Circuit Simulator - TTL NAND
Why should I learn to use the circuit simulator to design TTL NAND circuits?
Learn how to use circuit simulator software to design your own TTL NAND circuits.
Where can I get a TTL NAND circuit diagram with an explanation?
IndiaBIX provides numerous TTL NAND circuit diagrams with detailed explanations and working principles.
How do I design a TTL NAND circuit with this circuit simulator?
You can easily design TTL NAND circuit diagrams by practising with the given circuit simulator. With this online circuit simulator, you can design and simulate your own electronic circuits.
TTL NAND
Circuit Description:
This is an NAND gate implemented using transistor-transistor logic. Click on the inputs on the left to toggle their state. When all of the inputs are high, the output is low; otherwise, the output is high.
When both inputs are high, the two transistors on the left are in reverse active state. A current flows through the 4.7k resistor through the base and collector of these transistors, and then through the base of the transistor on the right, saturating it and bringing the output down near ground.
When both inputs are low, the easiest path to ground through the 4.7k resistor is through the base of the transistors on the left to the inputs. This brings their collector voltages low enough so that very little current can flow through the base of the transistor on the right. This keeps that transistor off, bringing the output up to 5 V.
When only one of the inputs is low, that input provides the easiest path to ground, through its corresponding transistor. This keeps the transistor on the right switched off.
When both inputs are high, the two transistors on the left are in reverse active state. A current flows through the 4.7k resistor through the base and collector of these transistors, and then through the base of the transistor on the right, saturating it and bringing the output down near ground.
When both inputs are low, the easiest path to ground through the 4.7k resistor is through the base of the transistors on the left to the inputs. This brings their collector voltages low enough so that very little current can flow through the base of the transistor on the right. This keeps that transistor off, bringing the output up to 5 V.
When only one of the inputs is low, that input provides the easiest path to ground, through its corresponding transistor. This keeps the transistor on the right switched off.
Discussion:
5 comments Page 1 of 1.
ABDULELAH said:
1 decade ago
What is the right circuit to get XOR & XNOR in TTL?
(6)
Mohanteja said:
1 decade ago
Thank you very much sir.
(1)
Anila said:
1 decade ago
Thank you very much for such a helping and awesome site its very helpful for our exams.
(4)
Ronke said:
1 decade ago
What is the advantage and disadvantages of ttl?
(2)
Pratyusha Maitra said:
1 decade ago
Brilliant...thank you very much for such a helping and awesome site...there is everything that a student needs to prepare for all kind of exams...and specially the electronic circuit simulator!!!...just can't believe it...really amazing...I must should know about this site earlier...Thanks a lot again !!
(2)
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