I finally managed to find after a test driver 15ène, a Mac OS X driver that works and creates two Linux devices in "/ dev"
1) "tty.wchusbserial1420"
2) "cu.wchusbserial1420"
It can be downloaded at the following address:
[...])
Once installed, you must reboot the machine so that the driver is active, because the reboot after the installation is not automatically required by the installer, but it is necessary.