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Three to Five Volt Off Chip Driver Interface Circuit

IP.com Disclosure Number: IPCOM000040999D
Original Publication Date: 1987-May-01
Included in the Prior Art Database: 2005-Feb-02

Publishing Venue

IBM

Related People

Authors:
Flaker, RC Thoma, EP [+details]

Abstract

An interface circuit is described for use between a 3.3 volt technology off chip driver (OCD) and a 5.5 volt data bus. The OCD is comprised of thin gate oxide field effect transistors (FETs) using a 3.3 volt high supply (Vdd). The interface circuit permits use of this OCD FET circuit in the environment of the 5.5 volt bus without exposing the FET devices to damage from excessive voltage stress.