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Improved Differential Current Switch Receiver

IP.com Disclosure Number: IPCOM000060729D
Original Publication Date: 1986-May-01
Included in the Prior Art Database: 2005-Mar-09

Publishing Venue

IBM

Related People

Authors:
Chu, WM Russo, VW [+details]

Abstract

Differential current switches (DSCs) are well known circuits, used in VLSI chips, for example. When used in VLSI chips, these circuits frequently must receive and process signals coming from off-chip. To ensure that the proper signal level is presented to the circuit, even in the event of a low level signal coming in from off-chip, receiver circuits are used to boost and normalize incoming signal levels. Conventional DSC receivers accept only one signal from off-chip, such as shown in the circuit in Fig. 1. This often presents a problem at a higher level of packaging, in that under these conditions the receiver becomes a non-functional block. The improvement afforded by this invention, shown in Fig. 2, allows the receiver to accept multiple inputs and perform logic on them.