CMOS Characteristics

Question 1

What does CMOS stand for?

Answer 1

complementary metal oxide semiconductor

Question 2

how much power does the CMOS use while standing by?

Answer 2

none

Question 3

What are the four major CMOS families?

Answer 3

HC, HCT, AC, ACT

Question 4

What’s so special about HCT and ACT?

Answer 4

designed with TTL compatability

Question 5

Which CMOS family is fastest?

Answer 5

AC/ACT

Question 6

What is the dominant technology used in higher levels of integration?

Answer 6

CMOS technology

Question 7

What are MOS transistors?

Answer 7

field effect transistors( FETs)

Question 8

When gate voltage for an MOS transistor is off, what happens?

Answer 8

the drain-to-source resistance of an MOS transistor that is off is very high

resistance is low when voltage is at 3 volts

Question 9

Elementary CMOS circuit inverter, talk about it

Answer 9

when V.in is at high Voltage H, the n channel device is on and the p channel device is off. Vice versa with L. For these reasons, a CMOS circuit has low standby power requirements

Question 10

CMOS gates have zero input current and large dc fanout

Answer 10

repeat

Question 11

CMOS inverters are designed to deliver the sam e output current levels at high and low output voltages

Answer 11

repeat

Question 12

Speed of transistions is limited by what?

Answer 12

circuit capacitance