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- Question
The nominal value of the dc supply voltage for TTL and CMOS is ________.
Options- A. +3 V
- B. +5 V
- C. +9 V
- D. +12 V
- Correct Answer
- +5 V
- 1. One output structure of a TTL gate is often referred to as a ________.
Options- A. totem-pole arrangement
- B. diode arrangement
- C. JBT arrangement
- D. base, emitter, collector arrangement Discuss
- 2. A certain gate draws 1.8 µA when its output is HIGH and 3.3 µA when its output is LOW. VCC is 5 V and the gate is operated on a 50% duty cycle. What is the average power dissipation (PD)?
Options- A. 2.55 µW
- B. 1.27 µW
- C. 12.75 µW
- D. 5 µW Discuss
- 3. 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
- 4. 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
- 5. 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
- 6. If ICCH is specified as 1.1 mA when VCC is 5 V and if the gate is in a static (noncharging) HIGH output state, the power dissipation (PD) of the gate is ________.
Options- A. 5.5 mW
- B. 5.5 W
- C. 5 mW
- D. 1.1 mW Discuss
- 7. Which is not a precaution for handling CMOS?
Options- A. Devices should be placed with pins down on a grounded surface, such as a metal plate.
- B. All tools, test equipment, and metal workbenches should be earth grounded.
- C. CMOS devices should not be inserted into sockets or PC boards with the power on.
- D. Wear wool clothes at all times. Discuss
- 8. Multiplexing of digital signals is usually required when:
Options- A. moving data internally within a microprocessor.
- B. moving data between memory and storage registers in a microprocessor.
- C. moving data over long distance transmission lines.
- D. moving data internally within a microprocessor or between memory and storage registers. Discuss
- 9. What must be done in the given figure in order to use two 7485 4-bit comparators to compare two 8-bit numbers?
Options- A. The P < Q, P = Q, and P > Q outputs of COMP A must be connected to the same outputs of COMP B.
- B. The P < Q, P = Q, and P > Q outputs of COMP A must be connected to the <, =, and > inputs of COMP B.
- C. The = input of COMP A must be connected to Vcc, and the < and > inputs must be connected to ground.
- D. The P < Q, P = Q, and P > Q outputs of COMP A must be connected to the <, =, and > inputs of COMP B, the = input of COMP A must be connected to Vcc, and the < and > inputs must be connected to ground. Discuss
- 10. A breadboard-circuit design using a BCD-to-decimal decoder has a problem wherein the operation of the system is erratic. The technician uses his scope to examine the waveforms throughout the system and doesn't really see any problems. While he's scratching his head, what helpful advice can you offer him as to what might be wrong and what to do to correct the problem?
Options- A. The decoder is thermally intermittent; replace it.
- B. There is probably a bad connection on the wire wrap protoboard; recheck the wiring.
- C. Glitches are probably the culprit; strobe the decoder.
- D. The decoder is thermally intermittent and must be replaced; or there is probably a bad connection on the wire wrap protoboard, and the wiring must be rechecked. Discuss
Integrated Circuit Technologies problems
Search Results
Correct Answer: totem-pole arrangement
Correct Answer: 12.75 µW
Correct Answer: Output capacitance of the load gates
Correct Answer: an open-collector TTL gate
Correct Answer: 400 µA
Correct Answer: 5.5 mW
Correct Answer: Wear wool clothes at all times.
Correct Answer: moving data over long distance transmission lines.
Correct Answer: The P < Q, P = Q, and P > Q outputs of COMP A must be connected to the <, =, and > inputs of COMP B, the = input of COMP A must be connected to Vcc, and the < and > inputs must be connected to ground.
Correct Answer: Glitches are probably the culprit; strobe the decoder.
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