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Logic Families and Their Characteristics problems


  • 1. Propagation delay in TTL is due to slow switching speeds.

  • Options
  • A. True
  • B. False
  • Discuss
  • 2. A pulse is not perfectly square; it takes time for the digital level to rise from 0 up to 1 and to fall from 1 down to 0.

  • Options
  • A. True
  • B. False
  • Discuss
  • 3. In TTL the noise margin is between 0.8 V and 0.4 V.

  • Options
  • A. True
  • B. False
  • Discuss
  • 4. PMOS and NMOS are commonly used for small memories and microprocessors.

  • Options
  • A. True
  • B. False
  • Discuss
  • 5. In ECL, the HIGH and LOW levels are determined by which transistor in a differential amplifier is conducting more.

  • Options
  • A. True
  • B. False
  • Discuss
  • 6. The basic part numbers of ICs are the same regardless of the manufacturer because digital logic ICs have been standardized.

  • Options
  • A. True
  • B. False
  • Discuss
  • 7. Schottky logic overcomes the saturation and stored charge problem by placing a Schottky diode across the base-to-collector junction.

  • Options
  • A. True
  • B. False
  • Discuss
  • 8. A typical fan-out for most TTL is 9.

  • Options
  • A. True
  • B. False
  • Discuss

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