| 摘要 |
ESD protection circuit which can effectively protect a product with three or two leveled electrodes in any cases when an external (+) or (-) ESD charge flows into the product, including, in case of the ESD protection circuit for a product with three leveled electrodes(VP, VDD and GND), a first conduction type bipolar transistor and a second conduction type bipolar transistor connected in parallel between an input terminal and a GND, wherein the first conduction type bipolar transistor has a base terminal with a VP voltage applied thereto and the second conduction type bipolar transistor having a base terminal with a VDD voltage applied thereto, and collectors and emitters thereof connected to the input terminal or the GND.
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