Bipolar transistors

Which is a typical family of logic ICs built with bipolar transistors?

  1. ATTL
  2. BCMOS 4000 series
  3. CNMOS logic
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Answer: A. TTL

TTL (transistor-transistor logic) is a family of logic ICs built with bipolar transistors and was once the standard for digital circuits. CMOS, with its lower power consumption, is now mainstream, but traces of TTL remain in TTL-compatible CMOS logic.

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More Bipolar transistors questions

  1. Which pairing of a technology that integrates bipolar transistors and CMOS on the same chip with its purpose is correct?
  2. Which set correctly names the three terminals of a bipolar transistor?
  3. In the circuit symbol of an NPN transistor, which way does the arrow on the emitter point?
  4. Which correctly relates the emitter current IE, base current IB and collector current IC of a bipolar transistor?
  5. A transistor with DC current gain hFE = 100 has a base current of 10 μA. Roughly what is the collector current in the active region?