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Digital ElectronicsDigital Interfaces

Multiple compatible open-collector outputs may share a properly pulled-up line to realize which useful connection, provided the logic convention is accounted for?

  • AWired logic
  • BAn analog integrator
  • CA flash ADC
  • DA ring oscillator only
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Correct Answer: A. Wired logic
Explanation: Because any active open-collector transistor can pull the common node LOW while inactive outputs release it, compatible outputs can share a pull-up line to implement wired logic.
Reference: Standard digital electronics: wired logic
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