Digital Electronics and Logic Design MCQs with answers Page - 26

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Q. 1. Open collector output 2. Totem-Pole Output 3. Tri-state output are the type of

  • (A) ttl logic
  • (B) rtl logic
  • (C) cmos logic
  • (D) none of this

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Q. Which logic family combines the advantages of CMOS and TTL?

  • (A) bicmos
  • (B) ttl/cmos
  • (C) ecl
  • (D) ttl/mos

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Q. Which is not part of emitter-coupled logic (ECL)?

  • (A) differential amplifier
  • (B) bias circuit
  • (C) emitter- follower circuit
  • (D) totem- pole circuit

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Q. PMOS and NMOS circuits are used largely in

  • (A) msi functions
  • (B) lsi functions
  • (C) diode functions
  • (D) ttl functions

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Q. The nominal value of the dc supply voltage for TTL and CMOS is

  • (A) 3 v
  • (B) 5 v
  • (C) 10 v
  • (D) 12 v

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Q. If ICCH is specified as 1.1 mA when VCC is 5 V and if the gate is in a static (noncharging) HIGH output state, the power dissipation (PD) of the gate is

  • (A) 5.5 mw
  • (B) 5mw
  • (C) 5.5 w
  • (D) 1.1mw

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Q. The switching speed of CMOS is now

  • (A) competitive with ttl
  • (B) three times that of tt
  • (C) slower than ttl
  • (D) twice that of ttl

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Q. One advantage TTL has over CMOS is that TTL is

  • (A) less expensive
  • (B) not sensitive to electrostatic discharge
  • (C) faster
  • (D) more widely available

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Q. TTL operates from a

  • (A) 9-volt suppl
  • (B) 3-volt supply
  • (C) 12-volt supply
  • (D) 5-volt supply

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Q. A CMOS IC operating from a 3-volt supply will consume

  • (A) less power than a ttl ic
  • (B) more power than a ttl ic
  • (C) the same power as a ttl ic
  • (D) no power at all

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