10_cmos - CMOS Transistors Readings: 3-3.4 All circuit...

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214 CMOS Transistors Readings: 3-3.4 All circuit elements built from transistors gate source drain substrate gate source drain substrate drain conductor - gate insulator source n p n drain conductor - gate insulator source p n p N-type P-type 215 Transistor Switches N-type P-type G=0 G=1 G=0 G=1 open switch closed switch open switch closed switch = = = = however: good 0 0 poor 1 1 however: poor 0 0 good 1 1 TRUE = 1 = 4 to 5 Volts FALSE = 0 = 0 to 1 Volts
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216 Using Transistor Switches Make a switch that transmits good 0 and 1? Transmission gate: 217 Muliplexors How do we build a 2:1 Mux? A B S F SABF 00X0 01X1 1X00 1X11
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218 Buses and Tristates: Can have more than one source of a signal
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This document was uploaded on 02/11/2012.

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10_cmos - CMOS Transistors Readings: 3-3.4 All circuit...

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