Show cmos logic families, Electrical Engineering

Assignment Help:

Both DTL and TTL are based on the saturating BJT inverter. The transistor acts as a switch that connects or disconnects the collector and emitter. The switch is closed when sufficient base current is applied to saturate the transistor. While the BJT technologies have dominated during the 1970s, logic families based on MOSFET technology are nowmore widely used because of the advantages of fewer fabrication steps and generally lower power consumption. After PMOS and NMOS technologies, CMOS emerged as the dominant MOS technology and remains so today. Let us consider the simple MOSFET inverter with resistive load shown in Figure (a), quite similar in principle to the BJT inverter, although the circuit is rather impractical, as we shall see later. The load line for RD = 23 k and VDD = 7 V is shown along with the transistor I-V characteristics in Figure (b). On finding vout (= vDS) for different values of vin (= vGS), the voltage-transfer characteristic (vout versus vin) is plotted in Figure (c). By choosing the low range to be 0 to 3 V (i.e., less than the threshold voltage) and the high range to be 5 to 7 V, we can see that any input voltage in the low range gives an output of 7 V (high) and inputs in the high range give outputs in the low range. Thus, the circuit is seen to be an inverter.

1983_CMOS LOGIC FAMILIES.png


Related Discussions:- Show cmos logic families

Saturate the transistor with the base overdriven, For the circuit of Figure...

For the circuit of Figure, given that V CC = 5V, R C = 1k, β = 100, and the high range is 4 to 5 V, choose R B such that any high input will saturate the transistor with the ba

Logic circuits, : A farmer owns two barns; one north of a creek and the oth...

: A farmer owns two barns; one north of a creek and the other south of the creek. The farmer has a Cabbage, a Goat, and a Wolf. The Farmer needs to put each item in a barn every ni

Di disable interrupts instruction, DI Disable  Interrupts Instruction ...

DI Disable  Interrupts Instruction The interrupt enable  flip flop is reset and all the  interrupts of 8085 microprocessors  except  TRAP  are disabled . the  instruction  form

Mvi move immediate instruction , MVI Move Immediate  Instruction This...

MVI Move Immediate  Instruction This form  of the instruction is used to copy 8bit  data ( specified  in the  instruction )  directly  into the  register or memory  pointed by

Find the charge flowing and the number of electrons, Q. A current i(t) = 20...

Q. A current i(t) = 20 cos(2π × 60)t A fows through a wire. Find the charge flowing, and the number of electrons per second that are passing some point in the wire.

What is i/o mapping, What is I/O mapping? The assignment of addresses t...

What is I/O mapping? The assignment of addresses to various I/O devices in the memory chip is known as I/O mapping.

Charge carriers in semiconductors, Charge Carriers in Semiconductors ...

Charge Carriers in Semiconductors In a metal, the atoms are imbedded in a "sea" of free electrons, and these electrons can move as a group under the influence of an

Discuss the operation of the jk flip-flop, Q. Figure shows the master-slave...

Q. Figure shows the master-slave JKFF. Assuming that the output changes on the falling edge of the clock pulse (i.e., when the clock pulse goes from high to low), discuss the opera

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd