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Digital Electronics
‣
Integrated Circuit Technologies
Comments
Question
An open-collector output requires ________.
Options
A. a pull-down resistor
B. a pull-up resistor
C. no output resistor
D. an output resistor
Correct Answer
a pull-up resistor
Integrated Circuit Technologies problems
Search Results
1. For a CMOS gate, which is the best speed-power product?
Options
A. 1.4 pJ
B. 1.6 pJ
C. 2.4 pJ
D. 3.3 pJ
Show Answer
Scratch Pad
Discuss
Correct Answer: 1.4 pJ
2. It is best not to leave unused TTL inputs unconnected (open) because of TTL's ________.
Options
A. noise sensitivity
B. low-current requirement
C. open-collector outputs
D. tristate construction
Show Answer
Scratch Pad
Discuss
Correct Answer: noise sensitivity
3. A standard TTL circuit with a totem-pole output can sink, in the LOW state (I
OL(max)
), ________.
Options
A. 16 mA
B. 20 mA
C. 16 µA
D. 20 µA
Show Answer
Scratch Pad
Discuss
Correct Answer: 16 mA
4. 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)
5. Which is not a MOSFET terminal?
Options
A. Gate
B. Drain
C. Source
D. Base
Show Answer
Scratch Pad
Discuss
Correct Answer: Base
6. TTL is alive and well, particularly in ________.
Options
A. industrial applications
B. educational applications
C. military applications
D. commercial applications
Show Answer
Scratch Pad
Discuss
Correct Answer: educational applications
7. The active switching element used in all TTL circuits is the ________.
Options
A. bipolar junction transistor (BJT)
B. field-effect transistor (FET)
C. metal-oxide semiconductor field-effect transistor (MOSFET)
D. unijunction transistor (UJ)
Show Answer
Scratch Pad
Discuss
Correct Answer: bipolar junction transistor (BJT)
8. In a TTL circuit, if an excessive number of load gate inputs are connected, ________.
Options
A. V
OH(min)
drops below V
OH
B. V
OH
drops below V
OH(min)
C. V
OH
exceeds V
OH(min)
D. V
OH
and V
OH(min)
are unaffected
Show Answer
Scratch Pad
Discuss
Correct Answer: V
OH
drops below V
OH(min)
9. PMOS and NMOS circuits are used largely in ________.
Options
A. MSI functions
B. LSI functions
C. diode functions
D. TTL functions
Show Answer
Scratch Pad
Discuss
Correct Answer: LSI functions
10. Which is not an output state for tristate logic?
Options
A. HIGH
B. LOW
C. High-Z
D. Low-Z
Show Answer
Scratch Pad
Discuss
Correct Answer: Low-Z
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