<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE eagle SYSTEM "eagle.dtd">
<eagle version="6.6.0">
<drawing>
<board>
<plain>
<wire x1="-0.63" y1="-0.47" x2="45.705" y2="-0.47" width="0" layer="20"/>
<wire x1="45.705" y1="-0.47" x2="45.705" y2="35.395" width="0" layer="20"/>
<wire x1="45.705" y1="35.395" x2="-0.63" y2="35.395" width="0" layer="20"/>
<wire x1="-0.63" y1="35.395" x2="-0.63" y2="-0.47" width="0" layer="20"/>
</plain>
<libraries>
<library name="rcl">
<packages>
<package name="0207/10">
<description>&lt;b&gt;RESISTOR&lt;/b&gt;&lt;p&gt;
type 0207, grid 10 mm</description>
</package>
</packages>
</library>
<library name="wirepad">
<packages>
<package name="1,6/0,9">
<description>&lt;b&gt;THROUGH-HOLE PAD&lt;/b&gt;</description>
</package>
</packages>
</library>
<library name="diode">
<packages>
<package name="DO35Z10">
<description>&lt;B&gt;DIODE&lt;/B&gt;&lt;p&gt;
diameter 2 mm, horizontal, grid 10.16mm</description>
</package>
</packages>
</library>
<library name="transistor-small-signal">
<packages>
<package name="SOT54E">
<description>&lt;b&gt;SOT-54&lt;/b&gt;&lt;p&gt;
grid 2.54 mm</description>
</package>
</packages>
</library>
<library name="74xx-us">
<description>&lt;b&gt;TTL Devices, 74xx Series with US Symbols&lt;/b&gt;&lt;p&gt;
Based on the following sources:
&lt;ul&gt;
&lt;li&gt;Texas Instruments &lt;i&gt;TTL Data Book&lt;/i&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;Volume 1, 1996.
&lt;li&gt;TTL Data Book, Volume 2 , 1993
&lt;li&gt;National Seminconductor Databook 1990, ALS/LS Logic
&lt;li&gt;ttl 74er digital data dictionary, ECA Electronic + Acustic GmbH, ISBN 3-88109-032-0
&lt;li&gt;http://icmaster.com/ViewCompare.asp
&lt;/ul&gt;
&lt;author&gt;Created by librarian@cadsoft.de&lt;/author&gt;</description>
<packages>
<package name="DIL20">
<description>&lt;b&gt;Dual In Line Package&lt;/b&gt;</description>
</package>
</packages>
</library>
</libraries>
<attributes>
</attributes>
<variantdefs>
</variantdefs>
<elements>
<element name="R2" library="rcl" package="0207/10" value="5K"/>
<element name="PULL_GND" library="wirepad" package="1,6/0,9" value="">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="MUT" library="wirepad" package="1,6/0,9" value="">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="PULL_DOWN" library="wirepad" package="1,6/0,9" value="">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="!PULL_UP" library="wirepad" package="1,6/0,9" value=""/>
<element name="TTL_RX" library="wirepad" package="1,6/0,9" value="">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R1" library="rcl" package="0207/10" value="5K"/>
<element name="Q2" library="transistor-small-signal" package="SOT54E" value="BS170"/>
<element name="Q3" library="transistor-small-signal" package="SOT54E" value="BS170">
<attribute name="VALUE"/>
<attribute name="NAME"/>
</element>
<element name="R12" library="rcl" package="0207/10" value="10K"/>
<element name="R14" library="rcl" package="0207/10" value="5K"/>
<element name="R13" library="rcl" package="0207/10" value="10K"/>
<element name="Q1" library="transistor-small-signal" package="SOT54E" value="BS250"/>
<element name="Q4" library="transistor-small-signal" package="SOT54E" value="BS170"/>
<element name="Q5" library="transistor-small-signal" package="SOT54E" value="BS250"/>
<element name="D1" library="diode" package="DO35Z10" value="1N5229B"/>
<element name="D2" library="diode" package="DO35Z10" value="1N5229B"/>
<element name="IC1" library="74xx-us" package="DIL20" value="74LS244N"/>
<element name="-5V" library="wirepad" package="1,6/0,9" value=""/>
<element name="GND" library="wirepad" package="1,6/0,9" value=""/>
<element name="5V" library="wirepad" package="1,6/0,9" value=""/>
<element name="R3" library="rcl" package="0207/10" value="5K"/>
<element name="PULL_GND1" library="wirepad" package="1,6/0,9" value=""/>
<element name="MUT1" library="wirepad" package="1,6/0,9" value=""/>
<element name="PULL_DOWN1" library="wirepad" package="1,6/0,9" value=""/>
<element name="!PULL_UP1" library="wirepad" package="1,6/0,9" value=""/>
<element name="TTL_RX1" library="wirepad" package="1,6/0,9" value=""/>
<element name="R4" library="rcl" package="0207/10" value="5K"/>
<element name="Q6" library="transistor-small-signal" package="SOT54E" value="BS170">
<attribute name="VALUE"/>
<attribute name="NAME"/>
</element>
<element name="Q7" library="transistor-small-signal" package="SOT54E" value="BS170"/>
<element name="R5" library="rcl" package="0207/10" value="10K"/>
<element name="R6" library="rcl" package="0207/10" value="5K"/>
<element name="R7" library="rcl" package="0207/10" value="10K"/>
<element name="Q8" library="transistor-small-signal" package="SOT54E" value="BS250"/>
<element name="Q9" library="transistor-small-signal" package="SOT54E" value="BS170"/>
<element name="Q10" library="transistor-small-signal" package="SOT54E" value="BS250"/>
<element name="D3" library="diode" package="DO35Z10" value="1N5229B"/>
<element name="D4" library="diode" package="DO35Z10" value="1N5229B"/>
</elements>
<signals>
<signal name="V+">
<contactref element="R4" pad="2"/>
</signal>
<signal name="GND">
<contactref element="R13" pad="2"/>
<contactref element="Q2" pad="S"/>
<contactref element="Q5" pad="S"/>
<contactref element="Q4" pad="S"/>
<contactref element="D2" pad="C"/>
<contactref element="GND" pad="1"/>
<contactref element="IC1" pad="10"/>
<contactref element="IC1" pad="1"/>
<contactref element="R7" pad="2"/>
<contactref element="Q6" pad="S"/>
<contactref element="Q10" pad="S"/>
<contactref element="Q9" pad="S"/>
<contactref element="D4" pad="C"/>
<contactref element="IC1" pad="19"/>
</signal>
<signal name="N$3">
<contactref element="PULL_GND" pad="1"/>
<contactref element="IC1" pad="6"/>
</signal>
<signal name="N$4">
<contactref element="PULL_DOWN" pad="1"/>
<contactref element="IC1" pad="8"/>
</signal>
<signal name="-5V">
<contactref element="R2" pad="2"/>
<contactref element="R14" pad="1"/>
<contactref element="-5V" pad="1"/>
<contactref element="R3" pad="2"/>
<contactref element="R6" pad="1"/>
</signal>
<signal name="N$2">
<contactref element="R2" pad="1"/>
<contactref element="Q3" pad="G"/>
<contactref element="R12" pad="2"/>
</signal>
<signal name="N$16">
<contactref element="R14" pad="2"/>
<contactref element="Q3" pad="S"/>
<contactref element="R13" pad="1"/>
</signal>
<signal name="N$5">
<contactref element="Q1" pad="S"/>
<contactref element="IC1" pad="18"/>
</signal>
<signal name="N$1">
<contactref element="MUT" pad="1"/>
<contactref element="Q2" pad="D"/>
<contactref element="Q3" pad="D"/>
<contactref element="Q1" pad="D"/>
<contactref element="D1" pad="C"/>
<contactref element="Q4" pad="G"/>
<contactref element="Q5" pad="G"/>
</signal>
<signal name="N$10">
<contactref element="!PULL_UP" pad="1"/>
<contactref element="IC1" pad="4"/>
</signal>
<signal name="N$7">
<contactref element="D1" pad="A"/>
<contactref element="D2" pad="A"/>
</signal>
<signal name="N$8">
<contactref element="Q4" pad="D"/>
<contactref element="Q5" pad="D"/>
<contactref element="TTL_RX" pad="1"/>
<contactref element="R1" pad="1"/>
</signal>
<signal name="N$6">
<contactref element="Q1" pad="G"/>
<contactref element="IC1" pad="16"/>
</signal>
<signal name="N$9">
<contactref element="R12" pad="1"/>
<contactref element="IC1" pad="12"/>
</signal>
<signal name="N$11">
<contactref element="IC1" pad="14"/>
<contactref element="Q2" pad="G"/>
</signal>
<signal name="+5V">
<contactref element="5V" pad="1"/>
<contactref element="IC1" pad="20"/>
<contactref element="IC1" pad="2"/>
<contactref element="IC1" pad="11"/>
<contactref element="R1" pad="2"/>
</signal>
<signal name="N$12">
<contactref element="IC1" pad="15"/>
<contactref element="PULL_GND1" pad="1"/>
</signal>
<signal name="N$13">
<contactref element="IC1" pad="17"/>
<contactref element="PULL_DOWN1" pad="1"/>
</signal>
<signal name="N$14">
<contactref element="R3" pad="1"/>
<contactref element="Q7" pad="G"/>
<contactref element="R5" pad="2"/>
</signal>
<signal name="N$15">
<contactref element="R6" pad="2"/>
<contactref element="Q7" pad="S"/>
<contactref element="R7" pad="1"/>
</signal>
<signal name="N$17">
<contactref element="IC1" pad="9"/>
<contactref element="Q8" pad="S"/>
</signal>
<signal name="N$18">
<contactref element="Q7" pad="D"/>
<contactref element="Q6" pad="D"/>
<contactref element="MUT1" pad="1"/>
<contactref element="Q8" pad="D"/>
<contactref element="D3" pad="C"/>
<contactref element="Q9" pad="G"/>
<contactref element="Q10" pad="G"/>
</signal>
<signal name="N$19">
<contactref element="IC1" pad="13"/>
<contactref element="!PULL_UP1" pad="1"/>
</signal>
<signal name="N$20">
<contactref element="D3" pad="A"/>
<contactref element="D4" pad="A"/>
</signal>
<signal name="N$21">
<contactref element="Q9" pad="D"/>
<contactref element="Q10" pad="D"/>
<contactref element="TTL_RX1" pad="1"/>
<contactref element="R4" pad="1"/>
</signal>
<signal name="N$22">
<contactref element="Q8" pad="G"/>
<contactref element="IC1" pad="7"/>
</signal>
<signal name="N$23">
<contactref element="R5" pad="1"/>
<contactref element="IC1" pad="3"/>
</signal>
<signal name="N$24">
<contactref element="IC1" pad="5"/>
<contactref element="Q6" pad="G"/>
</signal>
</signals>
</board>
</drawing>
</eagle>
