Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Rectangular or pulse waveform width control
Patent
1997-03-20
1998-11-24
Callahan, Timothy P.
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Rectangular or pulse waveform width control
327 35, 327134, 326 87, H03K 3017
Patent
active
058413057
ABSTRACT:
A circuit provides a duty cycle adjustment through a gate delay for operation at various output voltage levels. The delay may be provided through an OR gate and an AND gate that will generally modulate the duty cycle received at the input since most of the strength of the predriver resides in the pullup and pulldown transistors. The circuit may operate at a number of output voltage levels, including, but not limited to, CMOS and TTL levels. The implementation of the circuit also provides the advantage of parasitic load matching that may reduce EMI.
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Callahan Timothy P.
Cypress Semiconductor Corp.
Englund Terry L.
Maiorana Christopher P.
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