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Ratioed Logic.

Published byDaniel Michel Modified over 6 years ago

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Presentation on theme: "Ratioed Logic."— Presentation transcript:

1 Ratioed Logic

2 Ratioed Logic

3 Active Loads

4 Load Lines of Ratioed Gates

5 Pseudo-NMOS

6 Pseudo-NMOS NAND Gate VDD GND

7 Improved Loads

8 Improved Loads (2)

9 Example

10 Pass-Transistor Logic

11 NMOS-only switch

12 Solution 1: Transmission Gate

13 Resistance of Transmission Gate

14 Pass-Transistor Based Multiplexer
VDD GND In1 S S In2

15 Transmission Gate XOR

16 Delay in Transmission Gate Networks

17 Elmore Delay (Chapter 8)

18 Delay Optimization

19 Transmission Gate Full Adder

20 (2) NMOS Only Logic: Level Restoring Transistor

21 Level Restoring Transistor

22 Solution 3: Single Transistor Pass Gate with VT=0

23 Complimentary Pass Transistor Logic

24 4 Input NAND in CPL

25 Dynamic Logic

26 Example

27 Transient Response

28 Dynamic 4 Input NAND Gate
VDD Out In1 In2 In3 In4 f GND

29 Reliability Problems — Charge Leakage

30 Charge Sharing (redistribution)

31 Charge Redistribution - Solutions

32 Clock Feedthrough

33 Clock Feedthrough and Charge Sharing

34 Cascading Dynamic Gates

35 Domino Logic

36 Domino Logic - Characteristics

37 np-CMOS

38 np CMOS Adder

39 Manchester Carry Chain Adder

40 CMOS Circuit Styles - Summary

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