发明授权
US06459331B1 Noise suppression circuit, ASIC, navigation apparatus communication circuit, and communication apparatus having the same
失效
噪声抑制电路，ASIC，导航装置通信电路和具有该噪声抑制电路的通信装置
- 专利标题： Noise suppression circuit, ASIC, navigation apparatus communication circuit, and communication apparatus having the same
- 专利标题（中）： 噪声抑制电路，ASIC，导航装置通信电路和具有该噪声抑制电路的通信装置
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申请号： US09146035申请日： 1998-09-02
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公开(公告)号： US06459331B1公开(公告)日： 2002-10-01
- 发明人: Hideki Takeuchi , Masami Murakata , Masaaki Yamada , Reiko Nojima , Takashi Ishioka , Mutsunori Igarashi
- 申请人： Hideki Takeuchi , Masami Murakata , Masaaki Yamada , Reiko Nojima , Takashi Ishioka , Mutsunori Igarashi
- 优先权： JP9-237303 19970902; JP9-247202 19970911; JP10-079156 19980326
- 主分类号： H03K500
- IPC分类号： H03K500
摘要：
A noise suppression circuit encompasses an internal circuit, a bypass capacitor, first and second transistors. The internal circuit has high and low level terminals, and the low level terminal is connected to a low level power supply line. The internal circuit is supplied with enable and inverted enable signals. The first transistor has a first control electrode, and one main electrode is connected to the high level terminal. The first control electrode is supplied with the inverted enable signal. The bypass capacitor is connected between the other main electrode of the first transistor and the low level power supply line. The second transistor is connected between the other main electrode of the first transistor and a high level power supply line. The second transistor has a second control electrode supplied with the enable signal. The second transistor is not conductive when the internal circuit is active.
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