Home › Magazines › 2008 › July/August › USB RS-232 Cable

USB <-> RS-232 Cable

Published in issue 379, July/August 2008

This project lets you conveniently connect any computer with USB ports directly to a simple, traditional connector — the 9-pin RS-232 (anyone remembers it?).

It converts the electrical signals from a USB<–>serial TLL convertor to the RS-232 standard. So in a nutshell, it converts a USB port into a standard but basic serial port: only the four basic signals are available.

Components

Relevant websites

Capacitors
C1-C5 = 100nF 25V (SMD 1206)
Semiconductors
IC1 = MAX3232CSE (or -ESE)
Miscellaneous
K1 = 6-way right-angled SIL pinheader
K2 = 9-way cable mount sub-D plug (male)
FTDI TTL-232R-5.0V cable, Elektor SHOP # 080213-71
Piece of large diameter heatshrink sleeving
PCB, ref. 080470-I from www.thepcbshop.com

Click below to download a PDF copy of this article from Elektor magazine.

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	080470-1

Please note. In view of the complexity of international markets, Elektor cannot guarantee the availability of components for this project.

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USB <-> RS-232 Cable

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USB <-> RS-232 Cable

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