.3 Adjustable Pulse Width Generator
      4. 7.2.4 Time Delay Generator
      5. 7.2.5 Logic Level Shifter
      6. 7.2.6 One-Shot Multivibrator
      7. 7.2.7 Bi-Stable Multivibrator
      8. 7.2.8 Zero Crossing Detector
      9. 7.2.9 Pulse Slicer
    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 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

6.4.4 ESD Protection

The LV family incorporates internal ESD protection circuits on all pins. The inputs, and the open-drain output, use a proprietary "snapback" type ESD clamp from each pin to GND, which allows the pins to exceed the supply voltage (V+). While shown as Zener diodes, snapbacks momentarily "short" and go low impedance (like an SCR) when the threshold is exceeded, as opposed to clamping to a defined voltage like a Zener. There is no ESD clamp from the inputs to V+.

The open-drain output protection also consists of a ESD clamp between the output and GND to allow the output to be pulled above V+ to a maximum of 5.5V. There is no ESD clamp from the output to V+.

If the inputs are to be connected to a low impedance source, such as a power supply or buffered reference line, TI recommends adding a current-limiting resistor in series with the input to limit any transient currents should the clamps conduct. The current should be limited 10 mA or less. This series resistance can be part of any resistive input dividers or networks.

TI does not specify the performance of the ESD clamps and external clamping diodes should be added if the inputs or output could exceed the maximum ratings as part of normal operation.