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Pass-Transistor Logic. AND gate NMOS-only switch.

Published bySamuel Wilkinson Modified over 9 years ago

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Presentation on theme: "Pass-Transistor Logic. AND gate NMOS-only switch."— Presentation transcript:

1 Pass-Transistor Logic

2 AND gate

3 NMOS-only switch

4 VB does not pull up to 2.5V, but 2.5V -VTN Threshold voltage loss causes static power consumption + slower transition

5 Solution 1: Transmission Gate

6 Resistance of Transmission Gate

7 Pass-Transistor Based Multiplexer GND V DD In 1 In 2 SS S S

8 Transmission Gate XOR

9 Delay in Transmission Gate Networks

10 Elmore Delay (Chapter 8)

11 Delay Optimization

12 Transmission Gate Full Adder

13 Solution 2: NMOS Only Logic: Level Restoring Transistor

14 Level Restoring Transistor

15 Solution 3: Single Transistor Pass Gate with V T =0

16 Complimentary Pass Transistor Logic

17 4 Input NAND in CPL

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