Scan driving circuit, scan driver and display device

A scan driving circuit, comprising:

• an output module comprising a first switching unit, a second switching unit and a scan driving signal output end, the first switching unit and the second switching unit being connected in parallel and being jointly connected with the scan driving signal output end, a port of the first switching unit being away from the scan driving signal output end to receive a second clock signal, and a port of the second switching unit being away from the scan driving signal output end to receive a first reference signal;
• a first control module receiving a first clock signal and a start signal, and an operating state of the first switching unit being controlled according to the first clock signal and the start signal;
• and
• a second control module receiving a second reference signal, and an operating state of the second switching unit being controlled according to the operating state of the first control module and the second reference signal.