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The main advantage of ECL over TTL is speed.
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What is the IC number for 3-input nand gate?
TTL 7410CMOS 4023DTL 962/C
What is active pull up in TTL NAND gate?
All standard TTL devices use a two transistor "totempole" output, one transistor provides an active pull down and the other an active pull up. Only one of these transistors is on at a time and one or the other is always on. Open collector TTL devices omit the active pull up transistor so that several outputs can be "wired" together and an external resistor provides a passive pull up. The only problem with this is the risetime of a passive pullup is much longer than the risetime of an active pull up, making the circuit slower. Tristate TTL devices have the same two transistor "totempole" output as standard TTL devices, but the circuits that control these transistors are more complex allowing a "third state" in which both transistors are turned off, leaving the output of the device floating. This allows many tristate TTL devices to be connected to a single line with only one actually driving it at a time (preventing conflicts with one device pulling up and another pulling down).
What is voltage level of ttl?
Standard TTL (which stands for Transistor-Transistor Logic) circuits operate on a 5V power supply. The typical level for a logical "0" is between 0V and 0.8V, and the typical level for a logal "1" is somewhere between 2.2V and 5V. Typically, a value little lower than Vcc (power source voltage) is used; in case of a 5V supply, this is usually around 4.5V, but TTL devices are built to withstand full Vcc as input, just in case.
What type of gate is the 74LS00?
The 74LS00 is a quad two input NAND gate with low power schottkey TTL implementation.
What does transistor to transistor logic mean and what are its uses?
A: TTL-DTL-RTL are family of gates called by the name. Example TTL means Tran. trans. logic. It refers to the inputs for these gates as the type. T= Transistor D=Diode R=Resistor While they do perform the same function their characteristics in performance varies greatly.
Which logic circuit is low energy logic circuit ECL OR TTL?
I believe you mean low power, not low energy.TTL is typically lower power than ECL, but not always. Some TTL devices have been higher power than similar ECL devices.
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.
Why ECL is faster than TTL in digital electronics?
Because in ECL logic Transistors doesn't go to saturation region hence saving the recovery time and making this family the faster.
Why ECL family is fastest?
ECL or emitter coupled logic is faster than TTL type logic because the switching transistors do NOT go into saturation in either the on or off state. The switching time from saturation in a high output to saturation in a low state like TTL requires that the junction capacitance be overcome and that the charge in the saturated junction get swept out. ECL is sensitive to a threshold level only.
What are the advantage of schottky TTL?
High speed operation.
How do you compare the advantages and disadvantages of TTL CMOS and ECL logic families?
TTL, CMOS and ECL, all them are Small Scale Integration technologies used in different contexts. ECL basic family reaches rises and falls times of a few ns due to use of a small voltage range and a lot of current, involving high power consumptions. High current and high speed induces a lot of electric-noise put layout designers to a complex and long design-process of PCB. CMOS basic family, otherwise, it is a very low power consumption SSI technology. CMOS uses high voltage digital levels and power, but it is relatively slow. This technology is low power and it has a high level of noise immunity. TTL basic family was the head of all other digital technologies. It is a sensible current consumer, a medium speed.
Interfacing of ttl with cmos and cmos with ttl?
whis is Endurance mors or ttl
What are the advantage of ttl?
TTL is faster than diode-transistor logic, and does both amplification and logical operations. While they are rather obsolete for most modern designs, they are good for simple and specialized products. So if you need a simple design that other people may need to modify later, then TTL circuits might be more feasible than using a microprocessor. TTL circuits are simple, well-documented, and well-understood. TTL circuits are also good for using for teaching purposes.
Which has a shorter propagation delay TTL or CMOS?
TTL
What is the full form of TTL?
TTL stands for Time To Live
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 meant by standard load in digital electronics?
One standard load is the load of a typical input of a specified logic family. This is more relevant with bipolar logic families (e.g. RTL, DTL, TTL, ECL, I2L) than MOS logic families (e.g. NMOS, CMOS). Outputs of devices in these logic families are then rated by the number of standard loads they can drive. However when crossing between logic families (e.g. LS TTL to S TTL) the concept of standard loads is less useful and actual high/low state input current loading and output drive capability calculations should usually be made.
