Multiple-select multiplexer circuit, semiconductor memory...

Details Multiple-select multiplexer circuit, semiconductor memory... Multiple-select multiplexer circuit, semiconductor memory...

2006-06-20

2006-06-20

Hollington, Jermele (Department: 2829)

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

Of individual circuit component or element

C365S189020

Reexamination Certificate

active

07064571

ABSTRACT:
A multiplexer circuit is composed of several basic unit circuits, which are each supplied with a data signal and select signal. Each output terminal of several basic unit circuits is connected to a common line. Each basic unit circuit is composed of an unmatch detection circuit detecting an unmatch state of the common line and the data signal, a control circuit controlling drive timing of the common line when receiving a state transition of the select signal, and a tri-state buffer driving the common line according to a state of the data signal when an output of the unmatch detection circuit and an output of the control circuit are both in an active state while holds high impedance state when the state other than above is given.

REFERENCES:
patent: 4941126 (1990-07-01), Haubursin
patent: 6115301 (2000-09-01), Namekawa
patent: 6243317 (2001-06-01), Haga et al.
patent: 6529399 (2003-03-01), Namekawa et al.
patent: 6529406 (2003-03-01), Namekawa
patent: 2-235435 (1990-09-01), None

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