Logic Families and Their Characteristics - General Questions (6)

Directions to Solve

Logic Families and Their Characteristics - General Questions

41.

What is the major advantage of ECL logic?

A.	What is the major advantage of ECL logic?
B.	wide range of operating voltage
C.	very low cost
D.	very high power

Answer: Option A

Explanation:

No answer description available for this question.

42.

Can a 74HCMOS logic gate directly connect to a 74ALSTTL gate?

A.	Yes
B.	No

Answer: Option A

Explanation:

No answer description available for this question.

43.

Assume that a particular IC has a supply voltage (V_cc) equal to +5 V and I_CCH = 10 mA and I_CCL = 23 mA. What is the power dissipation for the chip?

A.	50 mW
B.	82.5 mW
C.	115 mW
D.	165 mW

Answer: Option B

Explanation:

No answer description available for this question.

44.

What should be done to unused inputs on TTL gates?

A.	They should be left disconnected so as not to produce a load on any of the other circuits and to minimize power loading on the voltage source.
B.	All unused gates should be connected together and tied to V through a 1 k resistor.
C.	All unused inputs should be connected to an unused output; this will ensure compatible loading on both the unused inputs and unused outputs.
D.	Unused AND and NAND inputs should be tied to VCC through a 1 k resistor; unused OR and NOR inputs should be grounded.

Answer: Option D

Explanation:

No answer description available for this question.

45.

Special handling precautions should be taken when working with MOS devices. Which of the following statements is not one of these precautions?

A.	All test equipment should be grounded.
B.	MOS devices should have their leads shorted together for shipment and storage.
C.	Never remove or insert MOS devices with the power on.
D.	Workers handling MOS devices should not have grounding straps attached to their wrists.

Answer: Option D

Explanation:

No answer description available for this question.

46.

Why must CMOS devices be handled with care?

A.	so they donâ€™t get dirty
B.	because they break easily
C.	because they can be damaged by static electricity discharge

Answer: Option C

Explanation:

No answer description available for this question.

47.

Which of the following logic families has the shortest propagation delay?

A.	CMOS
B.	BiCMOS
C.	ECL
D.	74SXX

Answer: Option C

Explanation:

No answer description available for this question.

48.

What is unique about TTL devices such as the 74SXX?

A.	These devices use Schottky transistors and diodes to prevent them from going into saturation; this results in faster turn-on and turn-off times, which translates into higher frequency operation.
B.	The gate transistors are silicon (S), and the gates therefore have lower values of leakage current.
C.	The S denotes the fact that a single gate is present in the IC rather than the usual package of 2â€“6 gates.
D.	The S denotes a slow version of the device, which is a consequence of its higher power rating.

Answer: Option A

Explanation:

No answer description available for this question.

Logic Families and Their Characteristics - General Questions (6)

Logic Families and Their Characteristics - General Questions

Questions & Answers

Interviews

Jobs

Results

Admission

Admit Card

Answer Key