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Generation of Multiple Single-Phase Outputs From a Single DCCS Decode Circuit

IP.com Disclosure Number: IPCOM000047794D
Original Publication Date: 1983-Dec-01
Included in the Prior Art Database: 2005-Feb-08

Publishing Venue

IBM

Related People

Authors:
Cohen, ME Leininger, JC Munoz-Bustamante, C Portuondo, I [+details]

Abstract

Multiple decode functions are provided for use in macros, off-chip drivers, etc. The article in [*] describes the use of current switches that are differentially connected to the inputs of a cascode decoder to provide high-speed operation at low power levels. A Differential Cascode Current Switch (DCCS) circuit of this nature requires both the true and complement phases of all input variables and provides the true and complement outputs for a desired function f. Here, the DCCS circuit provides a plurality of outputs if only the complement phase of the output functions is required. A typical DCCS decode circuit, such as the circuit in Fig. 1 which has a decode capability of "5", provides both phases of the output functions.