4020 / 4040

Combines, stores or sequences digital signals.

Tutorial / documentation

Logic & timing

Quick documentation & first test preparation

  1. Identify component 4020 and its package.
  2. Read the truth table or timing diagram.
  3. Check the logic family, power supply and states of unused inputs.
  4. Consult the application circuit in the linked documentation before testing.

4020

Binary counter 14 stages (asynchronous)

  • Binary counter 14 stages (asynchronous)
  • Read the truth table or timing diagram.
  • Check the logic family, power supply and states of unused inputs.
  • The manufacturer’s pinout and absolute limits take precedence over this page.
Technical documentation

4040

Binary Counter 12 stages (Asynchronous)

  • Binary Counter 12 stages (Asynchronous)
  • Read the truth table or timing diagram.
  • Check the logic family, power supply and states of unused inputs.
  • The manufacturer’s pinout and absolute limits take precedence over this page.
Technical documentation