Logic Families and Their Characteristics Questions

• The time needed for an output to change from the result of an input change is known as:
• Why are the maximum value of VOL and the minimum value of VOH used to determine the noise margin rather than the typical values for these parameters?
• The term buffer/driver signifies the ability to provide low output currents to drive light loads.
• Using the schematic diagram of a TTL NAND gate, determine the state of each transistor (ON or OFF) when all inputs are high.
• When is a level-shifter circuit needed in interfacing logic?
• What is the advantage of using low-power Schottky (LS) over standard TTL logic?
• How can ECL have both a NOR and an OR output?
• How does the 4000 series of CMOS logic compare in terms of speed and power dissipation to the standard family of TTL logic?
• The high input impedance of MOSFETs:
• What is the difference between the 54XX and 74XX series of TTL logic gates?
• Special handling precautions should be taken when working with MOS devices. Which of the following statements is not one of these precautions?
• Can a 74HCMOS logic gate directly connect to a 74ALSTTL gate?
• How is the speed–power product of a logic family determined?
• As a general rule, the lower the value of the speed–power product, the better the device because of its:
• Which logic family is characterized by a multiemitter transistor on the input?
• From the following specifications determine the fan-out for the logic family.
• What is unique about TTL devices such as the 74SXX?
• Why must CMOS devices be handled with care?
• Totem-pole outputs ________ be connected ________ because ________.
• A TTL totem-pole circuit is designed so that the output transistors: