Electronic digital logic circuitry – Interface – Supply voltage level shifting
Patent
1997-06-30
2000-05-23
Tokar, Michael
Electronic digital logic circuitry
Interface
Supply voltage level shifting
326 81, 326 80, 326 83, 326 86, 326 87, 326 68, 326 31, 326 33, H03K 1716, H03K 19175
Patent
active
060669624
ABSTRACT:
The present invention provides digital integrated circuits, buffers, digital devices and methods for buffering data. One embodiment of the digital integrated circuit comprises: a data input configured to receive an input signal at a first voltage; a data output configured to output an output signal at a second voltage; a controller coupled with the data input and the controller being configured to generate an internal control signal and an external control signal responsive to the input signal; the controller having a first voltage regulator configured to maintain the external control signal above a threshold and a feedback voltage regulator configured to maintain the internal control signal above a threshold; and an output driver coupled with the data output and the controller, the output driver being configured to apply the output signal to the data output responsive to the external control signal.
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Shiffer, II James D.
Wong Jeffrey F.
Tan Vibol
Tokar Michael
VLSI Technology Inc.
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