Lab Manual For Logic Gates In Cmos
4D6 Lab Manual - Chapter 6 Chapter 6 Gate Characteristics Objectives: To present basic characteristic and limitations of gates. Topics covered:. Logic Families Digital logic is implemented using integrated circuits which are classified into families based on their basic electronic structure. A common structure is the bipolar transistor/transitor logic (TTL) which you will be using in the laboratory.
Dynamic Cmos Logic
Another common structure is CMOS ( complementary metal-oxide-silicon) technology which exhibits low power and high noise immunity. Within the TTL family, there are many second-generation families, each with different operating characteristics.
Two important factors in the consideration of each logic family are speed and power consumption. These two tend to be directly related, i.e., higher speed consumes more power. Families can be characterized by the relationship between propagation-delay and power.
The chart shows the speed-power relationship of common TTL families. Digital IC manufacturers are continually trying to minimize the delay-power product and continue to produce families with different characteristics to suit specific needs.