chris/Extra-Study
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases 1 Activity
Extra-Study/pages/E6C.md
Chris ce979dddb4 Initial checkin
2025-05-01 15:49:18 -05:00

3.1 KiB
Raw Permalink Blame History

E6C Digital ICs: families of digital ICs; gates; programmable logic devices

  • E6C01 (A) What is the function of hysteresis in a comparator? #card
    • A. To prevent input noise from causing unstable output signals
    • B. To allow the comparator to be used with AC input signals
    • C. To cause the output to continually change states
    • D. To increase the sensitivity
  • E6C02 (B) What happens when the level of a comparator’s input signal crosses the threshold voltage? #card
    • A. The IC input can be damaged
    • B. The comparator changes its output state
    • C. The reference level appears at the output
    • D. The feedback loop becomes unstable
  • E6C03 (A) What is tri-state logic? #card
    • A. Logic devices with 0, 1, and high-impedance output states
    • B. Logic devices that utilize ternary math
    • C. Logic with three output impedances which can be selected to better match the load impedance
    • D. A counter with eight states
  • E6C04 (C) Which of the following is an advantage of BiCMOS logic? #card
    • A. Its simplicity results in much less expensive devices than standard CMOS
    • B. It is immune to electrostatic damage
    • C. It has the high input impedance of CMOS and the low output impedance of bipolar transistors
    • D. All these choices are correct
  • E6C05 (D) Which of the following digital logic families has the lowest power consumption? #card
    • A. Schottky TTL
    • B. ECL
    • C. NMOS
    • D. CMOS
  • E6C06 (C) Why do CMOS digital integrated circuits have high immunity to noise on the input signal or power supply? #card
    • A. Large bypass capacitance is inherent
    • B. The input switching threshold is about twice the power supply voltage
    • C. The input switching threshold is about half the power supply voltage
    • D. Bandwidth is very limited
  • E6C07 (B) What best describes a pull-up or pull-down resistor? #card
    • A. A resistor in a keying circuit used to reduce key clicks
    • B. A resistor connected to the positive or negative supply used to establish a voltage when an input or output is an open circuit
    • C. A resistor that ensures that an oscillator frequency does not drift
    • D. A resistor connected to an op-amp output that prevents signals from exceeding the power supply voltage
  • E6C08 (B) In Figure E6-3, which is the schematic symbol for a NAND gate? #card image.png
  • E6C09 (B) What is used to design the configuration of a field-programmable gate array (FPGA)? #card
    • A. Karnaugh maps
    • B. Hardware description language (HDL)
    • C. An auto-router
    • D. Machine and assembly language
  • E6C10 (D) In Figure E6-3, which is the schematic symbol for a NOR gate? #card image.png
  • E6C11 (C) In Figure E6-3, which is the schematic symbol for the NOT operation (inversion)? #card image.png