Pull-down access for an output buffer

Details Pull-down access for an output buffer Pull-down access for an output buffer

1994-10-05

1996-07-09

Wambach, Margaret Rose

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Slope control of leading or trailing edge of rectangular or...

327377, 327407, 327333, H03K 512, H03K 1704

Patent

active

055348068

ABSTRACT:
A pull-down output device controls the discharge of an output signal for a pull-down transition. A pull-down control signal is generated in response to an input signal. A control signal is generated in response to the pull-down control signal to couple a first voltage terminal to a control signal node. The output signal is initially discharged as a bipolar transistor is turned-on by the control signal at the node and couples the output signal to a second voltage terminal. The first voltage terminal is decoupled from the control signal node as a control signal is generated to couple the output signal to the control signal node. The output signal is further discharged through the bipolar transistor. The discharge of the output signal is thus controlled.

REFERENCES:
patent: 5315172 (1994-05-01), Reddy
patent: 5329175 (1994-07-01), Peterson
patent: 5410262 (1995-04-01), Kang

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