AC Characteristics of MM74HC High-Speed CMOS

PublishTime：2022-01-29

When deciding what circuits to use for a design, speed is most often a very important criteria. MM74HC is intended to offer the same basic speed performance as low power Schottky TTL while giving the designer the low power and high noise immunity characteristics of CMOS. In othe rwords, HC-CMOS is about ten times faster than CD4000 and MM54C/MM74C metal-gate CMOS logic. Even though HC-CMOS logic does have speeds similar to LSTTL, there are some differences in how this family’s speeds are specified, and how various parameters affect circuit performance.
To give the designer an idea of the expected performance,this discussion will include how the AC characteristics of high-speed CMOS are specified. This logic family has beenspecified so that in the majority of applications, the specifications can be directly applied to the design. Since it is impossible to specify a device under all possible situations, performance variations with power supply,loading and temperature are discussed, and several easy methods for determining propagation delays in nearly any situation are also described. Finally, it is useful to compare the performance of HC-CMOS to 74LS and to CD4000.

Brand of Product：	ON Semiconductor
Part#：	MM74HC 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：	AN005067;AN-317
Data Size：	303 KB

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