The Transistor-Transistor Logic was applied to many bipolar logic generations by slowly improving the speed as well as power utilization . Each TTL chip includes hundreds of transistors. Generally, functions in a single package range from logic gates to a microprocessor.
TTL NAND gate is basic building block of this logic family.This logic circuit is mainly build up of NPN transistors, PN junction diodes and diffused resistors and there are various subfamilies of this logic gate.
