The Art of Electronics[1] has a fantastic section on differential signaling and common mode voltage. That book is a treasure even today despite being published

The Art of Electronics[1] has a fantastic section on differential signaling and common mode voltage. That book is a treasure even today despite being published initially in 1980. [1] https://en.wikipedia.org/wiki/The_Art_of_Electronics https://en.wikipedia.org/wiki/The_Art_of_Electronics