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- Question
When the output of a standard TTL gate is HIGH, it can ___________________.
Options- A. sink 16 mA of current from the attached input gates
- B. source 400 µA of current to no more than 10 attached gates
- C. source 16 mA of current to no more than 10 attached gates
- D. sink a maximum of 400 µA from no more than 10 load gates
- Correct Answer
- source 400 µA of current to no more than 10 attached gates
- 1. The number of inputs that a gate output can drive without possible logic errors is the _______.
Options- A. propagation delay
- B. noise margin
- C. speed-power product
- D. fanout Discuss
- 2. PMOS and NMOS ____________________________.
Options- A. represent MOSFET devices utilizing either P-channel or N-channel devices exclusively within a given gate
- B. are enhancement type CMOS devices used to produce a series of high-speed logic known as 74HC
- C. represent positive and negative MOS type devices that can be operated from differential power supplies and are compatible with operational amplifiers
- D. none of the above Discuss
- 3. An undefined state, neither high nor low, is called _________.
Options- A. don't care
- B. floating
- C. minimum state
- D. noise Discuss
- 4. 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
- 5. 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
- 6. Totem pole outputs _________ be connected __________ because ____________.
Options- A. can, in parallel, sometimes higher current is required
- B. cannot, together, if the outputs are in opposite states excessively high currents can damage one or both devices
- C. should, in series, certain applications may require higher output voltage
- D. can, together, together they can handle larger load currents and higher output voltages Discuss
- 7. An open collector output can ________ current, but it cannot ___________________.
Options- A. sink, source current
- B. source, sink current
- C. sink, source voltage
- D. source, sink voltage Discuss
- 8. The ideal test equipment to use for locating shorts in digital circuitry is the ________ and _______.
Options- A. logic probe, clip
- B. logic pulser, logic probe
- C. current tracer, logic pulser
- D. current tracer, logic clip Discuss
- 9. The control of digital circuits is usually achieved with _________.
Options- A. random pulses
- B. clock signals
- C. sophisticated gating
- D. selected frequencies Discuss
- 10. Erratic or unexplained digital circuit activity is often due to _________.
Options- A. a glitch
- B. a random pulse
- C. clock frequency changes
- D. a change in slew rate Discuss
Standard Logic Devices (SLD) problems
Search Results
Correct Answer: fanout
Correct Answer: represent MOSFET devices utilizing either P-channel or N-channel devices exclusively within a given gate
Correct Answer: floating
Correct Answer: pulse shaper
Correct Answer: pull-up resistor
Correct Answer: cannot, together, if the outputs are in opposite states excessively high currents can damage one or both devices
Correct Answer: sink, source current
Correct Answer: current tracer, logic pulser
Correct Answer: clock signals
Correct Answer: clock frequency changes
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