Comparison of MM74HC to 74LS, 74S and 74ALS Logic

PublishTime：2022-01-29

The MM54HC/MM74HC family of high speed logic components provides a combination of speed and power characteristics that is not duplicated by bipolar logic families or any other CMOS family. This CMOS family has operating speed ssimilar to low power Schottky (54LS/74LS) technology.MM54HC/MM74HC is approximately half as fast (delays are twice as long) as the 54ALS/74ALS and 54S/74S logic.Compared to CD4000 and 54C/74C, this is an order of magnitude improvement in speed, which is achieved by utilizingan advanced 3.5 micron silicon gate-recessed oxide CMOS process. The MM54HC/MM74HC components are designed to retain all the advantages of older metal gate CMOS, plus provide the speeds required by today’s high speed systems.
Another key advantage of the MM54HC/MM74HC family is that it provides the functions and pin outs of the popular 54LS/74LS series logic components. Many functions whichare unique to the CD4000 metal gate CMOS family have also been implemented in this high speed technology. In ad-dition, the MM54HC/MM74HC family contains several spe-cial functions not previously implemented in CD4000 or54LS/74LS.Although the functions and the speeds are the same as 54LS/74LS, some of the electrical characteristics are differ-ent from either LS-TTL, S-TTL or ALS-TTL. The following discusses these differences and highlights the advantages and disadvantages of high speed CMOS.

Brand of Product：	ON Semiconductor
Part#：	MM74HC 、 74S 、 74ALS 、 74LS 、 MM54HC 、 54LS 、 54ALS 、 54S More Part#
Product Category：	More
Application：	More
Data Type：	Application note & Design Guide More
Safety & Environment Standards：	More
Operating Temperature：	Please see the document for details
Qualification Grade：	More
Qualification Approval：	More
Package：
Language：	English Chinese Chinese and English Japanese
Date of Creation：	2021/8/6
Version Number：
Data Encoding：	AN005101;AN-319
Data Size：	399 KB

Data section preview(2pages)

- The full preview is over. If you want to read the whole 11 page document,please Sign in/Register -

Download

+1 Like
Add to Favorites

Recommend

Technical Resources

More>

All reproduced articles on this site are for the purpose of conveying more information and clearly indicate the source. If media or individuals who do not want to be reproduced can contact us, which will be deleted.

Integrated Circuits