US 6,661,252 B2Granted

Matrix switch device high in isolation between terminals thereof, small in size, and low in manufacturing cost

AssigneesNEC Compound Semiconductor Devices, Ltd., Sharp Kabushiki Kaisha

InventorsNobuo Nagano, Kazuhiko Onda, Junichi Somei

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Abstract

A matrix switch device comprises a semiconductor integrated circuit chip comprising a 2×2 matrix switch having two input terminals and two output terminals and an SPDT switch at a stage subsequent to the 2×2 matrix switch, the SPDT switch having two input terminals and one output terminal, wherein electrical connection is performed between one of the output terminals of the 2×2 matrix switch and one of the input terminals of the SPDT switch, and wherein the two input terminals and the other of said output terminals of the 2×2 matrix switch, and the other input terminal and the output terminal of the SPDT switch are led out of the semiconductor integrated circuit chip.

Claims8

Dependent claims

A matrix switch device comprising a 2×2 matrix switch having two input terminals and two output terminals;

said matrix switch device further comprising an SPDT (Single Pole Double Throw) switch arranged at a stage subsequent to said 2×2 matrix switch, said SPDT switch having two input terminals and one output terminal;
said 2×2 matrix switch and said SPDT switch being structured in a semiconductor integrated circuit chip so as to unite with each other;
one of said output terminals of said 2×2 matrix switch and one of said input terminals of said SPDT switch are electrically connected with each other;
both of said input terminals of the 2×2 matrix switch, the other of said output terminals of the 2×2 matrix switch, the other of said input terminals of said SPDT switch, and said output terminal of said SPDT switch being led out of said semiconductor integrated circuit chip.

1 more element

Dependencies are inferred from the claim text.