What is the necessity of interfacing in digital ic, Computer Engineering

Assignment Help:

What is the necessity of Interfacing in digital ICs and what are the points to be kept in view, while interfacing between TTL gate and CMOS gate?

Ans:

To realize the optimum performance in digital system, the device from more than one logic families can be utilized, that takes advantages of the better characteristics of each logic families. For illustration, CMOS logic ICs can be utilized in those parts of the system where low power dissipation is essential, and TTL can be utilized where high speed of operation is needed. While CMOS derives TTL, the subsequent conditions are essential to be satisfied.

VOH(CMOS) ≥ VIH(TTL)

VOL(CMOS) ≤ VIL(TTL)

-IOH(CMOS) ≥ NIIH(TTL)

-IOH(CMOS) ≥ -NIIL(TTL)

1772_TTL-to-CMOS interfacing using pull-up register.png

 

Figure 1: TTL-to-CMOS interfacing using pull-up register.

 

1140_CMOS-to-TTL interfacing using a CMOS buffer IC.png

 

Figure 2: CMOS-to-TTL interfacing using a CMOS buffer IC


Related Discussions:- What is the necessity of interfacing in digital ic

Corresponding port numbers, A) Around how many entries are there in this fi...

A) Around how many entries are there in this file on your VM? B) Select and list names and corresponding port numbers for four well-liked services listed in this file?

Diffrence between RISC and CISC architecture, Q. Diffrence between RISC and...

Q. Diffrence between RISC and CISC architecture? CISCs provide better support for high-level languages since they include high-level language constructs such as CASE, CALL etc

What is a parent class of all java classes, Parent class of all Java classe...

Parent class of all Java classes is? All Java class's parent class is java. lang.object.

Single program multiple data, SPMD is actually a "high level" programming m...

SPMD is actually a "high level" programming model that can be built upon any combination of the previously mentioned parallel programming models. A single program is executed by al

Define underflow and overflow, Define underflow and overflow. Underflow...

Define underflow and overflow. Underflow: If the result the arithmetic operation including n-bit numbers is too small to show by n-bits, underflow is said to occur. Overflow

Create a system dynamic model, Easter Island is a small island (about 150 s...

Easter Island is a small island (about 150 square miles in area) in the Pacific Ocean about 2,000 miles from South America. In about 400 AD there was a small population of settlers

Explain the term - restating the requirements, Restating the Requirements ...

Restating the Requirements To have clarity of analytical model of system you must state requirements specific performance constraints with optimization criteria in one documen

What are the user interfaces of interactive lists, What are the user interf...

What are the user interfaces of interactive lists? If you require the user to communicate with the system during list display, the list must be interactive.  You can describe

Analog to Digital convertor, The A/D converter whose conversion time is ind...

The A/D converter whose conversion time is independent of the number of bits is ? Ans. Parallel conversion is the A/D converter whose conversion time is independent of the Numbe

Define the term- encryption, Define the term- encryption The user would ...

Define the term- encryption The user would then type in O P E and card purchase will be authorised. This extra protection is used as well as encryption. Some of the new syste

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

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!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd