Understanding noise margins.

Ken Martin was a distinguished professor at the University of Toronto, known for his expertise in both analog and digital circuits. This duality is what makes Digital Integrated Circuit Design unique.

The book is available in several editions, including a 2014 paperback revision, and can be found through major retailers:

Using RC approximations to predict gate delays and rise/fall times in CMOS inverters. 2. Advanced CMOS Logic Styles