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

What do you meant by hosts, Q. What do you meant by Hosts? Hosts are in...

Q. What do you meant by Hosts? Hosts are in general, individual machines at a specific location. Resources of a host machine is generally shared and can be utilized by any user

Microprocessor, what is opcode for addition and subtraction

what is opcode for addition and subtraction

Illustrate shift micro-operations, Q. Illustrate Shift Micro-operations? ...

Q. Illustrate Shift Micro-operations? Shift is a valuable operation that can be used for serial transfer of data. These operations can also be used along with other (arithmetic

Define apple mobileme calendar, Define Apple MobileMe Calendar The Mobi...

Define Apple MobileMe Calendar The MobileMe Calendar is a web-based calendar that can be accessed from any computer linked to the Internet, Mac or Windows. What makes it more u

Find the responses when a computer broadcast an arp reqqest, How many respo...

How many responses does a computer expect to receive when it broadcast an ARP request? Why? An ARP (Address Resolution Protocol) request message is put in a hardware frame and

What is common type system, What is "Common Type System" (CTS)?  CTS e...

What is "Common Type System" (CTS)?  CTS explain all of the basic types that can be used in the .NET Framework and the operations performed on those type. All this time we hav

Develop a simple patient management system, In the first part of Assignment...

In the first part of Assignment 2A you will develop a simple Patient class, representing an Patient who is to be admitted for a minor procedure that only requires a 1-2 day stay in

Explain scientific applications and image processing, Scientific Applicatio...

Scientific Applications/Image processing Major of concurrent processing applications from science and other academic disciplines, are mostly have based on numerical simulations

Pebble merchant, There is a pebble merchant.He sells the pebbles,that are u...

There is a pebble merchant.He sells the pebbles,that are used for shining the floor.His main duty is to take length of the room''s sides. program 1 : package test.padovanstring

What is called static and dynamic branch prediction, What is called static ...

What is called static and dynamic branch prediction? The branch prediction decision is always the similar every time a given instruction is implemented. Any approach that has t

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