Electronics-Standard Logic Devices (SLD)
Electronics-Standard Logic Devices (SLD)
1. A digital logic device used as a buffer should have what input/output characteristics?
- high input impedance and high output impedance
- low input impedance and high output impedance
- low input impedance and low output impedance
- high input impedance and low output impedance
3. The range of a valid LOW input is:
- 0.0 V to 0.4 V
- 0.4 V to 0.8 V
- 0.4 V to 1.8 V
- 0.4 V to 2.4 V
4. When an IC has two rows of parallel connecting pins, the device is referred to as:
- a QFP
- a DIP
- a phase splitter
- CMOS
5. Which digital IC package type makes the most efficient use of printed circuit board space?
- SMT
- TO can
- flat pack
- DIP
6. The problem of interfacing IC logic families that have different supply voltages (VCCs) can be solved by using a:
- level-shifter
- tri-state shifter
- translator
- level-shifter or translator
7. Ten TTL loads per TTL driver is known as:
- noise immunity
- power dissipation
- fanout
- propagation delay
8. Which of the following summarizes the important features of emitter-coupled logic (ECL)?
- negative voltage operation, high speed, and high power consumption
- good noise immunity, negative logic, high frequency capability, low power dissipation, and short propagation time
- slow propagation time, high frequency response, low power consumption, and high output voltage swings
- poor noise immunity, positive supply voltage operation, good low-frequency operation, and low power
9. What quantities must be compatible when interfacing two different logic families?
- only the currents
- both the voltages and the currents
- only the voltages
- both the power dissipation and the impedance
10. CMOS logic is probably the best all-around circuitry because of its:
- packing density
- low power consumption
- very high noise immunity
- low power consumption and very high noise immunity