公开(公告)号：US09000799B1

公开(公告)日：2015-04-07

申请号：US14043565

申请日：2013-10-01

Applicant: Texas Instruments Incorporated

Inventor： Devraj Matharampallil Rajagopal ,  Rajagopalan P

IPC: H03K19/007 ,  H03K19/0185

CPC classification number: H03K19/007 ,  H03K19/018521

Abstract: An input/output (IO) circuit powered by an input/output (IO) supply voltage. The IO circuit includes a supply detector cell that detects a core supply voltage and generates a supply detect signal. A driver circuit is connected to a PAD and the driver circuit receives the supply detect signal. A failsafe circuit receives a PAD voltage. The failsafe circuit and the supply detector cell controls a leakage current from the PAD based on the IO supply voltage and the PAD voltage.

Abstract translation: 由输入/输出（IO）电源电压供电的输入/输出（IO）电路。 IO电路包括检测核心电源电压并产生电源检测信号的电源检测器单元。 驱动电路连接到PAD，驱动电路接收电源检测信号。 故障保护电路接收PAD电压。 故障保护电路和电源检测器单元根据IO电源电压和PAD电压控制来自PAD的漏电流。