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US 2008/0074815 A1Published application
Electrostatic discharge protection circuit
AssigneeWisepal Technologies, Inc.
InventorYen-Hui Wang
Life of this patent
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Abstract
An electrostatic discharge (ESD) protection circuit is provided. The circuit includes at least one fuse cell and a metal oxide semiconductor field effect transistor (MOSFET). Each of the fuse cells includes a fuse and outputs a bit data according to whether the fuse is melted or not. The MOSFET has a first terminal coupled to each of the fuse cells and a second terminal coupled to a voltage source. The MOSFET is for absorbing an ESD pulse so that the ESD pulse won't melt any one of the fuses.
Claims19
An electrostatic discharge (ESD) protection circuit, comprising:
- a fuse cell, comprising a fuse, for outputting a bit data according to whether or not the fuse being melted;
- and
- a first metal oxide semiconductor field effect transistor (MOSFET), coupled between the fuse cell and a first voltage source, for absorbing an ESD pulse to prevent the ESD pulse from melting the fuse.
An ESD protection circuit, comprising:
- a plurality of fuse cells, each of the fuse cells comprising a fuse, for outputting a bit data according to whether or not the fuse being melted;
- and
- a first MOSFET, having a first terminal coupled to the fuse cells and a second terminal coupled to a first voltage source, for absorbing an ESD pulse to prevent the ESD pulse from melting any one of the fuses.
Dependencies are inferred from the claim text.