Question 1

An IC is rated IOH(max) = 600 µA and IOL(max) = 60 mA. Express the IC's fan- out in terms of standard TTL unit loads (UL).

Accepted Answer

A)  HIGH state = 8 UL, LOW state = 10 UL 
B)  HIGH state = 12 UL, LOW state = 18 UL 
C)  HIGH state = 2.5 UL, LOW state = 1.5 UL 
D)  HIGH state = 15 UL, LOW state = 37.5 UL 
A)  HIGH state = 8 UL, LOW state = 10 UL 
B)  HIGH state = 12 UL, LOW state = 18 UL 
C)  HIGH state = 2.5 UL, LOW state = 1.5 UL 
D)  HIGH state = 15 UL, LOW state = 37.5 UL

Question 2

Suppose the data sheet for a standard TTL four NOR gate IC lists values of: Icch = 6 ma, Iccl = 16 ma, and Vcc = 5 v. What is the average power dissipated by each gate?

Accepted Answer

A)  50 mw 
B)  55 mw 
C)  13.75 mw 
D)  12.50 mw 
A)  50 mw 
B)  55 mw 
C)  13.75 mw 
D)  12.50 mw

Question 3

A TTL data sheet lists the following values for the 74LS190 synchronous counter: IOH(max) = - 0.4 mA, IOL(max) = 8 mA, IIH(max) = 60 µA, and IIL(max) = - 1.2 mA. Determine the same series

Accepted Answer

A)  2 
B)  4 
C)  6 
D)  5 
A)  2 
B)  4 
C)  6 
D)  5

Question 4

When interfacing components in a circuit, "transmission line" issues can be avoided if the components are placed no more than ______from each other.

Accepted Answer

A)  1.51 feet 
B)  9 inches 
C)  4 feet 
D)  4 inches 
A)  1.51 feet 
B)  9 inches 
C)  4 feet 
D)  4 inches

Question 5

The maximum number of inputs an output can drive reliably is called fan- out.

Accepted Answer

A) True 
 B)False

Question 6

For conduction, a P- channel MOSFET switch would require a____ VDD and a ____ VGS.

Accepted Answer

A)  negative, positive 
B)  positive, positive 
C)  negative, negative 
D)  positive, negative 
A)  negative, positive 
B)  positive, positive 
C)  negative, negative 
D)  positive, negative

Question 7

The dc noise margins calculated using the proper values from a standard TTL data sheet are the worst- case margins. The typical dc noise margins are usually somewhat higher.

Accepted Answer

A) True 
 B)False

Question 8

The main difference between an SN7402 and an SN5402 would be:

Accepted Answer

A)  the SN7402 contains NOR gates where the SN5402 contains NAND gates. 
B)  the SN5402 contains NOR gates where the SN7402 contains NAND gates. 
C)  the SN5402 is able to operate over a wider range of temperatures and power supply voltages. 
D)  the SN7402 is able to operate over a wider range of temperatures and power supply voltages. 
A)  the SN7402 contains NOR gates where the SN5402 contains NAND gates. 
B)  the SN5402 contains NOR gates where the SN7402 contains NAND gates. 
C)  the SN5402 is able to operate over a wider range of temperatures and power supply voltages. 
D)  the SN7402 is able to operate over a wider range of temperatures and power supply voltages.

Question 9

Determine the output state for a TTL NOR gate that has all of its inputs floating.

Accepted Answer

A)  HIGH 
B)  LOW 
C)  Indeterminate 
A)  HIGH 
B)  LOW 
C)  Indeterminate

Question 10

-Refer to Table 8- 1. Which of the series listed would be best suited for operating in a portable battery powered circuit at 100 MHz?

Accepted Answer

A)  74S 
B)  74F 
C)  74AS 
D)  74ALS 
A)  74S 
B)  74F 
C)  74AS 
D)  74ALS

Question 11

The DC high- state noise margin is the difference between the:

Accepted Answer

A)  highest possible HIGH output and the minimum input voltage required for a HIGH. 
B)  lowest possible HIGH output and the maximum input voltage required for a HIGH. 
C)  highest possible HIGH output and the maximum input voltage required for a HIGH. 
D)  lowest possible HIGH output and the minimum input voltage required for a HIGH. 
A)  highest possible HIGH output and the minimum input voltage required for a HIGH. 
B)  lowest possible HIGH output and the maximum input voltage required for a HIGH. 
C)  highest possible HIGH output and the maximum input voltage required for a HIGH. 
D)  lowest possible HIGH output and the minimum input voltage required for a HIGH.

Question 12

Devices using single- ended interfaces have better noise immunity than those using differential signaling.

Accepted Answer

A) True 
 B)False

Question 13

A device used to compare an analog voltage to a reference value, for the purpose of generating a digital signal is called a(n):

Accepted Answer

A)  analog limiter. 
B)  step inverter. 
C)  digital converter. 
D)  comparator. 
A)  analog limiter. 
B)  step inverter. 
C)  digital converter. 
D)  comparator.

Question 14

A certain TTL series has a fan- out of 20. This means the series is capable of driving a total of 20 input devices of any series.

Accepted Answer

A) True 
 B)False

Question 15

Which of the following MOST accurately lists the advantages of MOS ICs over TTL ICs?

Accepted Answer

A)  Occupy more space, are less expensive to manufacture, are bipolar devices, and normally do not use IC resistor elements 
B)  Occupy less space, operate faster, are less expensive to manufacture, and consume less power 
C)  Occupy less space, operate faster, and are easier to fabricate 
D)  Occupy less space, require fewer external connections, are unipolar devices, and normally do not use IC resistor elements 
A)  Occupy more space, are less expensive to manufacture, are bipolar devices, and normally do not use IC resistor elements 
B)  Occupy less space, operate faster, are less expensive to manufacture, and consume less power 
C)  Occupy less space, operate faster, and are easier to fabricate 
D)  Occupy less space, require fewer external connections, are unipolar devices, and normally do not use IC resistor elements

Question 16

The primary advantage of ECL over TTL is that ECL circuits have:

Accepted Answer

A)  very short propagation delay times. 
B)  low noise margins. 
C)  constant current drain. 
D)  Both A and C 
A)  very short propagation delay times. 
B)  low noise margins. 
C)  constant current drain. 
D)  Both A and C

Question 17

Integrated circuits are best suited for information processing applications.

Accepted Answer

A) True 
 B)False

Question 18

Tri- state outputs include ______state in which logic low is at ground potential.

Accepted Answer

The answer of Tri- state outputs include ______state in which...

Question 19

P- MOS and N- MOS circuits are usually identical with the exception of the voltage polarities.

Accepted Answer

A) True 
 B)False

Question 20

The voltage measured at an unused TTL input typically falls in the range of:

Accepted Answer

A)  0.8 to 5 V 
B)  1.4 to 1.8 V 
C)  0 to 5 V 
D)  0 to 1.8 V 
A)  0.8 to 5 V 
B)  1.4 to 1.8 V 
C)  0 to 5 V 
D)  0 to 1.8 V

An IC is rated I_OH(max)= 600 µA and I_OL(max)= 60 mA. Express the IC's fan- out in terms of standard TTL unit loads (UL).

Suppose the data sheet for a standard TTL four NOR gate IC lists values of: I_cch= 6 ma, I_ccl= 16 ma, and V_cc= 5 v. What is the average power dissipated by each gate?

A TTL data sheet lists the following values for the 74LS190 synchronous counter: I_OH(max)= - 0.4 mA, I_OL(max)= 8 mA, I_IH(max)= 60 µA, and I_IL(max)= - 1.2 mA. Determine the same series

When interfacing components in a circuit, "transmission line" issues can be avoided if the components are placed no more than ______from each other.

The maximum number of inputs an output can drive reliably is called fan- out.

For conduction, a P- channel MOSFET switch would require a____ V_DDand a ____ V_GS.

The dc noise margins calculated using the proper values from a standard TTL data sheet are the worst- case margins. The typical dc noise margins are usually somewhat higher.

The main difference between an SN7402 and an SN5402 would be:

Determine the output state for a TTL NOR gate that has all of its inputs floating.

-Refer to Table 8- 1. Which of the series listed would be best suited for operating in a portable battery powered circuit at 100 MHz?

The DC high- state noise margin is the difference between the:

Devices using single- ended interfaces have better noise immunity than those using differential signaling.

A device used to compare an analog voltage to a reference value, for the purpose of generating a digital signal is called a(n):

A certain TTL series has a fan- out of 20. This means the series is capable of driving a total of 20 input devices of any series.

Which of the following MOST accurately lists the advantages of MOS ICs over TTL ICs?

The primary advantage of ECL over TTL is that ECL circuits have:

Integrated circuits are best suited for information processing applications.

Tri- state outputs include ______state in which logic low is at ground potential.

P- MOS and N- MOS circuits are usually identical with the exception of the voltage polarities.

The voltage measured at an unused TTL input typically falls in the range of:

Introductory Concepts

Number Systems and Codes

Describing Logic Circuits

Combinational Logic Circuits

Flip-Flops and Related Devices

Digital Arithmetic: Operations and Circuits

Counters and Registers

MSI Logic Circuits

Digital System Projects Using HDL

Interfacing With the Analog World

Memory Devices

Programmable Logic Device Architectures

Filters

Exam 8: Integrated-Circuit Logic Families

An IC is rated IOH(max) = 600 µA and IOL(max) = 60 mA. Express the IC's fan- out in terms of standard TTL unit loads (UL).

Suppose the data sheet for a standard TTL four NOR gate IC lists values of: Icch = 6 ma, Iccl = 16 ma, and Vcc = 5 v. What is the average power dissipated by each gate?

A TTL data sheet lists the following values for the 74LS190 synchronous counter: IOH(max) = - 0.4 mA, IOL(max) = 8 mA, IIH(max) = 60 µA, and IIL(max) = - 1.2 mA. Determine the same series

When interfacing components in a circuit, "transmission line" issues can be avoided if the components are placed no more than ______from each other.

The maximum number of inputs an output can drive reliably is called fan- out.

For conduction, a P- channel MOSFET switch would require a____ VDD and a ____ VGS.

The dc noise margins calculated using the proper values from a standard TTL data sheet are the worst- case margins. The typical dc noise margins are usually somewhat higher.

The main difference between an SN7402 and an SN5402 would be:

Determine the output state for a TTL NOR gate that has all of its inputs floating.

-Refer to Table 8- 1. Which of the series listed would be best suited for operating in a portable battery powered circuit at 100 MHz?

The DC high- state noise margin is the difference between the:

Devices using single- ended interfaces have better noise immunity than those using differential signaling.

A device used to compare an analog voltage to a reference value, for the purpose of generating a digital signal is called a(n):

A certain TTL series has a fan- out of 20. This means the series is capable of driving a total of 20 input devices of any series.

Which of the following MOST accurately lists the advantages of MOS ICs over TTL ICs?

The primary advantage of ECL over TTL is that ECL circuits have:

Integrated circuits are best suited for information processing applications.

Tri- state outputs include ______state in which logic low is at ground potential.

P- MOS and N- MOS circuits are usually identical with the exception of the voltage polarities.

The voltage measured at an unused TTL input typically falls in the range of:

Introductory Concepts

Number Systems and Codes

Describing Logic Circuits

Combinational Logic Circuits

Flip-Flops and Related Devices

Digital Arithmetic: Operations and Circuits

Counters and Registers

MSI Logic Circuits

Digital System Projects Using HDL

Interfacing With the Analog World

Memory Devices

Programmable Logic Device Architectures

Filters

An IC is rated I_OH(max)= 600 µA and I_OL(max)= 60 mA. Express the IC's fan- out in terms of standard TTL unit loads (UL).

Suppose the data sheet for a standard TTL four NOR gate IC lists values of: I_cch= 6 ma, I_ccl= 16 ma, and V_cc= 5 v. What is the average power dissipated by each gate?

A TTL data sheet lists the following values for the 74LS190 synchronous counter: I_OH(max)= - 0.4 mA, I_OL(max)= 8 mA, I_IH(max)= 60 µA, and I_IL(max)= - 1.2 mA. Determine the same series

For conduction, a P- channel MOSFET switch would require a____ V_DDand a ____ V_GS.