Supply voltages switch circuit

Details Supply voltages switch circuit Supply voltages switch circuit

1998-07-02

2000-03-21

Wells, Kenneth B.

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

327423, 327424, 327588, H02J 338

Patent

active

060407344

ABSTRACT:
A circuit for switching between supply voltages and in particular for non-volatile flash memory devices and of the type comprising a first and a second circuit branch each incorporating a pair of transistors connected in series provides that at least one branch of the circuit be structured with a bridge circuit made up of P-channel MOS transistors. The bridge is made of a first and a second pairs of transistors connected between a first supply voltage reference and a common node. The first pair comprises transistors bigger than the transistors of the second pair while between the transistors making up the second pair is inserted a pair of resistors. Between the pair of resistors there is an interconnection node connected to a corresponding interconnection node between the transistors of the first pair.

REFERENCES:
patent: 4441035 (1984-04-01), Demetriou
patent: 5008566 (1991-04-01), Hashimoto
patent: 5210475 (1993-05-01), Juzswik et al.
patent: 5296757 (1994-03-01), Koizumi
patent: 5426396 (1995-06-01), Bee
patent: 5457414 (1995-10-01), Inglis et al.

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