Output port circuit, integrated chip and electronic equipment

The utility model discloses an output port circuit, an integrated chip and an electronic device, belonging to the integrated circuit technology field, the output port circuit comprises an inverter, an NAND gate, a first control transistor, a second control transistor, a third control transistor and a second switch transistor; the second electrode of the second control transistor is connected with the second electrode of the second switch transistor and is connected with the grid electrode of the third control transistor, the first electrode of the second switch transistor is grounded, the first electrode of the second control transistor is connected with a first node, the first node is further connected with the first electrode of the third control transistor, and the second electrode of the third control transistor is grounded. And the second electrode of the third control transistor is connected with the power supply voltage. By arranging the second switch transistor, the second control transistor and the t