Integrated-Circuit Logic Families - General Questions (2)

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Integrated-Circuit Logic Families - General Questions

What type of circuit is shown below and which statement best describes its operation?

mcq8_1016_1

A.	It is a two-input CMOS AND gate with open drain.
B.	It is a two-input CMOS buffer with tristate output.
C.	It is a CMOS inverter with tristate output.
D.	It is a hybrid TTL-CMOS inverter with FET totem-pole output.

Answer: Option C

Explanation:

No answer description available for this question.

10.

Whenever a totem-pole TTL output goes from LOW to HIGH, a high-amplitude current spike is drawn from the V_cc supply. How is this effect corrected to a digital circuit?

A.	By connecting a radio-frequency capacitor from Vcc to ground.
B.	By using a switching power supply
C.	By connecting a capacitor from Vout to ground
D.	By connecting a large resistor from Vcc to Vout

Answer: Option A

Explanation:

No answer description available for this question.

11.

What type of logic circuit is shown below and what logic function is being performed?

mcq8_1015_1

A.	It is an NMOS AND gate.
B.	It is a CMOS AND gate.
C.	It is a CMOS NOR gate.
D.	It is a PMOS NAND gate.

Answer: Option C

Explanation:

No answer description available for this question.

12.

Refer the given figure. Which of the following describes the operation of the circuit?

mcq8_1009_1 (1)

A.	A LOW input turns Q1 and Q3 on; Q2 and Q4 are off.
B.	A LOW input turns Q1 and Q4 off; Q2 and Q3 are on.
C.	A HIGH input turns Q1, Q2, and Q3 off, and Q4 is on.
D.	A HIGH input turns Q1, Q2, and Q4 on; Q3 is off.

Answer: Option C

Explanation:

No answer description available for this question.

13.

Refer to the given figure. What type of output arrangement is being used for the output?

mcq8_1009_1

A.	Complementary-symmetry
B.	Push-pull
C.	Quasi push-pull
D.	Totem-pole

Answer: Option D

Explanation:

No answer description available for this question.

14.

Which of the logic families listed below allows the highest operating frequency?

A.	74AS
B.	ECL
C.	HCMOS
D.	54S

Answer: Option B

Explanation:

No answer description available for this question.

15.

A "floating" TTL input may be defined as:

A.	unused input that is tied to Vcc through a 1 k resistor.
B.	unused input that is tied to used inputs.
C.	unused input that is tied to the ground.
D.	unused input that is not connected.

Answer: Option D

Explanation:

No answer description available for this question.

16.

Which of the following logic families has the highest noise margin?

A.	TTL
B.	LS TTL
C.	CMOS
D.	HCMOS

Answer: Option D

Explanation:

No answer description available for this question.

Integrated-Circuit Logic Families - General Questions (2)

Integrated-Circuit Logic Families - General Questions

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