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What is the noise margin for standard TTL gates?
The low state dc noise margin for TTL dates is 0.3v and the high state noise margin is 0.7v
Why an open ttl gate behaves as a logic high input?
because TTL have a bias input setup to eliminate noise therefore the output will follow the logic one input if left open
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.
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
What is a TTL compatible output?
A: TTL gates operates on the premise of having +5 dc on the rail therefore the output will be in the range +5 volts. A cmos gate while similar to a TTL function is not really compatible since the output volts can be 12 volts or more. Besides that TTL gates require some input current for it to operate
What are the advantage of schottky TTL?
High speed operation.
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 noise immmunity is more in integrator than differentiator?
noise is a ac signal(high frequency range), as LPF allows only lower frequencies integrator is has more noise immunity than differentiator
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
Why do TTl integrated circuits assume unconnected inputs to be at logic?
Unused ttl inputs would normally default to logic 1 if left floating. but these inputs could act as antennas under certain conditions and they could pick up noise which can cause the circuit to malfunction.
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.
