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Compare TTL with CMOS logic families.

written 3.5 years ago by teamques10 ★ 68k

•   modified 3.5 years ago

analog electronics

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written 3.5 years ago by teamques10 ★ 68k

Comparison between TTL and CMOS technology:

TTL	CMOS
TTL stands for Transistor-Transistor Logic. The name is derived from the use of two Bipolar Junction Transistors or BJTs in the design of each logic gate.	CMOS stands for Complementary Metal Oxide Semiconductor.
TTL is a classification of integrated circuits.	CMOS is another classification of ICs that uses field effect transistors in the design.
The density of logic gates is less in TTL as compared to CMOS.	The primary advantage of CMOS chips to TTL chips is in the greater density of logic gates within the same material.
A single gate on a TTL chip can consume around 10mW of power.	An equivalent single gate in a CMOS chip can consume around 10nW.
TTL chips are lesser delicate and is not very suseptible to electrostatic discharge.	CMOS chips are a bit more delicate compared to TTL chips when it comes to handling as it is quite susceptible to electrostatic discharge.
TTL chips do not have CMOS logic.	There are CMOS chips that have TTL logic and are meant as replacements for TTL chips.
A logic gate in a TTL chip can consist of a substantial number of parts as extra components like resistors are needed.	A single logic gate in a CMOS chip can consist of as little as two Field Effect Transistors.
TTL circuits consumes more power compared to CMOS circuits at rest.	CMOS circuits comsumes less power at rest.

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