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

Define gain and phase responses, Define Gain and Phase Responses? Expre...

Define Gain and Phase Responses? Expressing H(e j? ) in polar form as:   H (e j? ) = G (?) e jφ(?) G(?) is the "gain" of the discrete-time system and  φ(?) is the "phas

Carthode ray oscilloscope, with a simple circuit,explain the construction o...

with a simple circuit,explain the construction of Direct Reading Probe of a cathode ray oscilloscope

Astable multivibrator circuit, how does this circuit work and what are th e...

how does this circuit work and what are th electrical components in it do?

Distribution transformer connection, why the primary bushing of 7970/13.8 d...

why the primary bushing of 7970/13.8 distribution transformer blown up when connected wye on a 13.8 kv source?

Explain the asynchronous up-down counters, Explain the Asynchronous Up-Down...

Explain the Asynchronous Up-Down Counters? In some applications a counter must be able to count both down and up and the circuit below is a 3-bit up-down counter. It counts do

Microprocessor, distingish between maximum and minimum modes of operations ...

distingish between maximum and minimum modes of operations of 8086 with timing diagrames

Evaluate the condition on the amplifier noise temperature, Alow-noise trans...

Alow-noise transducer is connected to an instrumentation system by a cable that generates thermal noise at room temperature. The information-bearing signal has a bandwidth of 6 kHz

FET operation, ON output plot of a JFET n-channel transistor if ID is close...

ON output plot of a JFET n-channel transistor if ID is close to IDSS does the value of VGS close to VP?

Determine the voltages, Question: a) For the circuit shown in figure ...

Question: a) For the circuit shown in figure (i) Determine the voltages across R1 and R2 and (ii) Determine the current which flows across R1 and R2. Both D1 and D2 a

Explain interrupt vector table, The interrupt vector table is always create...

The interrupt vector table is always created in the first 1K area of the memory. Justify the statement. While the CPU receives an interrupt type number start from the PIC, this

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