SLVS238K August   1999  – September 2023 TL331 , TL331B , TL391B

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Revision History
  6. 5 Pin Configuration and Functions
    1.     Pin Functions
  7. 6 Specifications
    1. 6.1  Absolute Maximum Ratings, TL331 and TL331K
    2. 6.2  Absolute Maximum Ratings, TL331B and TL391B
    3. 6.3  ESD Ratings, TL331 and TL331K
    4. 6.4  ESD Ratings, TL331B and TL391B
    5. 6.5  Recommended Operating Conditions, TL331 and TL331K
    6. 6.6  Recommended Operating Conditions, TL331B and TL391B
    7. 6.7  Thermal Information
    8. 6.8  Electrical Characteristics, TL331B and TL391B
    9. 6.9  Switching Characteristics, TL331B and TL391B
    10. 6.10 Electrical Characteristics, TL331 and TL331K
    11. 6.11 Switching Characteristics, TL331 and TL331K
    12. 6.12 Typical Characteristics, TL331 and TL331K
    13. 6.13 Typical Characteristics, TL331B and TL391B
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
    4. 7.4 Device Functional Modes
      1. 7.4.1 Voltage Comparison
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Input Voltage Range
        2. 8.2.2.2 Minimum Overdrive Voltage
        3. 8.2.2.3 Output and Drive Current
        4. 8.2.2.4 TL331B & TL391B ESD Protection
        5. 8.2.2.5 Response Time
      3. 8.2.3 Application Curves
      4. 8.2.4 Power Supply Recommendations
      5. 8.2.5 Layout
        1. 8.2.5.1 Layout Guidelines
        2. 8.2.5.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Documentation Support
      1. 9.1.1 Related Documentation
    2. 9.2 Receiving Notification of Documentation Updates
    3. 9.3 Support Resources
    4. 9.4 Trademarks
    5. 9.5 Electrostatic Discharge Caution
    6. 9.6 Glossary
  11. 10Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • DBV|5
Thermal pad, mechanical data (Package|Pins)
Orderable Information

3 Description

The TL331B and TL391B devices are the next generation versions of the industry-standard TL331 comparator. These next generation devices provide outstanding value for cost-sensitive applications, with features including lower offset voltage, higher supply voltage capability, lower supply current, lower input bias current, lower propagation delay, wider temperature range and improved 2kV ESD performance with drop-in replacement convenience. The TL331B is a drop-in improved replacement for both the TL331I and TL331K versions, while the TL391B provides an alternate pinout of the TL331B to replace competitive devices.

Operation from dual supplies also is possible as long as the difference between the two supplies is within 2 V to 36 V, and VCC is at least 1.5 V more positive than the input common-mode voltage. Current drain is independent of the supply voltage. The outputs can be connected to other open-collector outputs to achieve wired-AND relationships.

Device Information
PART NUMBER(1) PACKAGE BODY SIZE (NOM)
TL331,
TL331B,
TL391B		 SOT-23 (5) 2.90 mm × 1.60 mm
(1) For all available packages, see the orderable addendum at the end of the data sheet
Family Comparison Table
Specification TL331B
TL391B		 TL331I TL331K Units
Supply Votlage 2 to 36 2 to 36 2 to 36 V
Total Supply Current (5V to 36V max) 0.43 0.7 0.7 mA
Temperature Range −40 to 125 -40 to 85 -40 to 105 °C
ESD (HBM) 2000 1000 1000 V
Offset Voltage (Max over temp) ± 4 ± 9 ± 9 mV
Input Bias Current (typ / max) 3.5 / 25 25 / 250 25 / 250 nA
Response Time (typ) 1 1.3 1.3 µsec