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US 7,679,409 B2Granted
Semiconductor device having input circuit with auxiliary current sink
AssigneeHynix Semiconductor Inc.
InventorsMi Hye Kim, Jae Jin Lee
Life of this patent
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Abstract
A semiconductor device stabilizes an operation of an input buffer. A semiconductor device includes an input potential detection unit outputting a detection signal in response to a level of an input signal. An input buffer buffers the input signal by performing a differential amplifying operation through a first current sink unit. A second current sink unit, sharing an output with the input buffer, differentially amplifies the input signal of the input buffer in response to a level of the detection signal.
Claims20
A semiconductor device, comprising:
- an input potential detection unit receiving an input signal and outputting a detection signal in response to a level of the input signal;
- an input buffer receiving the input signal and buffering the input signal by performing a differential amplifying operation through a first current sink unit;
- and
- a second current sink unit having a common output with the input buffer and differentially amplifying the input signal of the input buffer in response to a level of the detection signal.
1 more element
A semiconductor device, comprising:
- an input potential detection unit outputting a detection signal in response to a level of an input signal;
- and
- an input buffer differentially amplifying and outputting the input signal and selectively providing auxiliary differential amplification of a signal outputted in response to a level of the detection signal.
Dependencies are inferred from the claim text.