Data output buffer
AssigneeSK hynix Inc.
InventorsJin Ha HWANG, Keun Seon AHN
Life of this patent
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Abstract
A data output buffer includes a pull-up main driver outputting output data having a high level through an output pad by performing an emphasis operation according to input data, a pull-down main driver outputting the output data having a low level through the output terminal according to the input data, an active inductor controller selectively outputting an inductor activating voltage by detecting a rising or falling period of the input data, and an active inductor selectively performing a de-emphasis operation on the output terminal in response to the inductor activating voltage.
Claims20
A data output buffer, comprising:
- a pull-up main driver outputting output data having a high level through an output pad by performing an emphasis operation according to input data;
- a pull-down main driver outputting the output data having a low level through the output terminal according to the input data;
- an active inductor controller selectively outputting an inductor activating voltage by detecting a rising or falling period of the input data;
- and
- an active inductor selectively performing a de-emphasis operation on the output terminal in response to the inductor activating voltage.
A data output buffer, comprising:
- a pull-up pre-driver outputting a pull-up code by calibrating a pull-up pulse;
- a pull-down pre-driver outputting a pull-down code by calibrating a pull-down pulse;
- an active inductor controller selectively outputting an inductor activating voltage by detecting the pull-up code and the pull-down pulse and detecting the pull-down code and the pull-up pulse;
- and
- an active inductor selectively performing a de-emphasis operation to reduce a potential of an output terminal in response to the inductor activating voltage.
Dependencies are inferred from the claim text.