Level shifter and operating method of level shifter

A level shifter comprising:

• an input block configured to receive an input voltage swinging between a first ground voltage and a first power supply voltage, and to connect one node of a first node and a second node of the input block to a first ground node at which the first ground voltage is supplied, in response to the input voltage;
• a shifting block configured to store complementary voltage levels swinging between a second ground voltage and a second power supply voltage at a third node and a fourth node of the shifting block, and to mutually exchange the complementary voltage levels of the third and fourth nodes with each other in response to a current flowing through the one node;
• a pulse generator configured to generate a first pulse and a second pulse in response to the input voltage;
• a first transistor configured to directly connect the third node to the first ground node in response to the first pulse;
• and
• a second transistor configured to directly connect the fourth node to the first ground node in response to the second pulse,
• wherein the shifting block comprises:
• a first shifting block transistor operating in response to the second ground voltage and connected between the first node and the third node;
• a second shifting block transistor operating in response to the second ground voltage and connected between the second node and the fourth node;
• a third shifting block transistor connected between the third node and a second ground node to which the second ground voltage is supplied, and having a gate connected with the second ground node;
• a fourth shifting block transistor connected between the fourth node and the second ground node, and having a gate connected with the second ground node;
• a fifth shifting block transistor connected between a second power node to which the second power supply voltage is supplied and the third node, and having a gate connected with the fourth node;
• and
• a sixth shifting block transistor connected between the second power node and the fourth node, and having a gate connected with the third node.

A level shifter comprising:

• an input block configured to receive an input voltage swinging between a first ground voltage and a first power supply voltage, and to connect one node of a first node and a second node of the input block to a first power node at which the first power supply voltage is supplied in response to the input voltage;
• a shifting block connected to the first node through a first shifting block transistor and to the second node through a second shifting block transistor, the shifting block configured to store complementary voltage levels swinging between a second ground voltage and a second power supply voltage at a third node and a fourth node of the shifting block, and to mutually exchange the complementary voltage levels of the third and fourth nodes with each other in response to a current flowing through the one node, wherein the shifting block further comprises a first diode connected between the third node and gates of the first and second shifting block transistors and a second diode connected between the fourth node and the gates of the first and second shifting block transistors;
• a pulse generator configured to generate a first pulse and a second pulse in response to the input voltage;
• a first transistor configured to directly connect the third node to the first power node in response to the first pulse;
• and
• a second transistor configured to directly connect the fourth node to the first power node in response to the second pulse.