Output buffer for memory circuit

Details Output buffer for memory circuit Output buffer for memory circuit

1997-12-30

1999-09-28

Wells, Kenneth B.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Current driver

327391, 327437, 326 83, H03K 300

Patent

active

059594748

ABSTRACT:
An output buffer circuit comprising a pull-up transistor, a pull-down transistor coupled to the pull-up transistor, a first voltage source for supplying a driving voltage, a second voltage source for supplying a reference voltage, a device for comparing the driving voltage with the reference voltage, a driving voltage detector for producing a signal in response to operation of the comparing device, first and second pull-up driving buffers, the first and second pull-up driving buffers being activated according to the signal from the driving voltage detector, the pull-up transistor being driven by one of the pull-up driving buffers, and first and second pull-down driving buffers, the first and second pull-down driving buffers being activated according to the signal from the driving voltage detector, and the pull-down transistor being driven by one of the pull-down driving buffers.

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patent: 5627487 (1997-05-01), Keeth

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