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Electronics => Projects, Designs, and Technical Stuff => Topic started by: Jester on May 26, 2018, 09:55:10 am

Title: PL2303HX Where to get the real deal
Post by: Jester on May 26, 2018, 09:55:10 am
I need 10, USB to RS-485 dongles for a project. The legit FTDI ones from Digi-Key are a bit steep at $25 a pop.

The clones on Ebay are about $1, but use the cloned Prolific PL-2303HX chip (SSOP28) that causes no end of driver issues with Windows, so one solution might be to simply swap the cloned chip for a real one.

The problem is where to purchase the legit versions, Digi-Key and Mouser don't sell them. Does FTDI or other vendor offer a drop in substitute for the PL-2303HX, if so I can add a dozen on my next Digi-Key order or if they don't, a reliable source for a legitimate PL-2303HX in a SSOP28 package?
Title: Re: PL2303HX Where to get the real deal
Post by: T3sl4co1l on May 26, 2018, 10:25:08 am
I bought mine years ago on Newegg, it might not've even been them but a marketplace seller.  Think it was around $10.

Irony being, because it's old, it's not supported by new drivers; it's as good as counterfeit by the manufacturer.  I forced the original driver version and it's fine.

Ed: RS-232 dongle, that is.

Tim
Title: Re: PL2303HX Where to get the real deal
Post by: oPossum on May 26, 2018, 10:30:14 am
Most of the stuff from china has switched to the CH340G. The PL2303 clones are not common anymore.

For example... https://www.ebay.com/itm/132486311868 (https://www.ebay.com/itm/132486311868)

Avoid these... https://www.ebay.com/itm/321636098509 (https://www.ebay.com/itm/321636098509)  (RS-485 requires 3 wire to ensure common mode voltages)
Title: Re: PL2303HX Where to get the real deal
Post by: viperidae on May 28, 2018, 08:16:23 am
I would stay away from ftdi and prolific for good. And any other manufacturer that pulls the same kind of stunts with their drivers.
Title: Re: PL2303HX Where to get the real deal
Post by: Siwastaja on May 28, 2018, 08:42:00 am
Quote from: viperidae on May 28, 2018, 08:16:23 am
I would stay away from ftdi and prolific for good. And any other manufacturer that pulls the same kind of stunts with their drivers.

What would you recommend, then?
Title: Re: PL2303HX Where to get the real deal
Post by: Gyro on May 28, 2018, 08:58:40 am
Go for the CH340 / CH341? At least the 'fakes' are genuine. Check the driver status though.
Title: Re: PL2303HX Where to get the real deal
Post by: Theboel on May 28, 2018, 10:36:36 am
Quote from: Gyro on May 28, 2018, 08:58:40 am
Go for the CH340 / CH341? At least the 'fakes' are genuine. Check the driver status though.

Agree