ecen 248: introduction to digital systems design lecture 5 dr. shi dept. of electrical and computer...
Post on 22-Dec-2015
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TRANSCRIPT
ECEN 248: INTRODUCTION TO DIGITAL SYSTEMS
DESIGN
Lecture 5
Dr. Shi
Dept. of Electrical and Computer Engineering
How are Gates Implemented? By Metal-Oxide-Semiconductor Field
Effect Transistor (MOSFET) PMOS if source/drain are p-type
semiconductor NMOS if source/drain are n-type
semiconductor CMOS (complementary MOS)
GATE
SOURCE DRAIN
Oxide 5 nm
Gate length 20 nm
Hair=0.1mm1000um=1mm1000nm=1um
High Fan in
Fan-in: Number of inputs Fan-out = Number of outputs
This gate has large fan in Large delay