Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Q. Explain working of TTL NAND gate?
The TTL logic family uses only transistors instead of a combination of transistors and diodes. TTL has the same high and low ranges as DTL. TTL is the most popular BJT logic family. A primary reason for the popularity of TTL over DTL is its higher speed. TTL has a typical fan-out of 10 or more, small propagation delays on the order of 2 to 10 ns, and a power consumption of about 2 mW. By contrast, DTL has a typical fan-out of 8 to 10, a propagation delay on the order of 30 to 90 ns, and a power consumption of around 15 mW. The noise margins and fan-out of DTL are generally better than those of RTL, but the switching speeds are about the same. The emitter-coupled logic (ECL) family is also available with increased switching times, although not discussed here in any detail.
The name arises from the common attachment of the emitters of the input transistors. The propagation delays are on the order of 1 ns, but the power consumption is quite high (on the order of 25 mWper gate). Low power consumption combined with relatively small noise margins (< 0.3 V) has made TTL a popular choice and, in particular, the high-speed Schottky diode TTL gates.
A typical TTL NAND gate is shown in Figure. Transistor T1 is a multiple-emitter transistor (npn BJT) which acts as an AND gate. Replacing the base-emitter and base-collector junctions with diodes, T can be represented as shown in Figure.
Explain the Excess three codes - BCD to Decimal Conversion The Excess-3 representation of a number is based on Binary Coded Decimal. It is formed by taking the number in Binary
2's Complement Multiplication Two's complement multiplication follows the similar rules as binary multiplication. For illustration, (-4) × 4 = (-16) 1111
how to design colpitts oscillator?
Consider the magnetic circuit of Figure with an air gap, while neglecting leakage flux. Correct for fringing by adding the length of the air gap l g = 0.1 mm to each of the other
Design and draw a circuit using the cascade system to operate two cylinders (A and B) which, on the operation of a start valve, produces the sequence A - B + B - A+. The cylinder
What is the use of latch signal on the AD0-AD15 bus in an 8086 system? Latch signal is used to load the data those are fetched from memory to bus.
Q. (a) What is the difference between a TEM mode and a TE mode? (b) Explain the terms "cutoff wavelength" and "dominant mode" as applied to waveguides. Find the cutoff wavelengt
how do you get better at school
Design a 4-bit synchronous counter that has the following sequence: 0 ?4? 9?12 ? 14 ?15 and repeat using: i) JK FF ii)D FF
The generator of AM EMFs consists of a battery-driven radiofrequency (RF) EMF generator connected to a 1.5 m long 50 ? coaxial cable, to the other end of which a stainless-steel sp
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd