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Single-supply voltage translator input having low supply current

  • US 7,315,183 B2
  • Filed: 11/22/2004
  • Issued: 01/01/2008
  • Est. Priority Date: 11/22/2004
  • Status: Active Grant
First Claim
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1. A voltage translator connected between a first component having a first voltage supply and a second component having a second voltage supply, wherein the first voltage supply differs from the second voltage supply, the voltage translator couples to supply an operating output voltage for the second component, comprising:

  • a first inverter coupled between the input and a first node;

    a second inverter coupled between the first node and an output node;

    a third inverter coupled between the output node and a second node;

    a fourth inverter coupled between the second node and a third node;

    a first circuit portion coupled between the fourth inverter and first inverter that establishes the low-to-high switching point; and

    a second circuit portion coupled between the fourth inverter and the first inverter that blocks switching current from draining the second voltage supply after the transition from low-to-high has occurred.

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