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Digital Electronics - Logic Families and Their Characteristics

Exercise : Logic Families and Their Characteristics - General Questions
11.
What is the difference between the 54XX and 74XX series of TTL logic gates?
54XX is faster.
54XX is slower.
54XX has a wider power supply and expanded temperature range.
54XX has a narrower power supply and contracted temperature range.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
12.
An open collector output can ________ current, but it cannot ________.
sink, source current
source, sink current
sink, source voltage
source, sink voltage
Answer: Option
Explanation:
No answer description is available. Let's discuss.
13.
Why is a decoupling capacitor needed for TTL ICs and where should it be connected?
to block dc, connect to input pins
to reduce noise, connect to input pins
to reduce the effects of noise, connect between power supply and ground
Answer: Option
Explanation:
No answer description is available. Let's discuss.
14.
Using the schematic diagram of a TTL NAND gate, determine the state of each transistor (ON or OFF) when all inputs are high.
Q1-ON, Q2-OFF, Q3-ON, Q4-OFF
Q1-ON, Q2-ON, Q3-OFF, Q4-OFF
Q1-OFF, Q2-OFF, Q3-ON, Q4-ON
Q1-OFF, Q2-ON, Q3-OFF, Q4-ON
Answer: Option
Explanation:
No answer description is available. Let's discuss.
15.
If all inputs to a TTL NAND gate are low, what is the ON, OFF condition of each transistor in the circuit?
Q1-ON, Q2-OFF, Q3-ON, Q4-OFF
Q1-ON, Q2-ON, Q3-OFF, Q4-OFF
Q1-OFF, Q2-OFF, Q3-ON, Q4-ON
Q1-OFF, Q2-ON, Q3-OFF, Q4-ON
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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