VLSI Design Questions and Answers | Online Quiz for Practice

46. The lower transistor of a totem-pole output is OFF when the gate output is

1. LOW.
2. over driven.
3. HIGH.
4. malfunctioning.

47. The lower transistor of a totem-pole output is saturated when the gate output is

1. malfunctioning.
2. over driven.
3. HIGH.
4. LOW.

48. The major advantage of CMOS logic circuits over TTL is

1. lower propagation delay.
2. much higher propagation delay.
3. very low power consumption.
4. the ability to produce several output voltage levels.

49. The major advantage of TTL logic circuits over CMOS is

1. more modern design.
2. very low power consumption.
3. lower propagation delay.
4. the ability to output higher voltages.

50. The maximum current for a HIGH output on a standard TTL gate is

1. -1 µA.
2. -10 mA.
3. -10 µA.
4. -400 µA.

51. The maximum current for a LOW output on a standard TTL gate is

1. 100 µA.
2. 16 mA.
3. 16 µA.
4. 40 mA.

52. The maximum input voltage recognized as a LOW by a TTL gate is

1. 0.0 V.
2. 0.4 V.
3. 2.4 V.
4. 0.8 V.

53. The maximum output voltage recognized as a LOW by a TTL gate is

1. 2.4 V.
2. 0.4 V. 3
3. 2.0 V.
4. 0.8 V.

54. The minimum input voltage recognized as a HIGH by a TTL gate is

1. 2.0 V.
2. 5.0 V.
3. 0.8 V.
4. 2.4 V.

55. The minimum output voltage recognized as a HIGH by a TTL gate is

1. 5.0 V.
2. 2.0 V.
3. 0.8 V.
4. 2.4 V.

56. The noise margin for a standard TTL gate is

1. 1.4 V.
2. 0.8 V.
3. 1.0 V.
4. 0.4 V.

57. The number of gates that can be connected to a single output without exceeding the current ratings of the gate is called

1. fan-out.
2. SSI.
3. dissipation.
4. propagation.

58. The original CMOS line of circuits is the

1. 74C00 series.
2. 74HCOO series.
3. 5400 series.
4. 4000 series.

59. The output current capability for a HIGH output condition is called a(n)

1. sink current.
2. fan-out.
3. source current.
4. exit current.

60. The output current for a LOW output is called a(n)

1. ground current.
2. fan-out.
3. exit current.
4. sink current.