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QUANTUM DIODE FULL-ADDER AND D FLIP-FLOP

IP.com Disclosure Number: IPCOM000007489D
Original Publication Date: 1995-Jul-01
Included in the Prior Art Database: 2002-Apr-01
Document File: 2 page(s) / 70K

Publishing Venue

Motorola

Related People

Jy-Der Tai: AUTHOR

Abstract

(1) QUANTUM DIODE FULL-ADDER The full-adder consists of two quantum diodes like a full-adder. Four states of the bottom diode and six MOS transistors. The three input signals are used to produce combination of CARRY and are labeled as A, B and C while the outputs are SUM-BAR outputs. The logic value of the output CARRY and SUM-BAR. With proper size ratio of signals relative to the number of transistor turned transistors and quantum diodes, this circuit behaves on is listed in Table 1.

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0 M

MOlYlROLA Technical Developments

QUANTUM DIODE FULL-ADDER AND D FLIP-FLOP

by Jy-Der Tai

(1) QUANTUM DIODE FULL-ADDER

  The full-adder consists of two quantum diodes like a full-adder. Four states of the bottom diode and six MOS transistors. The three input signals are used to produce combination of CARRY and are labeled as A, B and C while the outputs are SUM-BAR outputs. The logic value of the output CARRY and SUM-BAR. With proper size ratio of signals relative to the number of transistor turned transistors and quantum diodes, this circuit behaves on is listed in Table 1.

VDD I

top III <----quantum diode

I x------x-----.-x--------------------x-----S"M_BAR

-I -I -I -I A--l- B--l- C--l- A--l-

I I I I I -I X------X-------X------CARRY B--I-

               I bottom I -I quantum diode ----> I II C--l-

I I I I x--------------------x

I I vss

# of transistor ON SUM-BAR SUM CARRY ________________________________________---

0 1 0 0 1 0 0

f3

1

3 0 1 1

2 1

Table 1: Quantum Diode Full-Adder

0 Molorola. Inc. 19% 158 Julv 1995

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MOTOROLA Technical Developments

@

The result can be converted to the truth table ofa full-adder as shown in Table 2.

a b

0 0 0 0 0 1 0 1 1 0 1 0 1 1 1 1

c *"Ill carry
.--._______________

0 0 0 1 1 0 0 1 0 1 0 1 0 0' 0 1 1 0 0 1 1 1 1

Table 2:

(2) QUANTUM DIODE D FLIP-FLOP

  With proper arrangement of the device size rel- ative to supply voltage, the three serial transistors can be eliminated. Thus a...