Miscellaneous active electrical nonlinear devices – circuits – and – Gating – Signal transmission integrity or spurious noise override
Reexamination Certificate
2005-04-12
2005-04-12
Ton, My-Trang Nu (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Gating
Signal transmission integrity or spurious noise override
C327S112000, C326S030000
Reexamination Certificate
active
06879205
ABSTRACT:
An output buffer includes a pair of main complimentary MOS transistors connected to at least one additional pair of complementary MOS transistors connected in parallel to the pair of main transistors by means of a pair of switches controlled by a numeric word for activating or not activating the additional pair of transistors. A control circuit delivers the numeric word which represents the conductivity of the pair of main transistors included in the output buffer. The additional transistors are sized in such a way that when they are activated, the equivalent impedance of the output buffer is approximately constant.
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French Search Report, FA 617687/FR 0205005, dated Mar. 19, 2003.
Jenkens & Gilchrist PC
Nu Ton My-Trang
STMicroelectronics S.A.
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