10-7 Metal-Oxide Semiconductor(MOS)

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10-7 Metal-Oxide Semiconductor(MOS)

• Field-Effect Transistor(FET)
• Unipolar transistor
• Depend on the flow of only one type of carrier
• JFET, MOS
• See Fig. 10-19 for basic structure of MOS

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Fig. 10-19 Basic structure
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Fig. 10-20 Symbols for MOS Transistor
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Fig. 10-21 n-channel MOS logic
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10-8 Complementary MOS(CMOS)

• CMOSconsists of NMOS and PMOS
• Inverter is the basic circuit
• Fig. 10-22(a)

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Fig. 10-22 CMOS logic circuits
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Fig.10-23 CMOS inverter
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10-9 MOS transmission gate

• transmission gate is a special CMOS circuit
• Cant be implemented by other logic families
• Controlled switch
• Simplifying various digital components when using
  CMOS fabrication
• Fig. 10-24(a) is a basic circuit of transmission
  gate
• Parallel connection of a NMOS and a PMOS

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Fig. 10-24 Transmission gate
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Fig. 10-25 Bilateral switch
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Fig. 10-26 XOR by transmission gate
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Fig. 10-27 Multiplexer with transmission gate
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Fig. 10-28 D latch with tranmission gates