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Digital Electronics
‣
Integrated Circuit Technologies
Comments
Question
Most TTL logic used today is some form of ________.
Options
A. Schottky TTL
B. tristate TTL
C. low-power TTL
D. open-collector TTL
Correct Answer
Schottky TTL
Integrated Circuit Technologies problems
Search Results
1. The greater the propagation delay, the ________.
Options
A. lower the maximum frequency
B. higher the maximum frequency
C. maximum frequency is unaffected
D. minimum frequency is unaffected
Show Answer
Scratch Pad
Discuss
Correct Answer: lower the maximum frequency
2. A TTL NAND gate with I
IL(max)
of ?1.6 mA per input drives eight TTL inputs. How much current does the drive output sink?
Options
A. ?12.8 mA
B. ?8 mA
C. ?1.6 mA
D. ?25.6 mA
Show Answer
Scratch Pad
Discuss
Correct Answer: ?12.8 mA
3. What is the speed of the up/down digital-ramp ADC (tracking ADC)?
Options
A. 20 µs
B. 10 µs
C. 1 µs
D. Relatively slow
Show Answer
Scratch Pad
Discuss
Correct Answer: Relatively slow
4. The primary disadvantage of the simultaneous A/D converter is:
Options
A. that it requires the input voltage to be applied to the inputs simultaneously
B. the long conversion time required
C. the large number of output lines required to simultaneously decode the input voltage
D. the large number of comparators required to represent a reasonable sized binary number
Show Answer
Scratch Pad
Discuss
Correct Answer: the large number of comparators required to represent a reasonable sized binary number
5. What is the acquisition time of the AD1154 sample-and-hold IC?
Options
A. 1.5 µs
B. 2.5 µs
C. 3.5 µs
D. 4.5 µs
Show Answer
Scratch Pad
Discuss
Correct Answer: 3.5 µs
6. Which logic family combines the advantages of CMOS and TTL?
Options
A. BiCMOS
B. TTL/CMOS
C. ECL
D. TTL/MOS
Show Answer
Scratch Pad
Discuss
Correct Answer: BiCMOS
7. Which is not part of emitter-coupled logic (ECL)?
Options
A. Differential amplifier
B. Bias circuit
C. Emitter-follower circuit
D. Totem-pole circuit
Show Answer
Scratch Pad
Discuss
Correct Answer: Totem-pole circuit
8. Which transistor element is used in CMOS logic?
Options
A. FET
B. MOSFET
C. Bipolar
D. Unijunction
Show Answer
Scratch Pad
Discuss
Correct Answer: MOSFET
9. Which is not a MOSFET terminal?
Options
A. Gate
B. Drain
C. Source
D. Base
Show Answer
Scratch Pad
Discuss
Correct Answer: Base
10. Which equation is correct?
Options
A. V
NL
= V
IL(max)
+ V
OL(max)
B. V
NH
= V
OH(min)
+ V
IH(min)
C. V
NL
= V
OH(min)
? V
IH(min)
D. V
NH
= V
OH(min)
? V
IH(min)
Show Answer
Scratch Pad
Discuss
Correct Answer: V
NH
= V
OH(min)
? V
IH(min)
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