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Updated:
16 Oct, 2013



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RS232 to Logic Converter

This is not the first one you've probably seen...

But maybe it's the first one you've seen that just plugs onto the of a DE-9 connector that has separate LED's for both TX and RX. I've seen too many with dual-color LED's and I don't like them because they are hard enough to see at low bit-rates. (Red with an occasional smidgen of green. Yea... Right.)

So I made these to show power (Yellow LED) and also have a separate Red/Green LED for each line from a MAX3221 level converter. Typically my clients who work on microcontroller products like them for temporary debug ports. They hook them up with clip-leads as shown below (although the adapter is delivered without).

The MAX3221 operates from +3.0V to +5.5V and is powered by the USER (not the RS232 signals).
The MAX3221's _INVALID_ line is also available for use.

So here it is -- available for a mere $25 assembled and tested. ;)
(Shipping Charges for UPS/FedEx or CC Fees may be extra)

Feel free to email me if you'd like to buy some.




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