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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.
Wiki User
∙ 13y ago
Wiki User
∙ 13y agoA: LOGICALLY they are the same even physically but these family of IC are not to be interchanged not unless there are buffers to provide compatibility
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Which has a shorter propagation delay TTL or CMOS?
TTL
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 most used ic among ttl and cmos?
ic 8284
What is a TTL-compatible output?
Compatibility in TTL means that the output of one TTL device can be used to drive the Input of the other TTL device , This because the low and high output window fit inside the low and high input window/profile TTL stand for Transistor Transistor Logic, so any voltage between 0 and 5 volt is compatible where any voltage between 3V and 5V is logic 1 and zero volt is logic 0
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.
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.
Compare ttl bi-cmos cmos?
small battery located on the motherboard or computer case.
Interfacing of ttl with cmos and cmos with ttl?
whis is Endurance mors or ttl
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
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.
Which has a shorter propagation delay TTL or CMOS?
TTL
Why you prefer cmos design instead of nand or nor logic?
Since CMOS can be NAND and NOR logic this question seems to make little sense. However. If you by any chance think about CMOS Design versus TTL Design then this is a most interresting question. CMOS drain little current at low speed. As speed increases, the drain increases. TTL drain much the same current no matter the speed. There have been made TTL families that only use a little current. This will some times make this family preferable to CMOS. Especially true regarding high frequency logic circuitry. The benefit from TTL is that one output can source 8-14 inputs (Depending on family) CMOS is an ideal choice for low frequency battery operated equipment. It does not provide long batterylife at high frequencies though as drain of current increases.
TTL logic is preferred to DRL logic?
TTL is faster and does not lose amplitude
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 does TTL applies mean?
TTL is a logic family. A logic family is the set of logic gates designed using a specific approach. Or simply speaking, logic family is the way of implementing logic. TTL stands for transistor - transistor - logic. It involves transistors (BJT) to implement logic. TTL applies means TTL logic family is used or can be applied in that specific application.
Can a TTL chip drive a CMOS chip?
yes
What does applying mean?
TTL is a logic family. A logic family is the set of logic gates designed using a specific approach. Or simply speaking, logic family is the way of implementing logic. TTL stands for transistor - transistor - logic. It involves transistors (BJT) to implement logic. TTL applies means TTL logic family is used or can be applied in that specific application.
