Integrated Circuit Technologies MCQs

Question 1

A TTL NAND gate with IIH(max) of 40 A per input drives ten TTL inputs. How much current does the drive output source?

Accepted Answer

400 A

Answer

40 A

Answer

200 A

Answer

800 A

Question 2

A certain gate draws 1.8 A when its output is HIGH and 3.3 µA when its output is LOW. VCC is 5 V and the gate is operated on a 50% duty cycle. What is the average power dissipation (PD)?

Accepted Answer

12.75 W

Answer

2.55 W

Answer

1.27 W

Answer

5 W

Question 3

PMOS and NMOS circuits are used largely in ________.

Accepted Answer

LSI functions

Answer

MSI functions

Answer

diode functions

Answer

TTL functions

Question 4

If ICCH is specified as 1.1 mA when VCC is 5 V and if the gate is in a static (noncharging) HIGH output state, the power dissipation (PD) of the gate is ________.

Accepted Answer

5.5 mW

Answer

5.5 W

Answer

5 mW

Answer

1.1 mW

Question 5

Which is not a precaution for handling CMOS?

Accepted Answer

Wear wool clothes at all times.

Answer

Devices should be placed with pins down on a grounded surface, such as a metal plate.

Answer

All tools, test equipment, and metal workbenches should be earth grounded.

Answer

CMOS devices should not be inserted into sockets or PC boards with the power on.

Question 6

Which factor does not affect CMOS loading?

Accepted Answer

Output capacitance of the load gates

Answer

Charging time associated with the output resistance of the driving gate

Answer

Discharging time associated with the output resistance of the driving gate

Answer

Input capacitance of the load gates

Question 7

Which is not part of emitter-coupled logic (ECL)?

Accepted Answer

Totem-pole circuit

Answer

Differential amplifier

Answer

Bias circuit

Answer

Emitter-follower circuit