发明授权
- 专利标题: Front-end circuit with electro-static discharge protection
- 专利标题(中): 前端电路采用静电放电保护
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申请号: US13221219申请日: 2011-08-30
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公开(公告)号: US09136690B1公开(公告)日: 2015-09-15
- 发明人: Parag Upadhyaya , Mark J. Marlett
- 申请人: Parag Upadhyaya , Mark J. Marlett
- 申请人地址: US CA San Jose
- 专利权人: XILINX, INC.
- 当前专利权人: XILINX, INC.
- 当前专利权人地址: US CA San Jose
- 代理商 LeRoy D. Maunu
- 主分类号: H02H1/06
- IPC分类号: H02H1/06
摘要:
A termination circuit configured to provide electrostatic discharge (ESD) protection is provided. Termination sub-circuits are coupled in parallel, each including respective pull-up and pull-down circuits. Each pull-up circuit has two transistors of a first type coupled in series between a data input and Vdd, a gate of one of the two transistors being coupled to a control input and a gate of the other one of the two transistors being coupled to a first enable input of the termination sub-circuit. Each pull-down circuit has two transistors of a second type coupled in series between the data input and Vss or ground, a gate of one of the two transistors being coupled to the control input and the gate of the other one of the two transistors being coupled to a second enable input of the termination sub-circuit.
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