Are there many choice to make a USB to RS232?

[IamnotJunk]

Are there many choice to make a USB to RS232?
Curious how many type of design is available, and which one is the best.

 

[Iouri]

yes look at MCU with USB and UART

 

[bobcat1]

The easy way

Use CP2101 from silicon lab it is a bit expansive chip but easy to use

All the best

BObi

 

[cybernut]

There are cables available (about $10 in Canada) that do this. They've been available for 5 years or more. Is this the kind of thing that you mean? :?:

C

 

[nan_ishan]

Use CP2101 from silab,it has a Uart and a USB port.It provides all the signalling including DTR,DSR,RI,DCD,Rx,Tx.....etc.CAn be used for transrecieving.....from USB to RS232 and rs232 to USB.

 

[jdtoronto]

Or the FTDI FT232R chips are good to. The data sheet actually fgives you a full design for a USB-RS232 interface.

JD

 

[Arulaane]

We have used FTDIchip.com products in small projects. FT245 was the type, if I remember right. You can download free drivers and it is easy to communicate to from any MCU/MPU or FPGA/CPLD. These chips also have a parallel interface, if you are not married to the idea of using 232.

 

[funnynypd]

cygnal, FTDI or Microchip.

 

[ramiabr]

ya you can assemble the circut for that!!

usb signals are : 4

vcc
gnd
+D
-D

rs-232 signals are :

tx
rx
gnd

connect usb signal to usb transceiver which converts +/-D signals(differential logic signals ) to normal signals( one signal) !!
connect that signal to rs-232 !

a usb transceiver will be key try for different transceivers in fairchild, TI,philips etc !!