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Lower power dissipation (except at very very high switching rates, as almost all the power dissipated by CMOS is during switching).
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Why is the sink current higher than the source current?
In what?this is true in TTL logic ICs because the pulldown drive transistor is strong and the pullup drive transistor is weakthis is false in CMOS logic ICs because both pulldown and pullup transistors are identicalin other devices it varies
What is a typical advantage of CMOS over TTL?
TTL stands for Transistor-Transistor-Logic. N-MOS is a type of a metal oxide semiconductor technology. TTL is faster, but generally uses more power. MOS based devices are slower, they and they use less power. Speed is an issue when dealing with high speed data processing.
What is the major difference an NPN transistor and a PNP transistor?
The NPN transistor has its conduction curve where the base is more positive than the emitter, while the collector is also more positive than the emitter. The PNP transistor is exactly opposite, with its conduction curve where the base is less positive than the emitter, while the collector is also less positive than the emitter.
How do you compare ttl logic and cmos logic?
The logic functions for both families of devices are the same. They differ only in their performance and other characteristics. TTL stands for Transistor-Transistor Logic. Advantages include higher speed, better current handling and relative immunity to static discharge. Disadvantages include more power consumption, output high voltage drops and fixed supply voltages (typically 5 volts). CMOS stands for Complimentary Metal Oxide Semiconductor. Advantages include better voltage output, better input voltage tolerance, variable supply voltages, higher density and much lower power consumption (although this increases with frequency). Disadvantages include sensitivity to static electricity and less current handling capability. Most new product development is in the CMOS family due to its more desirable characteristics. TTL and CMOS families contain many "sub-families" designed with special characteristics for specific applications. For instance, some CMOS families can handle greater current, function at higher speeds or operate at much lower voltages. Texas Instruments has more than 40 families of products under CMOS and TTL.
What are the differences between a 7404 hex inverter and a MC789 hex inverter and a uL9109 hex inverter and a 10H189 hex inverter?
The 74xx series of integrated circuits use TTL technology. (Transistor Transistor Logic). They work on 5v power supply, and draw a larger current. The MC type chips are CMOS. (Complementary Metal Oxide Silicon) they work off a more varied voltage range, 5v - 18v and draw less current than TTL. Other different numbers will relate to the package design and speed of operation.
Why CE transistor is more temperature senstive than CB transistor?
In CE transistor volteage divider biasing is used, which is independent of temperature and other parameters.
Why is the sink current higher than the source current?
In what?this is true in TTL logic ICs because the pulldown drive transistor is strong and the pullup drive transistor is weakthis is false in CMOS logic ICs because both pulldown and pullup transistors are identicalin other devices it varies
Why is BC547 better than SL100 transistor?
Bc100 is an npn transister. if we know vlsi/cmos u will come to know about npn & pnp configurations.
What is a typical advantage of CMOS over TTL?
TTL stands for Transistor-Transistor-Logic. N-MOS is a type of a metal oxide semiconductor technology. TTL is faster, but generally uses more power. MOS based devices are slower, they and they use less power. Speed is an issue when dealing with high speed data processing.
What is the minimum voltage required to turn on a pnp transistor?
If it's a germanium transistor, 0.3 volts. If it's the more common silicon transistor, slightly more than 0.6 volts.
What is ttl circuit?
A digital circuit composed of bipolar junction transistors (BJTs). Widely used in all variety of electronic applications, especially prior to CMOS circuits becoming popular, TTL superseded the earlier RTL (resistor-transistor) and DTL (diode-transistor) logic designs, which used more power. In TTL, transistors are used to both isolate inputs and perform the logic switching. A "TTL" designation on a circuit input or output indicates a digital circuit rather than analog.Read more: transistor-transistor-logic-electronics
What is the probability that the transistor will last more than 550 hours?
The answer depends on the type of transistor, how intensively it is used as well as the manufacturer.
Why you not use other than cmos?
Because ROMs are designed using MOS technology.
Different between power transistor and transistor that used in small signal?
Power transistor can conduct large amount of currents through it, more than small signal transistor. power transistor has a vertical structure and small signal transistor has horizontal structure.In power transistor quasi saturation region is present which is absent in the small signal transistor. In power transistor there is a inculsion of drift layer which is not there in the small signal transistor. Power dissipation is less in power transistor and it is more in small signal transistor. b.v.polytechnic,vasai pushkar vaity.
What is the major difference an NPN transistor and a PNP transistor?
The NPN transistor has its conduction curve where the base is more positive than the emitter, while the collector is also more positive than the emitter. The PNP transistor is exactly opposite, with its conduction curve where the base is less positive than the emitter, while the collector is also less positive than the emitter.
How do you compare ttl logic and cmos logic?
The logic functions for both families of devices are the same. They differ only in their performance and other characteristics. TTL stands for Transistor-Transistor Logic. Advantages include higher speed, better current handling and relative immunity to static discharge. Disadvantages include more power consumption, output high voltage drops and fixed supply voltages (typically 5 volts). CMOS stands for Complimentary Metal Oxide Semiconductor. Advantages include better voltage output, better input voltage tolerance, variable supply voltages, higher density and much lower power consumption (although this increases with frequency). Disadvantages include sensitivity to static electricity and less current handling capability. Most new product development is in the CMOS family due to its more desirable characteristics. TTL and CMOS families contain many "sub-families" designed with special characteristics for specific applications. For instance, some CMOS families can handle greater current, function at higher speeds or operate at much lower voltages. Texas Instruments has more than 40 families of products under CMOS and TTL.
What is the differences among TTL and CMOS logic families?
{| ! CMOS ! TTL | CMOS has good packing density. TTL takes up more space CMOS has better noise immmunity. TTL has a smaller noise immunity range CMOS has a large fan out. TTL can power less inputs CMOS consume less power. TTL use more power CMOS are highly static sensitive. TTL IC's tend to be less susceptible to static electricity CMOS uses FETS (Field-Effect Transistors) TTL uses BJTs (Bipolar junction Transistors CMOS can run with a range of supply voltages. TTL IC's run with a 5V supply. CMOS uses Vdd and Vss for it's power connections TTL uses BJTs (Bipolar junction Transistors CMOS takes a lot less power and is therefore suitable for battery applications, but generally speaking can't run as fast. TTL devices can drive more power into a load. CMOS chips can be damaged by static electricity: even a static jolt that you or I can't feel might destroy a CMOS chip! |}
