DATA LINE AND CHARGING DEVICE

Disclosed are a data line and a charging device, which belong to the technical field of communications. The data line comprises a Type-A interface, a first interface, a cable and a circuit identification module, with a VBUS pin, a D+ pin, a D- pin and a GDN pin in the Type-A interface being correspondingly connected to those in the first interface; and the circuit identification module comprising a pull-up resistor, a switch circuit, a filter circuit and a comparator circuit, wherein a first end of the switch circuit is connected to a CC pin of the first interface, a second end thereof is connected to the VBUS pin of the first interface by means of the pull-up resistor, and a third end thereof is connected to a CC pin of the Type-A interface; a first end of the filter circuit is connected to the CC pin of the Type-A interface, and a second end thereof is connected to a first input end of the comparator circuit; a second input end of the comparator circuit is connected to the VBUS pin of the first interface, and an output end of the comparator circuit is connected to a control end of the switch circuit; and the comparator circuit controls the first end of the switch circuit to be connected to the second end or the third end thereof.