Word line decoder suitable for low operating voltage of...

Details Word line decoder suitable for low operating voltage of... Word line decoder suitable for low operating voltage of...

2008-07-08

2008-07-08

Luu, Pho M. (Department: 2824)

Static information storage and retrieval

Addressing

Sync/clocking

C365S230030, C365S230060, C365S226000

Reexamination Certificate

active

11481363

ABSTRACT:
Provided is a word line decoder suitable to a low operating voltage of a flash memory device. The word line decoder generates a block word line driving signal of a high voltage in response to a block selection signal. The word line decoder includes a first inverter receiving the block selection signal, a second inverter receiving an output of the first inverter, and first and second serially connected transistors receiving an output of the second inverter and outputting the block word line driving signal. The gates of the first and second transistors are connected to a supply voltage terminal. The word line decoder includes a third transistor having a source connected to a high voltage terminal and a gate connected to a line transmitting the block word line driving signal, a fourth transistor connected between the drain of the third transistor and the block word line driving signal line, a fifth transistor connected between the drain of the third transistor and the gate of the fourth transistor and having a gate connected to the block word line driving signal line, and a sixth transistor connected between the output of the first inverter and the gate of the second transistor and having a gate connected to the supply voltage terminal.

REFERENCES:
patent: 6621735 (2003-09-01), Nakamura et al.
patent: 7123528 (2006-10-01), Jeong et al.
patent: 7286402 (2007-10-01), Nakamura et al.
patent: 11-232883 (1999-08-01), None
patent: 2001-102916 (2001-04-01), None

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