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Trinary Logic Circuits

IP.com Disclosure Number: IPCOM000057951D
Original Publication Date: 1988-Aug-01
Included in the Prior Art Database: 2005-Feb-15

Publishing Venue

IBM

Related People

Authors:
Grimes, DW [+details]

Abstract

Trinary technology which uses a 3-level mode, i.e., ground = 0, VCN = 2, and VDD = 1, offers a wide range of logic operations. The following circuits describe the basic trinary functions of AND, OR, EX-AND, EX-OR, and ABSOLUTE DIFFERENCE indicator. (Image Omitted) AND/MIN Circuit As in binary, the trinary AND/MIN logic output becomes the level of the minimum input line, as shown in Truth Table 1. Truth Table 2 shows the detailed description of the circuit operation. Only the ON MOSFET transistors are labeled; the OFF transistors are indicated as such by a blank. The MOSFETs through which the output logic level is driven are noted in all capital letters, and the MOSFETs which are on but with no consequence, are indicated by lower case letters.