<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE eagle SYSTEM "eagle.dtd">
<eagle version="7.6.0">
<drawing>
<board>
<plain>
<text>RPUBUS.ORG</text>
<wire x1="29.21" y1="18.0975" x2="29.21" y2="1.5875" width="0" layer="20"/>
<wire x1="29.21" y1="1.5875" x2="27.6225" y2="0" width="0" layer="20" curve="-90"/>
<wire x1="27.6225" y1="0" x2="1.5875" y2="0" width="0" layer="20"/>
<wire x1="1.5875" y1="0" x2="0" y2="1.5875" width="0" layer="20" curve="-90"/>
<wire x1="0" y1="1.5875" x2="0" y2="18.0975" width="0" layer="20"/>
<wire x1="0" y1="18.0975" x2="1.5875" y2="19.685" width="0" layer="20" curve="-90"/>
<wire x1="1.5875" y1="19.685" x2="27.6225" y2="19.685" width="0" layer="20"/>
<wire x1="27.6225" y1="19.685" x2="29.21" y2="18.0975" width="0" layer="20" curve="-90"/>
<text>18250^0</text>
<text>FROM_RX&lt;--</text>
<text>TO_TX--&gt;</text>
<text>UART_IOREF</text>
<text>0V</text>
<text>485tx_en</text>
<text>/W IOFF</text>
<text>0V</text>
<text>A/Y</text>
<text>B/Z</text>
<text>TXCVR
VCC</text>
<text>NC</text>
</plain>
<libraries>
<library name="C-C">
<description>&lt;pre&gt; MULTILAYER CERAMIC CHIP CAPACITORS

Type: C1005 [EIA CC0402], C1608 [EIA CC0603], C2012 [EIA CC0805],
C3216 [EIA CC1206], C3225 [EIA CC1210], C4532 [EIA CC1812], C5750 [EIA CC2220]

CH 0±60 ppm/°C -25 to +85°C
C0G 0±30 ppm/°C -55 to +125°C
JB ±10% -25 to +85°C
X5R ±15% -55 to +85°C
X6S ±22% -55 to +105°C
X7R ±15% -55 to +125°C
X7S ±22% -55 to +125°C
X7T +22/-33% -55 to +125°C

TDK voltage cods
0G 4V
0J 6.3V
1A 10V
1C 16V
1E 25V
1V 35V
1H 50V
2A 100V
2E 250V
2V 350V
2W 450V
2J 630V

NOTE: rounded pads... http://www.kemet.com/kemet/web/homepage/kfbk3.nsf/vaFeedbackFAQ/2209BDBA03843BBF85256BCD004EBC11/$file/f2100e.pdf
See section on Tombstoneing. Lead free solder may not wet edges, and IPC does not allow exposed copper. 
My (rsutherland@epccs) experience suggest highly rounded pads reduce solder beads that can be extruded along edges of larger capacitors (0805).

USE AT YOUR OWN RISK...

Copyright (C) 2013 Ronald Steven Sutherland
Released under the Creative Commons 
Attribution Share-Alike 3.0 License
http://creativecommons.org/licenses/by-sa/3.0</description>
<packages>
<package name="C0603(1608)">
<description>&lt;pre&gt;EIA 0603 (Metric Code Size 1608) Ceramic Chip Capacitor
rounded pads are added in IPC 782 rev A, this pad was on Arduino Due and may have originated from Sparkfun.
http://www.kemet.com/kemet/web/homepage/kfbk3.nsf/vaFeedbackFAQ/2209BDBA03843BBF85256BCD004EBC11/$file/f2100e.pdf</description>
</package>
</packages>
</library>
<library name="R-C">
<description>&lt;pre&gt;CHIP RESISTOR
NOTE: rounded pads... http://www.kemet.com/kemet/web/homepage/kfbk3.nsf/vaFeedbackFAQ/2209BDBA03843BBF85256BCD004EBC11/$file/f2100e.pdf
See section on Tombstoneing. Lead free solder may not wet edges, and IPC does not allow exposed copper. 
My (rsutherland@epccs) experience suggest highly rounded pads reduce solder beads that can be extruded along edges of larger capacitors (0805).
USE AT YOUR OWN RISK...
Copyright (C) 2013 Ronald Steven Sutherland
Permission is granted to copy, distribute and/or modify this document 
under the terms of the GNU Free Documentation License, Version 1.2 or 
any later version published by the Free Software Foundation; with no 
Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A 
copy of the license is included in the section entitled "GNU Free 
Documentation License".</description>
<packages>
<package name="C0805(2012)">
<description>&lt;pre&gt;EIA 0805 (Metric Code Size 2012) Ceramic Chip
rounded pads are added in IPC 782 rev A
http://www.kemet.com/kemet/web/homepage/kfbk3.nsf/vaFeedbackFAQ/2209BDBA03843BBF85256BCD004EBC11/$file/f2100e.pdf</description>
</package>
</packages>
</library>
<library name="H-Fiducial">
<description>&lt;pre&gt;Fiducianl Mark
USE AT YOUR OWN RISK...
Copyright (C) 2013 Ronald Steven Sutherland
Permission is granted to copy, distribute and/or modify this document 
under the terms of the GNU Free Documentation License, Version 1.2 or 
any later version published by the Free Software Foundation; with no 
Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A 
copy of the license is included in the section entitled "GNU Free 
Documentation License".</description>
<packages>
<package name="FIDUCIAL-1.27">
<description>&lt;pre&gt;Fiducian R=1.27mm 
STOP=2.54mm
It is up to designer to not put traces under Fiducial (i.e. Void or sold plane only)
Autorouter restricted areas are defined as RECTangles, POLYGONs, or CIRCLEs on the 
tRestrict, bRestrict, or vRestrict layers.</description>
</package>
</packages>
</library>
<library name="U-7400">
<description>&lt;pre&gt;Logic

USE AT YOUR OWN RISK...
This was form cadsoft libraian, but much of it is not valid, I have only 
looked at parts I'm using so far...

Copyright (C) 2013 Ronald Steven Sutherland
Released under the Creative Commons 
Attribution Share-Alike 3.0 License
http://creativecommons.org/licenses/by-sa/3.0</description>
<packages>
<package name="14SOIC">
<description>&lt;pre&gt;14POS SMALL OUTLINE (14SO[IC])
pitch 1.27
pad .6mm X1.8mm
body-Center to pad-Center 2.7mm

referance TI's SOIC package, but pads are little larger and rounded</description>
</package>
</packages>
</library>
<library name="J-HDR2.54mm">
<description>&lt;pre&gt;HEADER 2.54MM center to center

USE AT YOUR OWN RISK...
 
Copyright (C) 2013 Ronald Steven Sutherland
Released under the Creative Commons 
Attribution Share-Alike 3.0 License
http://creativecommons.org/licenses/by-sa/3.0</description>
<packages>
<package name="1X6">
<description>&lt;pre&gt;6 PIN 
.1" CENTER 
0.040" DRILL
auto PAD

http://www.sullinscorp.com/catalogs/78_Page80-81_HEADER_.100_2.54mm_FEMALE.pdf</description>
</package>
</packages>
</library>
<library name="U-Transceiver">
<description>&lt;pre&gt;Transceiver (both transmitter and a receiver)
http://en.wikipedia.org/wiki/Transceiver

USE AT YOUR OWN RISK...

Copyright (C) 2013 Ronald Steven Sutherland
Released under the Creative Commons 
Attribution Share-Alike 3.0 License
http://creativecommons.org/licenses/by-sa/3.0</description>
<packages>
<package name="SOIC8">
<description>&lt;pre&gt;8POS Standard SMALLl OUTLINE Package (SO/SOIC) Narrow Body</description>
</package>
</packages>
</library>
<library name="Q-NPN">
<description>&lt;pre&gt;NPN Bipolar junction transistor

USE AT YOUR OWN RISK...

Copyright (C) 2013 Ronald Steven Sutherland
Released under the Creative Commons 
Attribution Share-Alike 3.0 License
http://creativecommons.org/licenses/by-sa/3.0</description>
<packages>
<package name="SOT23">
<description>&lt;pre&gt;SOT23 (based on SOT23-6) pin 1 is alone (Cathode)
http://www.diodes.com/_files/zetex_files/pack/SOT23-6.pdf
center(1) to center(2,3) 2.2 mm
center(2) to center(3) 1.9mm
pad .65X x 1.06Y mm</description>
</package>
</packages>
</library>
<library name="J-HDR3.5mm">
<description>&lt;pre&gt;HEADER 3.5MM center to center
USE AT YOUR OWN RISK...
 
Copyright (C) 2013 Ronald Steven Sutherland
Released under the Creative Commons 
Attribution Share-Alike 3.0 License
http://creativecommons.org/licenses/by-sa/3.0</description>
<packages>
<package name="MCV4">
<description>&lt;pre&gt;MCV 1,5/4-G-3,5-RN [PHOENIX CONTACT,1843622] CONN HEADER SHROUDED 4POS 3.5MM
PST 1,0/4-3,5 [PHOENIX CONTACT,1945119] CONN HEADER STRIP PIN 4POS 3.5MM

Drill Size 3/64": .0469" (1.2mm)</description>
</package>
</packages>
</library>
</libraries>
<attributes>
</attributes>
<variantdefs>
</variantdefs>
<elements>
<element name="U$2" library="H-Fiducial" package="FIDUCIAL-1.27" value="FIDUCIAL1.27"/>
<element name="U$3" library="H-Fiducial" package="FIDUCIAL-1.27" value="FIDUCIAL1.27"/>
<element name="U$4" library="H-Fiducial" package="FIDUCIAL-1.27" value="FIDUCIAL1.27"/>
<element name="C2" library="C-C" package="C0603(1608)" value=".1uF">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="U1" library="U-7400" package="14SOIC" value="74LVC07A">
<attribute name="NAME"/>
</element>
<element name="C1" library="C-C" package="C0603(1608)" value="0.1uF">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C3" library="C-C" package="C0603(1608)" value="0.1uF">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R1" library="R-C" package="C0805(2012)" value="3.01k">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R4" library="R-C" package="C0805(2012)" value="3.01k">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R5" library="R-C" package="C0805(2012)" value="3.01k">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R3" library="R-C" package="C0805(2012)" value="3.01k">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="U2" library="U-Transceiver" package="SOIC8" value="THVD1500">
<attribute name="NAME"/>
</element>
<element name="R2" library="R-C" package="C0805(2012)" value="182">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R6" library="R-C" package="C0805(2012)" value="100k">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="Q1" library="Q-NPN" package="SOT23" value="K1N">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="J2" library="J-HDR3.5mm" package="MCV4" value="PST1,0/4-3,5">
<attribute name="NAME"/>
</element>
<element name="J1" library="J-HDR2.54mm" package="1X6" value="PBC06SAAN"/>
</elements>
<signals>
<signal name="0V">
<contactref element="C2" pad="2"/>
<contactref element="U1" pad="7"/>
<contactref element="C1" pad="2"/>
<contactref element="Q1" pad="E"/>
<contactref element="R4" pad="2"/>
<contactref element="U1" pad="1"/>
<contactref element="U1" pad="3"/>
<contactref element="U1" pad="5"/>
<contactref element="U1" pad="9"/>
<contactref element="J2" pad="4"/>
<contactref element="U2" pad="5"/>
<contactref element="C3" pad="2"/>
<contactref element="J1" pad="1"/>
</signal>
<signal name="UART_RX">
<contactref element="R2" pad="1"/>
<contactref element="J1" pad="5"/>
</signal>
<signal name="UART_TX">
<contactref element="U1" pad="11"/>
<contactref element="J1" pad="4"/>
</signal>
<signal name="DE">
<contactref element="R5" pad="1"/>
<contactref element="U2" pad="3"/>
<contactref element="Q1" pad="C"/>
</signal>
<signal name="TXCVR_VCC">
<contactref element="R5" pad="2"/>
<contactref element="R1" pad="2"/>
<contactref element="J2" pad="1"/>
<contactref element="U2" pad="8"/>
<contactref element="C3" pad="1"/>
</signal>
<signal name="!RE">
<contactref element="R4" pad="1"/>
<contactref element="U2" pad="2"/>
</signal>
<signal name="RO">
<contactref element="U1" pad="13"/>
<contactref element="U2" pad="1"/>
</signal>
<signal name="DI">
<contactref element="U1" pad="10"/>
<contactref element="R1" pad="1"/>
<contactref element="U2" pad="4"/>
<contactref element="R6" pad="1"/>
</signal>
<signal name="UART_IOREF">
<contactref element="C1" pad="1"/>
<contactref element="R3" pad="2"/>
<contactref element="J1" pad="3"/>
<contactref element="C2" pad="1"/>
<contactref element="U1" pad="14"/>
</signal>
<signal name="N$25">
<contactref element="R6" pad="2"/>
<contactref element="Q1" pad="B"/>
</signal>
<signal name="N$1">
<contactref element="R2" pad="2"/>
<contactref element="U1" pad="12"/>
<contactref element="R3" pad="1"/>
</signal>
<signal name="B">
<contactref element="J2" pad="2"/>
<contactref element="U2" pad="7"/>
</signal>
<signal name="A">
<contactref element="J2" pad="3"/>
<contactref element="U2" pad="6"/>
</signal>
</signals>
</board>
</drawing>
</eagle>
