| 摘要 |
PURPOSE: An electrostatic discharge circuit is provided to prevent the destruction of an internal circuit by operating an electro-static discharge prevention circuit even when a power voltage is changed minutely. CONSTITUTION: In an electrostatic discharge circuit, a first controller(310) comprises diode chains(311~314) connected between a first voltage terminal(301) and a first control node and also includes a first control resistor. The first control resistor is connected between the first control node and the second voltage terminal(302). A second controller(320) comprises a first NMOS transistor(321) and a second resistor which is connected between the second control node and the second voltage terminal. A discharge unit(330) flows discharge current from the first voltage terminal to the second voltage terminal. The drain of the discharge unit is connected to the first voltage terminal.
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