Semiconductor speech channel switch

Details Semiconductor speech channel switch Semiconductor speech channel switch

H - Electricity

04

Q

344/54

H04Q 3/52 (2006.01) H03K 17/735 (2006.01)

Patent

CA 1047635

-- ABSTRACT OF THE DISCLOSURE A semiconductor speech path switch selectively connects transmitting circuit which is connected with a row line to one of a plurality of receiving circuits which are respectively connected with associated column lines, the row e lines and column lines forming a matrix of signal transmission lines. The switch includes a plurality of PNPN switching elements respectively connected across row and column lines of the matrix, a plurality of diodes for triggering the respective switching elements and a plurality of control gate lines connected with the diodes for triggering wach switching element. Control signals are applied to input terminals of respective switching circuits to selectively energize the individual PNPN switching elements during the presence of a control signal supplied thereto. In the absence of the control signal, the control gate lines are shuntted to ground to prevent cross-talk interference and erroneous triggering of non-selected PNPN switching elements. --

242587

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