Standard Logic Devices (SLD) Questions and Answers

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Showing 10 of 25 questions
Q1
A digital logic device used as a buffer should have what input/output characteristics?
  • A high input impedance and high output impedance
  • B low input impedance and high output impedance
  • C low input impedance and low output impedance
  • D high input impedance and low output impedance
Answer: Option D
Q2
What is the standard TTL noise margin?
  • A 5.0 V
  • B 0.2 V
  • C 0.8 V
  • D 0.4 V
Answer: Option D
Q3
The range of a valid LOW input is:
  • A 0.0 V to 0.4 V
  • B 0.4 V to 0.8 V
  • C 0.4 V to 1.8 V
  • D 0.4 V to 2.4 V
Answer: Option B
Q4
When an IC has two rows of parallel connecting pins, the device is referred to as:
  • A a QFP
  • B a DIP
  • C a phase splitter
  • D CMOS
Answer: Option B
Q5
Which digital IC package type makes the most efficient use of printed circuit board space?
  • A SMT
  • B TO can
  • C flat pack
  • D DIP
Answer: Option A
Q6
The problem of interfacing IC logic families that have different supply voltages (VCCs) can be solved by using a:
  • A level-shifter
  • B tri-state shifter
  • C translator
  • D level-shifter or translator
Answer: Option D
Q7
Ten TTL loads per TTL driver is known as:
  • A noise immunity
  • B power dissipation
  • C fanout
  • D propagation delay
Answer: Option C
Q8
Which of the following summarizes the important features of emitter-coupled logic (ECL)?
  • A negative voltage operation, high speed, and high power consumption
  • B good noise immunity, negative logic, high frequency capability, low power dissipation, and short propagation time
  • C slow propagation time, high frequency response, low power consumption, and high output voltage swings
  • D poor noise immunity, positive supply voltage operation, good low-frequency operation, and low power
Answer: Option A
Q9
What quantities must be compatible when interfacing two different logic families?
  • A only the currents
  • B both the voltages and the currents
  • C only the voltages
  • D both the power dissipation and the impedance
Answer: Option B
Q10
CMOS logic is probably the best all-around circuitry because of its:
  • A packing density
  • B low power consumption
  • C very high noise immunity
  • D low power consumption and very high noise immunity
Answer: Option D

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