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Injection Current Switch Logic

IP.com Disclosure Number: IPCOM000053908D
Original Publication Date: 1981-Nov-01
Included in the Prior Art Database: 2005-Feb-12

Publishing Venue

IBM

Related People

Authors:
Berger, HH [+details]

Abstract

The logic circuit, based on a current switch, receives its power via PN transistors, the emitters and bases of which are connected in parallel. The current sinks are formed by NPN transistors controlled by an additional PNP transistor T8 of the power supply circuit. The reference voltage Vref of the current switch equals the base voltage of the PNP transistors of the power supply circuit.