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Which logic family has the highest noise immunity?
Each logic family has a noise margin (also called "noise immunity") specified by the manufacturer. Manufacturers guarantee that the digital logic will still produce correct results even when some small amount of noise is superimposed on a gate output signal. The maximum amount of such noise that manufacturers are willing to guarantee is the noise margin. In order from highest to lowest noise immunity: high-threshold logic: ??? CMOS has a noise margin of 2.95 volts with a 10 V power supply. CMOS has a noise margin of 1.45 volts with a 5 V power supply. CMOS has a noise margin of 0.6 volts with a 3 V power supply. TTL has a noise margin of 0.3 volts. integrated injection logic (IIL): ???
What are TTL gates?
TTL stand for transistor transistor logic it could be DTL for diode or any other type of family.
Why use ic 7404?
you need some TTL inverter gates.
What will happen if you connect outputs of two TTL gates directly?
floating state
Can DTL logic work with TTL logic?
Yes, standard 5V powered DTL and TTL devices are fully input/output logic level and fanout compatible. However DTL chips are nearly impossible to find today. The only thing to be careful about is old DTL based designs often used wired-and gates (i.e. directly tying outputs of several gates together to reduce part count). You cannot do this with normal TTL!
Difrance between ic and ttl?
ic refers to integrated circuits and ttl refers to transistor transistor logic. ttl is a family which provides the basic or former structure of logic gates for example different logic gates such as NAND,NOR etc can be made out with the help of transistors connected in a specific manner. integerated circuits are the combination of logic gates presented on a base with equal number of input pins . for example IC-7408 contains 14 pins
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.
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 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 TTL logic?
TTL Logic Circuits - "Transistor Transistor Logic" - are made using BJTs. They operate from +5 Volts. These are available from simple AND, OR, NAND Gates to complex circuits. The voltage levels are INPUT OUTPUT Low (0) < 0.8V <0.4V High (1) >2.0V >2.4V Levels in between are undefined. The outputs are better than the inputs by 0.4V thus offering a noise margin. These are seldom used these days as other logic families have been introduced offering more advantages like, speed, lower power, wider / lower operating voltage, higher fanouts.
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
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.
