发明授权
- 专利标题: Level shifter circuits and methods for maintaining duty cycle
- 专利标题(中): 电平移位器电路和维持占空比的方法
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申请号: US12350172申请日: 2009-01-07
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公开(公告)号: US07868658B1公开(公告)日: 2011-01-11
- 发明人: Xiao Yu Miao
- 申请人: Xiao Yu Miao
- 申请人地址: BM Hamilton
- 专利权人: Marvell International Ltd.
- 当前专利权人: Marvell International Ltd.
- 当前专利权人地址: BM Hamilton
- 主分类号: H03K19/094
- IPC分类号: H03K19/094 ; H03K19/0175
摘要:
A circuit comprises first and second buffers, and an output buffer. The first buffer receives an input signal and provides a first buffer output signal on a first lead. The second buffer receives the input signal and provides a second buffer output signal on a second output lead. The output buffer has a first input lead coupled to the first output lead and AC coupled to the second output lead. The AC coupling communicates timing information from the second buffer to the output buffer. The first buffer applies sufficient voltage to control the first input lead of the output buffer under DC conditions.