Logic Families and Their Characteristics - General Questions

Directions to Solve

Logic Families and Their Characteristics - General Questions

1.

The TTL HIGH level source current is higher than the LOW level sinking current.

A.	True
B.	False

Answer: Option B

Explanation:

No answer description available for this question.

2.

What should be done with unused inputs to a TTL NAND gate?

A.	let them float
B.	tie them LOW
C.	tie them HIGH

Answer: Option C

Explanation:

No answer description available for this question.

3.

How does the 4000 series of CMOS logic compare in terms of speed and power dissipation to the standard family of TTL logic?

A.	more power dissipation and slower speed
B.	more power dissipation and faster speed
C.	less power dissipation and faster speed
D.	less power dissipation and slower speed

Answer: Option D

Explanation:

No answer description available for this question.

4.

The problem of the V_OH(min) of a TTL IC being too low to drive a CMOS circuit and meet the CMOS requirement of V_IH(min) is usually easily overcome by:

A.	adding a fixed voltage-divider bias resistive network at the output of the TTL device
B.	avoiding this condition and only using TTL to drive TTL
C.	adding an external pull-down resistor to ground
D.	adding an external pull-up resistor to VCC

Answer: Option D

Explanation:

No answer description available for this question.

5.

How is the speed–power product of a logic family determined?

A.	The propagation delay in s is multiplied by the power dissipation in mW.
B.	The propagation delay in ms is multiplied by the power dissipation in W.
C.	The propagation delay in ns is multiplied by the power dissipation in mW.
D.	The propagation delay in ns is multiplied by the power dissipation in W.

Answer: Option C

Explanation:

No answer description available for this question.

6.

Which logic family is characterized by a multiemitter transistor on the input?

A.	ECL
B.	CMOS
C.	TTL
D.	None of the above

Answer: Option C

Explanation:

No answer description available for this question.

7.

How can ECL have both a NOR and an OR output?

A.	ECL does not have this feature.
B.	They are simply the inverse of each other.

Answer: Option B

Explanation:

No answer description available for this question.

8.

What is the standard TTL noise margin?

A.	5.0 V
B.	0.0 V
C.	0.8 V
D.	0.4 V

Answer: Option D

Explanation:

No answer description available for this question.

1
2
3
4
5
6