Output driver circuit for restraining generation of noise and se

Details Output driver circuit for restraining generation of noise and se Output driver circuit for restraining generation of noise and se

1994-10-28

1996-12-10

Cunningham, Terry D.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Generating staircase output

327108, 327170, 327313, 327382, 327391, 326 24, 326121, H03K 1730

Patent

active

055834604

ABSTRACT:
An improved output driver circuit for a semiconductor integrated circuit device, wherein a stepped control voltage generation circuit is connected to the gate of a driving transistor for driving an output terminal DQ. The stepped control voltage generation circuit responds to an applied input data signal to provide a stepped control voltage changing in a stepped form including a plurality of steps to the gate of the driving transistor. The driving transistor therefore changes its state on a step by step basis from a cut off state to a conduction state. Thus, sharp change in output current flowing through the output terminal can be prevented, and noise caused by a parasitic inductance can be avoided, thus preventing an erroneous operation in the device.

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