发明授权
US07046036B2 Output buffer with low-voltage devices to driver high-voltage signals for PCI-X applications
失效
具有低电压设备的输出缓冲器，用于PCI-X应用的驱动器高电压信号
- 专利标题： Output buffer with low-voltage devices to driver high-voltage signals for PCI-X applications
- 专利标题（中）： 具有低电压设备的输出缓冲器，用于PCI-X应用的驱动器高电压信号
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申请号： US10790733申请日： 2004-03-03
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公开(公告)号： US07046036B2公开(公告)日： 2006-05-16
- 发明人: Shih-Lun Chen , Ming-Dou Ker
- 申请人： Shih-Lun Chen , Ming-Dou Ker
- 申请人地址： TW Hsinchu
- 专利权人： ADMtek Incorporated
- 当前专利权人： ADMtek Incorporated
- 当前专利权人地址： TW Hsinchu
- 代理机构： Troxell Law Office, PLLC
- 优先权： TW92132205A 20031118
- 主分类号： H03K19/02
- IPC分类号： H03K19/02
摘要：
An output buffer circuit with low-voltage devices to driver high-voltage signals for PCI-X applications is proposed. Because power supply voltage of PCI-X is at 3.3V, the high-voltage gate-oxide stress is a serious problem to design PCI-X I/O circuit in a 0.13 μm 1V/2.5V CMOS process with only low-voltage gate oxide. This proposed output buffer circuit can be operated at 133 MHz in 3.3V PCI-X environment without causing high-voltage gate-oxide reliability problem. In this design, the circuit is implemented in a 0.13 μm 1V/2.5V CMOS process and the output signal swing can be 3.3V. Besides, a level converter that converts 0V˜1V voltage swing to 1V˜3.3V voltage swing is also presented.
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