Semiconductor device for automatically detecting external interf

Details Semiconductor device for automatically detecting external interf Semiconductor device for automatically detecting external interf

1997-10-29

1999-10-26

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Current driver

327 77, 326 87, H03B 100

Patent

active

059735210

ABSTRACT:
A semiconductor device for automatically detecting an external interface voltage is disclosed, including a voltage converter for receiving an external interface voltage, and decreasing the external interface voltage value, and a voltage comparator for comparing the voltage outputted from the voltage converter with the internal supply voltage of a semiconductor chip. The semiconductor device automatically detects an external interface voltage environment where the semiconductor chip is used, and also automatically controls the magnitude of output buffer of the semiconductor chip according to the detected external interface voltage value, to prevent the operation speed from being deterioration.

REFERENCES:
patent: 5280198 (1994-01-01), Almulla
patent: 5532620 (1996-07-01), Seo et al.

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