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专利名称：CMOS off-chip driver circuit发明人：Adams, Robert D.,Flaker, Roy C.,Gray,
Kenneth S.,Kalter, Howard L.
申请号：EP88110295.8申请日：19880628公开号：EP0305676A2公开日：190308
专利附图：
摘要：A CMOS off-chip driver circuit is provided which includes a first P-channel fieldeffect transistor (32) arranged in series with a second or pull-up P-channel transistor (30)and a third P-channel transistor (36) connected from the common point (B) between the
first and second transistors (32, 30) and the gate electrode of the first transistor (32). Thefirst and second transistors (32, 30) are disposed between a data output terminal (24) anda first voltage source (28) having a supply voltage of a given magnitude, with the dataoutput terminal (24) also being connected to a circuit or system including a secondvoltage source having a supply voltage of a magnitude significantly greater than that ofthe given magnitude. In a more specific aspect of this invention, a fourth P-channeltransistor (38), disposed in a common N-well (40) with the other P-channel transistors, isconnected at its source to the first voltage source (28) and at its drain to the common N-well, with its gate electrode being connected to the data output terminal.
申请人：International Business Machines Corporation
地址：Old Orchard Road Armonk, N.Y. 10504 US
国籍：US
代理机构：Gaugel, Heinz (DE)
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