FTR USB UART I.C. Datasheet Version © Future Technology Devices International Ltd. Page 2. •. Single chip USB to asynchronous serial data. FTDI FTB Series USB Interface IC are available at Mouser Electronics. Mouser offers inventory, pricing, & datasheets for FTDI FTB Series USB Interface. FTBL-REEL FTDI USB Interface IC USB to Serial UART IC LQFP datasheet, inventory, & pricing.

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FTBL – Unknown device. Here is my scheme.

When i connect it to pc i see Unknown Device. DeviceFailedEnumeration and in all other places are zero.

[SOLVED] FTBL – Unknown device

Is problem in my scheme or what? Since you have used the usb bus powered configuration, make sure that your circuit did not take too much current as mentioned in the datasheet.


I have other device with this IC and it works fine. Maybe that FTBL is wrong?

USB Serial Adapter RS232 Comparison Chart

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