CS 140L Lecture 1CMOS Logic (3.2 – 3.6)1. Transistors (FET) Field Effect TransistorPowerPoint Presentation2. Transmission Gate3. Inverter4. NAND gate5. NOR gate6. XOR gate7. MultiplexerBasic Boolean AlgebraDeMorgan’s LawCS 140L Lecture 1Professor CK Cheng3/31/02CMOS Logic (3.2 – 3.6)Complementary Metal-Oxide Semiconductor1. Transistors (FET) Field Effect TransistorGSDNMOSDWGSDLG =1 => D =S { D = 1 => S = 0.8 D = 0 => S = 0G = 0 => D&S are separated.GCDSr LW,c WxLAC ’CBGSDPMOSG = 0 => D =S { D = 1 => S = 1 D = 0 => S = 0.2G = 1 => D&S are separated.2. Transmission GateAC CB C = 0 => A&B are separated.C = 1 => A = B3. InverterA BA = 1 => B = 0A = 0 => B = 1Thus B = A4. NAND gateBAABA B Z0 0 10 1 11 0 11 1 0Z = D iff AB = 1.Z = (AB)’Z5. NOR gateBAABA B Z0 0 10 1 01 0 01 1 0Z = 1 iff A+B = 0.Z = (AB)’ = (A+B)’Z6. XOR gateBAZB’A’BAB’A’Z = ab’ + a’b = a + b7. Multiplexerd1d2SSS ‘ZIf S=1, Z = d1Else (S=0), Z = d0Z = S d1 + S’ d0Basic Boolean Algebraa + a = 1a * a = 01 + a = 11*a = 1a + a = aa * a = aaaDeMorgan’s Law(a + b)’ = a’ * b’(a*b)’ = a’ + b’a
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