Inverse toggle XOR and XNOR circuit

Details Inverse toggle XOR and XNOR circuit Inverse toggle XOR and XNOR circuit

1997-03-07

1999-01-19

Santamauro, Jon

Electronic digital logic circuitry

Exclusive function

With field-effect transistor

326121, 326113, H03K 1921, H03K 190948

Patent

active

058617620

ABSTRACT:
A four transistor XOR or XNOR gate includes an inverting stage and a non-inverting stage. The transistors in each stage are coupled so as to enable changing inputs and existing inputs to drive the output in the same direction. The XOR gate and XNOR gate take advantage of a known order or inputs to reduce the delay of the gate.

REFERENCES:
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patent: 4621338 (1986-11-01), Uhlenhoff
patent: 4749887 (1988-06-01), Sanwo et al.
patent: 5442801 (1995-08-01), Sato et al.
patent: 5568067 (1996-10-01), McDermott et al.
patent: 5736868 (1998-04-01), Kim et al.
"High Performance Self-Reset CMOS TXOR and CXOR Circuits," IBM Technical Disclosure Bulletin, 37:271-72 (Jul. 1994).
Dearden et al., "Four-Device Exclusive Or CMOS Circuit," IBM Technical Disclosure Bulletin, 25:2375-76 (Oct. 1982).
Dearden et al., "Eight-Device Exclusive Or CMOS Circuit," IBM Technical Disclosure Bulletin, 25: 2377-79 (Oct. 1982).
Laurence F. Wood, "High Performance Analysis and Control of Complex Systems Using Dynamically Reconfigurable Silicon and Optical Fiber Memory," IEEE Workshop on FPGAs for Custom Computing Machines, IEEE Computer Society Press (Apr. 5-7, 1993), pp. 132-141.

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