Patent ID: 11915767
Assignee: KEY FOUNDRY CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 3:
4. The negative voltage switching device of claim 2,
wherein the second switching module comprises:
a third P-type transistor having a source connected to the first control signal terminal;
a fourth P-type transistor having a source connected to the first control signal terminal;
a third N-type transistor having a source connected to a first negative voltage terminal to supply the first negative voltage, and a drain connected to a drain of the third P-type transistor; and
a fourth N-type transistor having a source connected to the first negative voltage terminal to supply the first negative voltage, and a drain connected to a drain of the fourth P-type transistor,
wherein a gate of the third P-type transistor and the drain of the fourth N-type transistor are connected, and a gate of the fourth P-type transistor and the drain of the third N-type transistor are connected.