Electrostatic discharge (ESD) protection circuit for multiple power domain integrated circuit
    1.
    发明申请
    Electrostatic discharge (ESD) protection circuit for multiple power domain integrated circuit 有权
    多功率集成电路的静电放电(ESD)保护电路

    公开(公告)号:US20070097581A1

    公开(公告)日:2007-05-03

    申请号:US11264557

    申请日:2005-11-01

    IPC分类号: H02H3/22

    摘要: An integrated circuit (300/400) includes first and second power domains and a bank of input/output (I/O) cells (305/405) coupled to the first and second power domains. The bank of I/O cells (305/405) includes a first plurality of active clamps (374/445) for the first power domain and a second plurality of active clamps (384/425) for the second power domain wherein the first (374/445) and second (384/425) pluralities of active clamps overlap along the bank of I/O cells. According to one aspect each of the plurality of input/output cells (420, 440) has a bonding pad (421, 441) for receiving an output signal referenced to a respective first power domain, and at least one ESD protection element (425, 445) for a respective second power domain. According to another aspect, each of the plurality of input/output cells (420, 440) has a bonding pad (421, 441) for receiving a respective output signal and at least one ESD protection element for each of a first power domain and a second power domain.

    摘要翻译: 集成电路(300/400)包括耦合到第一和第二电源域的第一和第二电源域和一组输入/输出(I / O)单元(305/405)。 I / O单元组(305/405)包括用于第一功率域的第一多个有源钳位(374/445)和用于第二功率域的第二多个有源钳位(384/425),其中第一( 374/445)和第二(384/425)个多个有源钳位沿I / O单元组重叠。 根据一个方面,多个输入/输出单元(420,440)中的每一个具有用于接收参考相应的第一功率域的输出信号的接合焊盘(421,441)和至少一个ESD保护元件(425,440) 445)用于相应的第二功率域。 根据另一方面,多个输入/输出单元(420,440)中的每一个具有用于接收相应输出信号的接合焊盘(421,441)和用于第一功率域和第一功率域中的每一个的至少一个ESD保护元件 第二功率域。