Standard Logic Devices (SLD) problems
- 1. 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
Correct Answer: represent MOSFET devices utilizing either P-channel or N-channel devices exclusively within a given gate
- 2. 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
Correct Answer: fanout
- 3. 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 Discuss
Correct Answer: source 400 µA of current to no more than 10 attached gates
- 4. 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
Correct Answer: cannot, together, if the outputs are in opposite states excessively high currents can damage one or both devices
- 5. 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
Correct Answer: sink, source current
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