Improved Differential Current Switch Receiver
Original Publication Date: 1986-May-01
Included in the Prior Art Database: 2005-Mar-09
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.