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Commercial ECL families are not nearly as popular as TTL and CMOS mainly because they ___________(a) Produces too much noise(b) Consume too much power(c) Have high fan-in(d) Have high fan-outThe question was posed to me in an international level competition.My question is from Compatibility or Interfacing topic in chapter Logic Families of Digital Circuits

Answer»

The correct OPTION is (B) Consume too much power

For explanation I would say: Commercial ECL families are not nearly as popular as TTL and CMOS mainly because they consume too much power. CMOS CONSUMES the LEAST power while TTL provides high speed.



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