LM397 / TL331

Measures, compares, amplifies or converts analogue signals.

Tutorial / documentation

Analogue circuits

Quick documentation & first test preparation

  1. Identify component LM397 and its package.
  2. Check input/output ranges and power supplies.
  3. Read the application circuit and stability/decoupling recommendations.
  4. Consult the application circuit in the linked documentation before testing.

LM397

Single General-Purpose Voltage Comparator with Open-Collector Output, SOT-23-5

  • Single General-Purpose Voltage Comparator with Open-Collector Output, SOT-23-5
  • Check input/output ranges and power supplies.
  • Read the application circuit and stability/decoupling recommendations.
  • The manufacturer’s pinout and absolute limits take precedence over this page.
Technical documentation

TL331

Single Differential Comparator with Open-Collector Output, SOT-23-5

  • Single Differential Comparator with Open-Collector Output, SOT-23-5
  • Check input/output ranges and power supplies.
  • Read the application circuit and stability/decoupling recommendations.
  • The manufacturer’s pinout and absolute limits take precedence over this page.
Technical documentation