• on Miscellaneous Electronics
  • Published in issue 10/2005 on page 0
About the article

Cascode stage or ‘collector follower’

Design Tip

Cascode stage or ‘collector follower’
All microprocessors from the 8051 family have inputs and outputs that are 'quasi-bidirectional'. This means that when power is first applied, the ports behave as inputs with a logic high level and a weak pull-up.
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