发明名称 |
Soft wakeup output buffer. |
摘要 |
<p>To prevent supply and ground voltage variations, the buffers are provided with means for operating in a slow response (high slew) mode. A slew rate control circuit moves the buffer to slow response mode in response to the high impedance signal. When the slew rate control circuit receives a signal ending the high impedance state of the buffer, it applies a delay to this signal, and after the delay time allows the buffer to move to a fast response mode. The slow buffer response and resulting slow voltage change when high capacitance terminals move to a new logic state prevents fluctuation of power or ground voltage in response to simultaneous switching of many terminals.</p> |
申请公布号 |
EP0611161(A2) |
申请公布日期 |
1994.08.17 |
申请号 |
EP19940300993 |
申请日期 |
1994.02.11 |
申请人 |
XILINX, INC. |
发明人 |
PIERCE, KERRY M.;ERICKSON, CHARLES R. |
分类号 |
H03K19/173;H03K17/16;H03K17/687;H03K19/003;H03K19/0175;(IPC1-7):H03K19/003 |
主分类号 |
H03K19/173 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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