Electronic digital logic circuitry – Interface – Logic level shifting
Reexamination Certificate
2006-06-08
2008-09-23
Barnie, Rexford (Department: 2819)
Electronic digital logic circuitry
Interface
Logic level shifting
C326S063000, C326S081000, C327S333000
Reexamination Certificate
active
07427877
ABSTRACT:
A level shift circuit that shifts both the high potential level and the low potential level of an input voltage, a micro actuator and an optical switch using such a level shift circuit are disclosed. A CMOS inverter11connected to a +5 V power source and a 0 V power source provides, in response to an input signal, an output voltage whose H level is +5 V and whose L level is 0 V. A single channel MOS inverter12connected to a +15 V power source and the 0 V power source provides, in response to the output voltage of the CMOS inverter11, an output voltage whose H level is +15 V and whose L level is 0 V. A single channel MOS inverter13connected to the +15 V power source and a −15 V power source provides an output voltage whose H level is +15 V and whose L level is −15 V. The inverter12has an NMOS transistor Q4as a drive element. The inverter13has a PMOS transistor Q5of the opposite conduction type as a drive element.
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Barnie Rexford
Klarquist & Sparkman, LLP
Nikon Corporation
Tran Thienvu V
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