<div dir="ltr"><div class="gmail_default" style><span style="color:rgb(37,37,37);font-family:sans-serif;font-size:14px;line-height:22.3999996185303px">The Electronic Industries Alliance (EIA) once labeled all its standards with the prefix "RS" (Recommended Standard), but the EIA-TIA officially replaced "RS" with "EIA/TIA" to help identify the origin of its standards.</span><span style="color:rgb(37,37,37);font-family:sans-serif;font-size:14px;line-height:22.3999996185303px"> The EIA has officially disbanded and the standard is now maintained by the </span><font color="#252525" face="sans-serif"><span style="font-size:14px;line-height:22.3999996185303px">Telecommunications Industry Association (</span></font><span style="color:rgb(37,37,37);font-family:sans-serif;font-size:14px;line-height:22.3999996185303px">TIA). The RS-485 standard is superseded by TIA-485, but often engineers and applications guides continue to use the RS designation.</span></div><div class="gmail_default" style="font-family:tahoma,sans-serif;font-size:small;color:rgb(0,0,0)"><span style="color:rgb(37,37,37);font-family:sans-serif;font-size:14px;line-height:22.3999996185303px"><br></span></div><div class="gmail_default" style="font-family:tahoma,sans-serif;font-size:small;color:rgb(0,0,0)"><span style="color:rgb(37,37,37);font-family:sans-serif;font-size:14px;line-height:22.3999996185303px"><i>Adapted from Wikipedia article on RS-485</i></span></div><div class="gmail_default" style="font-family:tahoma,sans-serif;font-size:small;color:rgb(0,0,0)"><span style="color:rgb(37,37,37);font-family:sans-serif;font-size:14px;line-height:22.3999996185303px"><br></span></div><div class="gmail_default" style><span style="color:rgb(37,37,37);font-family:sans-serif;font-size:14px;line-height:22.3999996185303px">For an interesting list of EIA standards see </span><font color="#252525" face="sans-serif"><span style="font-size:14px;line-height:22.3999996185303px"><a href="http://en.wikipedia.org/wiki/EIA_standards">http://en.wikipedia.org/wiki/EIA_standards</a></span></font></div><div class="gmail_default" style="font-family:tahoma,sans-serif;font-size:small;color:rgb(0,0,0)"><span style="color:rgb(37,37,37);font-family:sans-serif;font-size:14px;line-height:22.3999996185303px"><br></span></div><div><div class="gmail_signature"><div dir="ltr"><font face="courier new, monospace" color="#0000ff"><b>73 Karl W4KRL</b></font></div></div></div>
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