Output buffer circuit eliminating high voltage insulated...

Details Output buffer circuit eliminating high voltage insulated... Output buffer circuit eliminating high voltage insulated...

2006-05-02

2006-05-02

Ton, My-Trang Nu (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Current driver

Reexamination Certificate

active

07038504

ABSTRACT:
A novel output buffer circuit including an input circuit, a voltage generating circuit, and an output circuit forms a three-state buffer circuit. The output circuit includes a first transistor, a second transistor, a third transistor, and a fourth transistor. With such a configuration, a simple circuit using no high voltage insulated transistors and level shift circuits can be made, and the simple circuit can output either a low voltage signal or a high voltage signal responsive to a low voltage input signal, reduce the manufacturing cost and the delay of the risetime of the output signal, which are associated with a high voltage insulated transistor. Furthermore, cost can be reduced by miniaturization of the circuit size.

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