SLCS005AG October   1979  – January 2025 LM193 , LM2903 , LM2903B , LM2903V , LM293 , LM293A , LM393 , LM393A , LM393B

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1  Absolute Maximum Ratings
    2. 5.2  Recommended Operating Conditions
    3. 5.3  Thermal Information: LMx93x and LM2903x
    4. 5.4  ESD Ratings
    5. 5.5  Electrical Characteristics LM393B
    6. 5.6  Electrical Characteristics LM2903B
    7. 5.7  Switching Characteristics LM393B and LM2903B
    8. 5.8  Electrical Characteristics for LM193, LM293, and LM393 (without A suffix)
    9. 5.9  Electrical Characteristics for LM293A and LM393A
    10. 5.10 Electrical Characteristics for LM2903, LM2903V, and LM2903AV
    11. 5.11 Switching Characteristics: LM193, LM239, LM393, LM2903, all 'A' and 'V' versions
    12. 5.12 Typical Characteristics, LMx93x and LM2903x
  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 Voltage Comparison
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
        1. 7.2.2.1 Input Voltage Range
        2. 7.2.2.2 Minimum Overdrive Voltage
        3. 7.2.2.3 Output and Drive Current
        4. 7.2.2.4 Response Time
      3. 7.2.3 Application Curves
      4. 7.2.4 Power Supply Recommendations
      5. 7.2.5 Layout
        1. 7.2.5.1 Layout Guidelines
        2. 7.2.5.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Receiving Notification of Documentation Updates
    2. 8.2 Support Resources
    3. 8.3 Trademarks
    4. 8.4 Electrostatic Discharge Caution
    5. 8.5 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

3 Description

The LM393B and LM2903B devices are the next generation versions of the industry-standard LM393 and LM2903 comparator family. These next generation B-version comparators feature lower offset voltage, higher supply voltage capability, lower supply current, lower input bias current, lower propagation delay, and improved 2 kV ESD performance and input ruggedness through dedicated ESD clamps. The LM393B and LM2903B can drop-in replace the LM293, LM393 and LM2903, for both "A" and "V" grades.

All devices consist of two independent voltage comparators that are designed to operate from a single power supply over a wide range of voltages. Quiescent current is independent of the supply voltage.

Device Information
PART NUMBER PACKAGE(1) BODY SIZE (NOM)
LM393B, LM2903B, LM193, LM293, LM293A, LM393, LM393A, LM2903, LM2903V, LM2903AV SOIC (8) 4.90mm x 3.91mm
LM393B, LM2903B, LM293, LM293A, LM393, LM393A, LM2903 VSSOP (8) 3.00mm x 3.00mm
LM293, LM393, LM393A, LM2903 PDIP (8) 9.81mm × 6.35mm
LM393, LM393A, LM2903 SO (8) 6.20mm x 5.30mm
LM393B, LM2903B, LM393, LM393A, LM2903, LM2903V, LM2903AV TSSOP (8) 3.00mm x 4.40mm
LM393B, LM2903B SOT-23 (8) 2.90mm x 1.60mm
LM393B, LM2903B WSON (8) 2.00mm × 2.00mm
(1) For all available packages, see the orderable addendum at the end of the data sheet.
Family Comparison Table
Specification LM393B LM2903B LM393
LM393A		 LM2903 LM2903V
LM2903AV		 LM193 LM293
LM293A		 Units
Supply Voltage 2 to 36 2 to 36 2 to 30 2 to 30 2 to 32 2 to 30 2 to 30 V
Total Supply Current
(5V to 36V max)		 0.6 to 0.8 0.6 to 0.8 1 to 2.5 1 to 2.5 1 to 2.5 1 to 2.5 1 to 2.5 mA
Temperature Range −40 to 85 −40 to 125 0 to 70 −40 to 125 −40 to 125 −55 to 125 −25 to 85 °C
ESD (HBM) 2000 2000 1000 1000 1000 1000 1000 V
Offset Voltage
(Max over temp)		 ± 4 ± 4 ± 9
± 4		 ± 15 ± 15
± 4		 ± 9 ± 9
± 4		 mV
Input Bias Current (typ / max) 3.5 / 25 3.5 / 25 25 / 250 25 / 250 25 / 250 25 / 100 25 / 250 nA
Response Time (typ) 1 1 1.3 1.3 1.3 1.3 1.3 µsec