Standard Logic Devices (SLD) problems
- 1. Delay times and current/voltage values remain constant regardless of temperature or other operating conditions for robust circuits like TTL.
Options- A. True
- B. False Discuss
Correct Answer: False
- 2. NMOS devices use MOSFETs to implement the full range of logic gates using the universal NAND gate.
Options- A. True
- B. False Discuss
Correct Answer: False
- 3. The TTL HIGH level source current is higher than the LOW level sinking current.
Options- A. True
- B. False Discuss
Correct Answer: False
- 4. Integrated-injection logic offers high component density and is easier to fabricate than TTL.
Options- A. True
- B. False Discuss
Correct Answer: True
- 5. A three-state output TTL can have three possible outputs: LOW, HIGH, or FLOATING.
Options- A. True
- B. False Discuss
Correct Answer: False
- 6. The output current capability of a single 7400 NAND gate when HIGH is called _____________.
Options- A. source current
- B. sink current
- C. IOH
- D. source current or IOH Discuss
Correct Answer: source current
- 7. Large-scale integration (LSI) ICs contain between ______ and _______ interconnected components.
Options- A. 15,000, 150,000
- B. 1,500, 15,000
- C. 180, 1,000
- D. 180, 1,500 Discuss
Correct Answer: 1,500, 15,000
- 8. In order to get a HIGH or a LOW output from an open-collector gate, an external _________ must be connected between +VCC and the collector.
Options- A. pull-down resistor
- B. pull-up resistor
- C. diode
- D. buffer Discuss
Correct Answer: pull-up resistor
- 9. One example of the use of a Schmitt trigger is as a(n) _____
Options- A. astable oscillator
- B. transition pulse generator
- C. pulse shaper
- D. buffer Discuss
Correct Answer: pulse shaper
- 10. An undefined state, neither high nor low, is called _________.
Options- A. don't care
- B. floating
- C. minimum state
- D. noise Discuss
Correct Answer: floating
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