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<!DOCTYPE eagle SYSTEM "eagle.dtd">
<eagle version="7.4.0">
<drawing>
<board>
<plain>
<wire x1="0" y1="0" x2="18.4025" y2="0" width="0" layer="20"/>
<wire x1="18.4025" y1="0" x2="18.4025" y2="18.405" width="0" layer="20"/>
<wire x1="18.4025" y1="18.405" x2="0" y2="18.405" width="0" layer="20"/>
<wire x1="0" y1="18.405" x2="0" y2="0" width="0" layer="20"/>
<text>*</text>
<text>VQFN20</text>
<text>3.5x4.5</text>
<text>(c) Piers
Finlayson
2016</text>
<text>VQFN20 v0.1</text>
</plain>
<libraries>
<library name="SparkFun-Connectors">
<description>&lt;h3&gt;SparkFun Electronics' preferred foot prints&lt;/h3&gt;
In this library you'll find connectors and sockets- basically anything that can be plugged into or onto.&lt;br&gt;&lt;br&gt;
We've spent an enormous amount of time creating and checking these footprints and parts, but it is the end user's responsibility to ensure correctness and suitablity for a given componet or application. If you enjoy using this library, please buy one of our products at www.sparkfun.com.
&lt;br&gt;&lt;br&gt;
&lt;b&gt;Licensing:&lt;/b&gt; Creative Commons ShareAlike 4.0 International - https://creativecommons.org/licenses/by-sa/4.0/ 
&lt;br&gt;&lt;br&gt;
You are welcome to use this library for commercial purposes. For attribution, we ask that when you begin to sell your device using our footprint, you email us with a link to the product being sold. We want bragging rights that we helped (in a very small part) to create your 8th world wonder. We would like the opportunity to feature your device on our homepage.</description>
<packages>
<package name="1X05">
</package>
</packages>
</library>
<library name="Piers's library">
<packages>
<package name="RGY20_3P05X2P05">
</package>
</packages>
</library>
</libraries>
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<attribute name="VALUE"/>
</element>
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<attribute name="VALUE"/>
</element>
<element name="J6-10" library="SparkFun-Connectors" package="1X05" value="">
<attribute name="VALUE"/>
</element>
<element name="U1" library="Piers's library" package="RGY20_3P05X2P05" value="PCF8574_RGY_20">
<attribute name="GENERIC_PART_NUMBER" value="PCF8574"/>
<attribute name="MANUFACTURER" value="Texas Instruments"/>
<attribute name="PIN_COUNT" value="20"/>
<attribute name="DATASHEETURL" value="http://www.ti.com/lit/gpn/PCF8574"/>
<attribute name="MANUFACTURER_PART_NUMBER" value="pcf8574_rgy_20"/>
<attribute name="INDUSTRY_STD_PKG_TYPE" value="VQFN"/>
<attribute name="VENDOR" value="Texas Instruments"/>
<attribute name="FAMILY_NAME" value="I2C IO EXPANDER"/>
<attribute name="PACKAGE_DESIGNATOR" value="RGY"/>
</element>
</elements>
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<contactref element="J1-5" pad="5"/>
</signal>
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<contactref element="U1" pad="2"/>
<contactref element="J1-5" pad="4"/>
</signal>
<signal name="N$3">
<contactref element="U1" pad="3"/>
<contactref element="J1-5" pad="3"/>
</signal>
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<signal name="N$10">
<contactref element="U1" pad="6"/>
<contactref element="J6-10" pad="1"/>
</signal>
<signal name="N$11">
<contactref element="J16-20" pad="1"/>
<contactref element="U1" pad="16"/>
</signal>
<signal name="N$12">
<contactref element="J16-20" pad="2"/>
<contactref element="U1" pad="17"/>
</signal>
<signal name="N$13">
<contactref element="J16-20" pad="3"/>
<contactref element="U1" pad="18"/>
</signal>
<signal name="N$14">
<contactref element="J16-20" pad="4"/>
<contactref element="U1" pad="19"/>
</signal>
<signal name="N$15">
<contactref element="J16-20" pad="5"/>
<contactref element="U1" pad="20"/>
</signal>
<signal name="GND">
<contactref element="U1" pad="21"/>
</signal>
<signal name="N$17">
<contactref element="J11-15" pad="1"/>
<contactref element="U1" pad="11"/>
</signal>
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<contactref element="U1" pad="15"/>
<contactref element="J11-15" pad="5"/>
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</board>
</drawing>
</eagle>
