Output circuit of semiconductor integrated circuit device

Details Output circuit of semiconductor integrated circuit device Output circuit of semiconductor integrated circuit device

2005-01-18

2005-01-18

Chang, Daniel D. (Department: 2819)

Electronic digital logic circuitry

Signal sensitivity or transmission integrity

Output switching noise reduction

C326S087000, C327S170000

Reexamination Certificate

active

06844753

ABSTRACT:
This invention provide a new and improved output circuit of a semiconductor integrated circuit device that enables output of a slew-rate waveform with a desired gradient without generating unwanted delay and also enables reduction in switching noise. According to this invention, an output circuit of a semiconductor integrated circuit device for controlling the gradient of an output waveform of a CMOS output transistor using first and second variable resistance units (transfer gates) controlled by a signal of an input part has another CMOS output circuit for delaying rise of a gate by dividing an output part and connecting first and second resistance units (NMOS transistor and PMOS transistor) to the gates.

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patent: 6441653 (2002-08-01), Spurlin
patent: 6559676 (2003-05-01), Tomita
patent: 04337923 (1992-11-01), None
patent: 05218847 (1993-08-01), None
patent: 09148909 (1997-06-01), None
patent: 10290154 (1998-10-01), None

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