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

Vector, Explain the characteristics of vector processing

Explain the characteristics of vector processing

Example of shared programming using library routines, Q. Example of shared ...

Q. Example of shared programming using library routines? Think about subsequent set of statements  Process A                                  Process B                  :

Write the truth table and simplify karnaugh map, For F = A.B.C + B.C.D ...

For F = A.B.C + B.C.D ‾ + A‾.B.C ,  write  the  truth  table and simplify using Karnaugh map . And. Simplification of Logic Function F = A B C + B C‾ D + A‾ B C. Therefore the

Intentional hacking helps in maintaining better security, Intentional hacki...

Intentional hacking helps in maintaining better security Several companies employ professionals as security specialists whose basic job is to detect and cover loopholes in t

What is normal form, What is normal form? A normal form is a guideline ...

What is normal form? A normal form is a guideline for relational database tables that enhances data consistency. As tables satisfy higher levels of normal forms, they are less

Calculate blocking probability in a two stage network, In a two stage netwo...

In a two stage network there are 512 inlets and outlets, r=s=24. If the probability that a given inlet is active is 0.8, calculate: Blocking probability Given: N =M =512,

Determine the concepts of object oriented analysis, Determine the concepts ...

Determine the concepts of Object Oriented Analysis  In OOA the initial focus is on identifying objects from the application domain, after that fitting those procedures around

Use of instruction register and program counter, Use of instruction registe...

Use of instruction register and program counter: Q. What is the use of instruction register (IR) and program counter (PC)? Ans: The instruction register (IR) holds the inst

AWS, aws hosting

aws hosting

Queue depth should be greater than zero, Tell me which queue having present...

Tell me which queue having present queue depth should be greater than zero? Ans) Event queues Open MQ Explorer by selecting Start > Programs > IBM WebSphere MQ > WebSphere

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