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PICList Thread
'TTL to RS-232 voltages'
1999\04\19@060520 by Johann Geir Jonsson

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<DIV><FONT color=#000000 size=2>Hi,</FONT></DIV>
<DIV><FONT color=#000000 size=2>What's the best way to convert from TTL to
RS-232 voltages and vice versa?&nbsp; In other words, how do I interface the PIC
with the PC serial port?&nbsp; I intend to use David Tait's 12V-to-5V circuit
(instead of a 5V regulator) to power to circuit from DTR/RTS.&nbsp; I know there
are IC's to do this (e.g. MAX232) but I'd rather use a simple transistor circuit
to convert the voltages and then implement the serial communication in
code.</FONT></DIV>
<DIV><FONT color=#000000 size=2></FONT>&nbsp;</DIV>
<DIV><FONT size=2>Best regards,</FONT></DIV>
<DIV><FONT size=2>Johann Geir Jonsson</FONT></DIV></BODY></HTML>

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