Electrostatic discharge protection device and electrostatic discharge detector circuit

An electrostatic discharge protection device, comprising:

• a voltage divider circuit configured to output N−1 bias voltages according to a first voltage and a second voltage that are different from each other, wherein N is a positive integer greater than or equal to 2;
• a detector circuit configured to detect an electrostatic discharge event according to a voltage level of a predetermined node associated with the first voltage and the second voltage, and to generate N control signals according to the first voltage, the second voltage, and the N−1 bias voltages, wherein when the electrostatic discharge event occurs, voltage levels of the N control signals are the same as the first voltage, wherein the detector circuit comprises:
• a resistive component configured to receive the first voltage;
• and N coupling components configured to receive the second voltage, wherein the N coupling components are coupled in series, and the N coupling components in series are coupled to the resistive component at the predetermined node, wherein two adjacent coupling components of the N coupling components are directly connected to each other at one of N−1 nodes, and the one node at which the two adjacent coupling components are directly connected to each other is configured to receive one of the N−1 bias voltages;
• and a clamping circuit configured to be turned on according to the N control signals when the electrostatic discharge event occurs, in order to provide a discharging path for a current associated with the electrostatic discharge event, wherein the detector circuit further comprises:
• N multiplexers configured to output the first voltage, or to output N−1 bias voltages and the second voltage respectively, as the N control signals according to the voltage level of the predetermined node.