发明授权
US07199616B2 Method and apparatus to generate break before make signals for high speed TTL driver 有权
在高速TTL驱动器产生信号之前产生中断的方法和装置

  • 专利标题: Method and apparatus to generate break before make signals for high speed TTL driver
  • 专利标题(中): 在高速TTL驱动器产生信号之前产生中断的方法和装置
  • 申请号: US11000468
    申请日: 2004-11-29
  • 公开(公告)号: US07199616B2
    公开(公告)日: 2007-04-03
  • 发明人: Timothy Lu
  • 申请人: Timothy Lu
  • 申请人地址: US CA Fremont
  • 专利权人: Exar Corporation
  • 当前专利权人: Exar Corporation
  • 当前专利权人地址: US CA Fremont
  • 代理机构: Townsend and Townsend and Crew LLP
  • 主分类号: H03K19/094
  • IPC分类号: H03K19/094 H03H11/26
Method and apparatus to generate break before make signals for high speed TTL driver
摘要:
A driver includes, in part, a delay chain having disposed therein a multitude of accessible nodes, and a control logic coupled to the various nodes of the delay chain to generate the signals applied to the gate terminals of the PMOS and NMOS transistors disposed in the driver. The nodes that are accessed and tapped may or may not be the successive nodes disposed along the delay chain. Optionally four nodes of the delay chain are tapped to supply signals to the control logic. Two of the nodes, carrying in-phase signals, are tapped to generate a first signal, which is used to generate a second signal driving the NMOS transistor. The other two nodes, carrying in-phase signals, are tapped to generate a third signal, which is used to generate a fourth signal driving the PMOS transistor. The first signal is 180° out-of-phase with respect to the third signal.
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