FTDIgate wasnt great for anybody, and now with hardware hobbyists and technological tinkerers moving away from the most popular USB to serial adapter. Usb-Serial Ch341a' title='Usb-Serial Ch341a' />Finding a Cheaper USB to Serial Chips. FTDI gate wasnt great for anybody, and now with hardware hobbyists and technological tinkerers moving away from the most popular USB to serial adapter, some other chip has to fill the void. The cheapest USB to serial chip on the market appears to be the CH3. G, available for 2. There is, however, almost no English documentation, and the datasheet for the CH3. Ians here to help you out. He got his mitts on a few of these chips and managed to figure out the pinout and a few reference schematics. He even made an Eagle part for you. Isnt that nice The CH3. USB device that emulates a standard serial interface, with speeds from 5. Mpbs. The chip supports 5. Usb-Serial Ch341a' title='Usb-Serial Ch341a' />V and 3. V, and all the weird modem lines are supported. This chip even has an Ir. Download Dvd Paypal. DA mode, because wireless communication in the 9. With Ians help, we now have a cheap source of USB to serial chips. Verbotene Software Chip'>Verbotene Software Chip. If you need the datasheet, here you go. The driver is a bit more difficult to find, but what youre looking for is the CH3. That can be found with a little bit of Google fu.