USB-SERIAL-L

USB-SERIAL-L is our most sophisticated USB to Serial convertor. It can work with any of our development boards as serial debug cable, ESP32 programmer.
Compared to our other USB to SERIAL products it have two major advantages:
1. Speed - The high speed up to 3Mbps, for comparison USB-SERIAL-F can work only up to 1Mbps, BB-CH340T can work only up to 2Mbps.
2. Voltage levels - USB-SERIAL-L can work with targets from 0.65V up to 5.5V. To adjust the voltage levels USB-SERIAL-L have dedcated signal line Vref which has to be connected to target VCC. If this signal is left floating the voltage levels will be default to 3V.
3. Signals - USB-SERIAL-L provide +5V from the USB to the target circuit.
The SERIAL interface has 4 signals Tx, Rx, RTS, CTS. Vref allow the voltage levels to be adjusted to these of the target.
USB-SERIAL-L have nice 3D printed enclosure and comes with 200 mm long cables. The USB is connected with USB-C connector.
USB-SERIAL-L provide 7 signals in this order +5V, CTS, RTS, Vref, Tx, Rx, GND