SLCS141M May   2003  – December 2024 LM2903-Q1 , LM2903B-Q1

PRODUCTION DATA  

  1.   1
  2.   Features
  3.   Applications
  4.   Description
  5. 1Pin Configuration and Functions
    1. 1.1 Pin Functions
  6. 2Specifications
    1. 2.1  Absolute Maximum Ratings, LM2903-Q1 and LM2903E-Q1
    2. 2.2  Absolute Maximum Ratings, LM2903B-Q1
    3. 2.3  ESD Ratings, LM2903-Q1 and LM2903E-Q1
    4. 2.4  ESD Ratings, LM2903B-Q1
    5. 2.5  Recommended Operating Conditions, LM2903B-Q1
    6. 2.6  Recommended Operating Conditions, LM2903-Q1
    7. 2.7  Recommended Operating Conditions, LM2903E-Q1
    8. 2.8  Thermal Information
    9. 2.9  Electrical Characteristics LM2903B - Q1
    10. 2.10 Switching Characteristics LM2903B - Q1
    11. 2.11 LM2903B-Q1 "T", "R" and "H" Temperature Test Options
    12. 2.12 Electrical Characteristics, LM2903-Q1 and LM2903E-Q1
    13. 2.13 Switching Characteristics, LM2903-Q1 and LM2903E-Q1
    14. 2.14 Typical Characteristics
  7. 3Detailed Description
    1. 3.1 Overview
    2. 3.2 Functional Block Diagram
    3. 3.3 Feature Description
    4. 3.4 Device Functional Modes
      1. 3.4.1 Voltage Comparison
  8. 4Application and Implementation
    1. 4.1 Application Information
    2. 4.2 Typical Application
      1. 4.2.1 Design Requirements
      2. 4.2.2 Detailed Design Procedure
        1. 4.2.2.1 Input Voltage Range
        2. 4.2.2.2 Minimum Overdrive Voltage
        3. 4.2.2.3 Output and Drive Current
        4. 4.2.2.4 Response Time
      3. 4.2.3 Application Curves
    3. 4.3 Power Supply Recommendations
    4. 4.4 Layout
      1. 4.4.1 Layout Guidelines
      2. 4.4.2 Layout Example
  9. 5Device and Documentation Support
    1. 5.1 Documentation Support
      1. 5.1.1 Related Documentation
    2. 5.2 Receiving Notification of Documentation Updates
    3. 5.3 Support Resources
    4. 5.4 Trademarks
    5. 5.5 Electrostatic Discharge Caution
    6. 5.6 Glossary
  10. 6Revision History
  11. 7Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • D|8
  • DGK|8
  • DDF|8
  • PW|8
  • DSG|8
Thermal pad, mechanical data (Package|Pins)
Orderable Information

4.2.2.1 Input Voltage Range

When choosing the input voltage range, the input common mode voltage range (VICR) must be taken in to account. If temperature operation is above or below 25°C the VICR can range from 0V to VCC– 2V. This limits the input voltage range to as high as VCC– 2.0V and as low as 0V. Operation outside of this range can yield incorrect comparisons.

Below is a list of input voltage situation and the outcomes:

  1. When both IN- and IN+ are both within the common mode range:
    1. If IN- is higher than IN+ and the offset voltage, the output is low and the output transistor is sinking current
    2. If IN- is lower than IN+ and the offset voltage, the output is high impedance and the output transistor is not conducting
  2. When IN- is higher than common mode and IN+ is within common mode, the output is low and the output transistor is sinking current
  3. When IN+ is higher than common mode and IN- is within common mode, the output is high impedance and the output transistor is not conducting
  4. When IN- and IN+ are both higher than common mode, see Section 2 of Application Design Guidelines for LM339, LM393, TL331 Family Comparators Including the New B-versions