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Compare TTL and CMOS logic families

written 6.1 years ago by vedantchikhale • 860

modified 5.2 years ago by abhishektiwari1 • 100

digital system design

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written 6.1 years ago by vedantchikhale • 860

Parameter	TTL	CMOS
Basic gate	NAND	INVERTER
Circuit	Transistor-Transistor	Complementary MOS
Speed of operation	More	Less
Propagation delay per gate	4 - 12 ns	50 ns
Nominal supply voltage	5 V	3 to 15 V
Wired collector capability	With passive pull up	With tristate output
Fan-out	10	50
Noise immunity	Good	Very good to excellent
Compatibility with other families	With DTL	No, but compatible with TTL for 5 V supply
Available functions	Very high	High

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