High voltage driver circuit with fast slow voltage operation

Details High voltage driver circuit with fast slow voltage operation High voltage driver circuit with fast slow voltage operation

2005-02-08

2010-06-29

Donovan, Lincoln (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Current driver

C327S108000, C326S082000, C326S084000

Reexamination Certificate

active

07746125

ABSTRACT:
A high voltage driver circuit for devices such as non-volatile memories, in which a low voltage driver is combined in two different ways with a high voltage driver In one, input-independent embodiment, a low voltage driver (Q7, Q8) is connected directly in parallel with a high voltage driver, thereby providing a high voltage signal path for high voltage operations and a low voltage signal path for low voltage operations. In an alternative, partially input-dependent embodiment, a low voltage driver is connected to the output of a high voltage driver (Q9, Q10), which may comprise a partial level shifter (Q1B Q6). The output of this low voltage driver (Q9, Q10), which forms the output terminal of the entire stage, has a pull up/pull down transistor (Q11), depending on whether the partial level shifter (Q1B Q6) is a positive or negative level shifting high voltage driver.

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