Usually less total delay using a few smaller logic gates rather than one large complex gate Only want to design and characterize a small library of gates Figure by MIT OCW. What’s the best way to implement a given logic function? Figure by MIT OCW. 6.884 – Spring 2005 2/07/2005 L03 – CMOS Technology 27 TTL NAND gates. In the TTL family the number of transistors required to implement a NAND gate is less than that required to implement other gates such as AND, OR and NOR. Another factor in favor of NAND gates is the fact that any combinational logic function can be realized using just NAND gates. TTL CHARACTERISTICS i. Using X-OR and basic gates ii. Using only nand gates. Apparatus Required: - IC Trainer Kit, patch chords , IC 7486, IC 7432, IC 7408, IC 7400, etc. Procedure: - 1. Verify the gates. 2. Make the connections as per the circuit diagram. 3. Switch on V CC and apply various combinations of input according to the truth table. 4.

EXPERIMENT #5: IMPLEMENTATION WITH ONLY NAND GATES/NOR GATES OBJECTIVES: • Design and implement logic circuits using only NAND gates • Design and implement logic circuits using only NOR gates Equipment and ICs: • Mini-Lab ML-2001 lab station • 1 - IC 7493 4-bit Ripple Counter • 2 - IC 7400 Quadruple 2-input NAND gates Implementation with AND/OR/NOT & NAND gates. January 18, 2012 ECE 152A - Digital Design Principles 18 ... products representation using only NAND gates. January 18 ... Implementation with AND/OR/NOT & NAND gates. January 18, 2012 ECE 152A - Digital Design Principles 18 ... products representation using only NAND gates. January 18 ...