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Digital Electronics - Integrated-Circuit Logic Families

Exercise : Integrated-Circuit Logic Families - General Questions
6.
Which of the following summarizes the important features of ECL?
Low noise margin, low output voltage swing, negative voltage operation, fast, and high power consumption
Good noise immunity, negative logic, high frequency capability, low power dissipation, and short propagation time
Slow propagation time, high frequency response, low power consumption, and high output voltage swings
Poor noise immunity, positive supply voltage operation, good low frequency operation, and low power
Answer: Option
Explanation:
No answer description is available. Let's discuss.
7.
What must be done to interface TTL to CMOS?
A dropping resistor must be used on the CMOS 12 V supply to reduce it to 5 V for the TTL.
As long as the CMOS supply voltage is 5 V, they can be interfaced; however, the fan-out of the TTL is limited to five CMOS gates.
A 5 V Zener diode must be placed across the inputs of the TTL gates in order to protect them from the higher output voltages of the CMOS gates.
A pull-up resistor must be used between the TTL output-CMOS input node and Vcc; the value of RP will depend on the number of CMOS gates connected to the node.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
8.
What causes low-power Schottky TTL to use less power than the 74XX series TTL?
The Schottky-clamped transistor
Nothing. The 74XX series uses less power.
A larger value resistor
Using NAND gates
Answer: Option
Explanation:
No answer description is available. Let's discuss.
9.
What are the major differences between the 5400 and 7400 series of ICs?
The 5400 series are military grade and require tighter supply voltages and temperatures.
The 5400 series are military grade and allow for a wider range of supply voltages and temperatures.
The 7400 series are an improvement over the original 5400s.
The 7400 series was originally developed by Texas Instruments. The 5400 series was brought out by National Semiconductors after TI's patents expired, as a second supply source.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
10.
Which of the following statements apply to CMOS devices?
The devices should not be inserted into circuits with the power on.
All tools, test equipment, and metal workbenches should be tied to earth ground.
The devices should be stored and shipped in antistatic tubes or conductive foam.
All of the above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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