CMOS Vs TTL

The difference between the two Logic Styles are:
TTL circuits utilize BJTs while CMOS circuits utilize FETs.
CMOS allows a much higher density of logic functions in a single chip compared to TTL.
TTL circuits consumes more power compared to CMOS circuits at rest.
CMOS chips are a lot more susceptible to static discharge compared to TTL chips
Propagation delay is more in CMOS compared to TTL