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The key to propagation delay in bipolar logic family is to prevent the transistors in a gate from ___________(a) Fan-in(b) Fan-out(c) Saturation(d) Cut-offThis question was posed to me in homework.I want to ask this question from Compatibility or Interfacing in division Logic Families of Digital Circuits

Answer»

The correct option is (c) Saturation

The best I can explain: The key to propagation delay in bipolar logic family is to prevent the transistors in a gate from saturation. In Saturation mode, the TRANSISTOR is in “ON”mode, where it SEEMS like a short CIRCUIT between collector and EMITTER.



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