Integrated Circuit Technologies problems
- 1. For a CMOS gate, which is the best speed-power product?
Options- A. 1.4 pJ
- B. 1.6 pJ
- C. 2.4 pJ
- D. 3.3 pJ Discuss
Correct Answer: 1.4 pJ
- 2. An open-collector output requires ________.
Options- A. a pull-down resistor
- B. a pull-up resistor
- C. no output resistor
- D. an output resistor Discuss
Correct Answer: a pull-up resistor
- 3. TTL is alive and well, particularly in ________.
Options- A. industrial applications
- B. educational applications
- C. military applications
- D. commercial applications Discuss
Correct Answer: educational applications
- 4. The active switching element used in all TTL circuits is the ________.
Options- A. bipolar junction transistor (BJT)
- B. field-effect transistor (FET)
- C. metal-oxide semiconductor field-effect transistor (MOSFET)
- D. unijunction transistor (UJ) Discuss
Correct Answer: bipolar junction transistor (BJT)
- 5. In a TTL circuit, if an excessive number of load gate inputs are connected, ________.
Options- A. VOH(min) drops below VOH
- B. VOH drops below VOH(min)
- C. VOH exceeds VOH(min)
- D. VOH and VOH(min) are unaffected Discuss
Correct Answer: VOH drops below VOH(min)
- 6. PMOS and NMOS circuits are used largely in ________.
Options- A. MSI functions
- B. LSI functions
- C. diode functions
- D. TTL functions Discuss
Correct Answer: LSI functions
- 7. Which is not an output state for tristate logic?
Options- A. HIGH
- B. LOW
- C. High-Z
- D. Low-Z Discuss
Correct Answer: Low-Z
- 8. A TTL NAND gate with IIH(max) of 40 µA per input drives ten TTL inputs. How much current does the drive output source?
Options- A. 40 µA
- B. 200 µA
- C. 400 µA
- D. 800 µA Discuss
Correct Answer: 400 µA
- 9. An open-drain gate is the CMOS counterpart of ________.
Options- A. an open-collector TTL gate
- B. a tristate TTL gate
- C. a bipolar junction transistor
- D. an emitter-coupled logic gate Discuss
Correct Answer: an open-collector TTL gate
- 10. Which factor does not affect CMOS loading?
Options- A. Charging time associated with the output resistance of the driving gate
- B. Discharging time associated with the output resistance of the driving gate
- C. Output capacitance of the load gates
- D. Input capacitance of the load gates Discuss
Correct Answer: Output capacitance of the load gates
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