Patent ID: 9607978
Date: 2017-03-28
CPC Classifications: H01L

Claim:
1. An integrated circuit device comprising: a supply voltage connection; an open drain output connection; and an open drain output driver cell having electro-static discharge protection, comprising: an N− well; a first P− body diffused in the N− well, wherein the first P− body comprises a first P+ diffusion and a first N+ diffusion; a second P− body diffused in the N− well, wherein the second P− body comprises a second P+ diffusion and a second N+ diffusion; a first gate and a first insulating oxide over a portion of the first P-body and a portion of the N− well, wherein the first gate provides for control of the output driver cell; a second gate and a second insulating oxide over a portion of the second P-body and a portion of the N-well; a source and body contact coupled with the supply voltage connection and comprising the first P+ diffusion and the first N+ diffusion connected together; and wherein the second P+ diffusion, the second N+ diffusion and the second gate are connected together and connected with the open drain output connection; wherein an electro-static discharge (ESD) and reverse voltage protection diode is formed between the first and second P− bodies.