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Integrated Circuit Technologies - General Questions (3)

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Integrated Circuit Technologies - General Questions

17. 

Which logic family combines the advantages of CMOS and TTL?

A. BiCMOS
B. TTL/CMOS
C. ECL
D. TTL/MOS

Answer: Option A

Explanation:

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18. 

The nominal value of the dc supply voltage for TTL and CMOS is ________.

A. +3 V
B. +5 V
C. +9 V
D. +12 V

Answer: Option B

Explanation:

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19. 

A TTL NAND gate with IIL(max) of –1.6 mA per input drives eight TTL inputs. How much current does the drive output sink?

A. –12.8 mA
B. –8 mA
C. –1.6 mA
D. –25.6 mA

Answer: Option A

Explanation:

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20. 

An open-drain gate is the CMOS counterpart of ________.

A. an open-collector TTL gate
B. a tristate TTL gate
C. a bipolar junction transistor
D. an emitter-coupled logic gate

Answer: Option A

Explanation:

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21. 

The greater the propagation delay, the ________.

A. lower the maximum frequency
B. higher the maximum frequency
C. maximum frequency is unaffected
D. minimum frequency is unaffected

Answer: Option A

Explanation:

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22. 

In a TTL circuit, if an excessive number of load gate inputs are connected, ________.

A. VOH(min) drops below VOH
B. VOH drops below VOH(min)
C. VOH exceeds VOH(min)
D. VOH and VOH(min) are unaffected

Answer: Option B

Explanation:

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23. 

Which transistor element is used in CMOS logic?

A. FET
B. MOSFET
C. Bipolar
D. Unijunction

Answer: Option B

Explanation:

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24. 

For a CMOS gate, which is the best speed-power product?

A. 1.4 pJ
B. 1.6 pJ
C. 2.4 pJ
D. 3.3 pJ

Answer: Option A

Explanation:

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