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In IC (integated circuit) chips TTL stands for (Transistor Transistor Logic) which means that the chip incorporates bipolar transistors to provide both input logic and output power drive stage switching functions. In a CMOS chip a different type of device is used in switching. The (FET) Field Effect Transistor is used but in a chip it is more commonly known as the MOS FET. Since the MOS FET operates on different principles it is favored in chip operation since it operates at cooler temperatures in which heat is one of the greatest enemies of any IC. High speed switching capability is greatly increased because of this factor. In the replacement of IC's of this type safe handling precautions should be observed and anti-static wrist straps with ground wires attached to ground should be worn. This is used to drain static as the chip may be destroyed otherwise. FET devices are designed with internal resistors to drain off static, but I would observe all precautions to be on the safe side.
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Interfacing of ttl with cmos and cmos with ttl?
whis is Endurance mors or ttl
Which has a shorter propagation delay TTL or CMOS?
TTL
Which logic family has the least propagation delay?
Here are the propagation delays for these gatesa) ECL = 2nsb) TTL = 1.5-33ns depending on the type of TTL. Conventional TTL is 9ns, Advanced Schottky TTL is 1.5nsc) RTL = 25nsd) CMOS = 5-20ns depending on if it is conventional CMOS, TTL pin compatible CMOS, high speed TPC CMOS or TTL compatible CMOSSo the fastest would be the Advanced Schottky TTL (74ASxx) at 1.5ns but the choice simply said TTL which I would interpret as Conventional TTL (74xx/54xx) which would have a propagation delay at 9ns.So the winner is ... (a) ECL which has a propagation delay at 2ns.
Can a TTL chip drive a CMOS chip?
yes
Compare ttl bi-cmos cmos?
small battery located on the motherboard or computer case.
What is the most used ic among ttl and cmos?
ic 8284
Can a ttl chip drive a cmos chip without modification?
A TTL chip can drive a CMOS chip without modification if the CMOS chip is designed to do so. Many large scale CMOS chips, such as microprocessors, have LS (or equivalent) TTL IO pins, so you can drive them directly. In the absence of that, you can use a pull up resistor, but you need to look carefully at fan-in, fan-out, rise time, fall time, and power requirements, in order to assure proper operation. It is best to use chips that are designed for the application, such as TTL to CMOS buffers.
Full form of vcc and vdd in TTL and CMOS?
vcc-voltage collector to collector vdd- voltage deran to deran ttl- transister transister logic cmos - complementary metal oxide same conductor
What is the difference in the switching speed of TTL and CMOS?
we know the answer.. but you are all not that much capable to understand that answer
Why is a TTL logic gate faster than a CMOS logic gate?
The switching time (on and off) of the TTL logic gate is very fast in comparison with CMOS logic gate. However, they could not tolerate higher range of power supply.
What is the difference between TTL and CMOS interms of fan infan outlogic levelspropagation delay?
The power dissipation of CMOS devices is around 100 times lower than the value of power dissipation for TTL. This makes CMOS more suitable for devices to run on battery power and devices allows like mobile phones to have a longer batter life. CMOS devices only use power when switching from one state to the other state (high to low, or low to high) so on they need power for less of the time than TTL devices which use current and dissipate power all the time that they have a power supply.
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! |}
