<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE eagle SYSTEM "eagle.dtd">
<eagle version="9.6.2">
  <drawing>
    <settings><setting alwaysvectorfont="no"/><setting verticaltext="up"/></settings>
    <grid distance="0.1" unitdist="mm" unit="mm" style="lines" multiple="1" display="yes" altdistance="0.05" altunitdist="mm" altunit="mm"/>
    <layers>
      <layer number="1" name="Top" color="4" fill="1" visible="yes" active="yes"/>
      <layer number="16" name="Bottom" color="1" fill="1" visible="yes" active="yes"/>
      <layer number="17" name="Pads" color="2" fill="1" visible="yes" active="yes"/>
      <layer number="18" name="Vias" color="2" fill="1" visible="yes" active="yes"/>
      <layer number="21" name="tPlace" color="7" fill="1" visible="yes" active="yes"/>
      <layer number="25" name="tNames" color="7" fill="1" visible="yes" active="yes"/>
      <layer number="27" name="tValues" color="7" fill="1" visible="yes" active="yes"/>
      <layer number="29" name="tStop" color="7" fill="3" visible="no" active="yes"/>
      <layer number="31" name="tCream" color="7" fill="4" visible="no" active="yes"/>
      <layer number="39" name="tKeepout" color="4" fill="11" visible="yes" active="yes"/>
      <layer number="41" name="tRestrict" color="4" fill="10" visible="yes" active="yes"/>
      <layer number="51" name="tDocu" color="7" fill="1" visible="yes" active="yes"/>
      <layer number="94" name="Symbols" color="4" fill="1" visible="yes" active="yes"/>
      <layer number="95" name="Names" color="7" fill="1" visible="yes" active="yes"/>
      <layer number="96" name="Values" color="7" fill="1" visible="yes" active="yes"/>
    </layers>
    <library>
      <packages>
        <package name="C22439562_LQFP-48_7x7">
          <description>CH9104L — Clean-Room IPC-7351B / JEDEC MS-026-BBC</description>
          <smd name="1" x="-4.2" y="2.75" dx="1.25" dy="0.3" layer="1" roundness="25"/>
          <smd name="2" x="-4.2" y="2.25" dx="1.25" dy="0.3" layer="1" roundness="25"/>
          <smd name="3" x="-4.2" y="1.75" dx="1.25" dy="0.3" layer="1" roundness="25"/>
          <smd name="4" x="-4.2" y="1.25" dx="1.25" dy="0.3" layer="1" roundness="25"/>
          <smd name="5" x="-4.2" y="0.75" dx="1.25" dy="0.3" layer="1" roundness="25"/>
          <smd name="6" x="-4.2" y="0.25" dx="1.25" dy="0.3" layer="1" roundness="25"/>
          <smd name="7" x="-4.2" y="-0.25" dx="1.25" dy="0.3" layer="1" roundness="25"/>
          <smd name="8" x="-4.2" y="-0.75" dx="1.25" dy="0.3" layer="1" roundness="25"/>
          <smd name="9" x="-4.2" y="-1.25" dx="1.25" dy="0.3" layer="1" roundness="25"/>
          <smd name="10" x="-4.2" y="-1.75" dx="1.25" dy="0.3" layer="1" roundness="25"/>
          <smd name="11" x="-4.2" y="-2.25" dx="1.25" dy="0.3" layer="1" roundness="25"/>
          <smd name="12" x="-4.2" y="-2.75" dx="1.25" dy="0.3" layer="1" roundness="25"/>
          <smd name="13" x="-2.75" y="-4.2" dx="0.3" dy="1.25" layer="1" roundness="25"/>
          <smd name="14" x="-2.25" y="-4.2" dx="0.3" dy="1.25" layer="1" roundness="25"/>
          <smd name="15" x="-1.75" y="-4.2" dx="0.3" dy="1.25" layer="1" roundness="25"/>
          <smd name="16" x="-1.25" y="-4.2" dx="0.3" dy="1.25" layer="1" roundness="25"/>
          <smd name="17" x="-0.75" y="-4.2" dx="0.3" dy="1.25" layer="1" roundness="25"/>
          <smd name="18" x="-0.25" y="-4.2" dx="0.3" dy="1.25" layer="1" roundness="25"/>
          <smd name="19" x="0.25" y="-4.2" dx="0.3" dy="1.25" layer="1" roundness="25"/>
          <smd name="20" x="0.75" y="-4.2" dx="0.3" dy="1.25" layer="1" roundness="25"/>
          <smd name="21" x="1.25" y="-4.2" dx="0.3" dy="1.25" layer="1" roundness="25"/>
          <smd name="22" x="1.75" y="-4.2" dx="0.3" dy="1.25" layer="1" roundness="25"/>
          <smd name="23" x="2.25" y="-4.2" dx="0.3" dy="1.25" layer="1" roundness="25"/>
          <smd name="24" x="2.75" y="-4.2" dx="0.3" dy="1.25" layer="1" roundness="25"/>
          <smd name="25" x="4.2" y="-2.75" dx="1.25" dy="0.3" layer="1" roundness="25"/>
          <smd name="26" x="4.2" y="-2.25" dx="1.25" dy="0.3" layer="1" roundness="25"/>
          <smd name="27" x="4.2" y="-1.75" dx="1.25" dy="0.3" layer="1" roundness="25"/>
          <smd name="28" x="4.2" y="-1.25" dx="1.25" dy="0.3" layer="1" roundness="25"/>
          <smd name="29" x="4.2" y="-0.75" dx="1.25" dy="0.3" layer="1" roundness="25"/>
          <smd name="30" x="4.2" y="-0.25" dx="1.25" dy="0.3" layer="1" roundness="25"/>
          <smd name="31" x="4.2" y="0.25" dx="1.25" dy="0.3" layer="1" roundness="25"/>
          <smd name="32" x="4.2" y="0.75" dx="1.25" dy="0.3" layer="1" roundness="25"/>
          <smd name="33" x="4.2" y="1.25" dx="1.25" dy="0.3" layer="1" roundness="25"/>
          <smd name="34" x="4.2" y="1.75" dx="1.25" dy="0.3" layer="1" roundness="25"/>
          <smd name="35" x="4.2" y="2.25" dx="1.25" dy="0.3" layer="1" roundness="25"/>
          <smd name="36" x="4.2" y="2.75" dx="1.25" dy="0.3" layer="1" roundness="25"/>
          <smd name="37" x="2.75" y="4.2" dx="0.3" dy="1.25" layer="1" roundness="25"/>
          <smd name="38" x="2.25" y="4.2" dx="0.3" dy="1.25" layer="1" roundness="25"/>
          <smd name="39" x="1.75" y="4.2" dx="0.3" dy="1.25" layer="1" roundness="25"/>
          <smd name="40" x="1.25" y="4.2" dx="0.3" dy="1.25" layer="1" roundness="25"/>
          <smd name="41" x="0.75" y="4.2" dx="0.3" dy="1.25" layer="1" roundness="25"/>
          <smd name="42" x="0.25" y="4.2" dx="0.3" dy="1.25" layer="1" roundness="25"/>
          <smd name="43" x="-0.25" y="4.2" dx="0.3" dy="1.25" layer="1" roundness="25"/>
          <smd name="44" x="-0.75" y="4.2" dx="0.3" dy="1.25" layer="1" roundness="25"/>
          <smd name="45" x="-1.25" y="4.2" dx="0.3" dy="1.25" layer="1" roundness="25"/>
          <smd name="46" x="-1.75" y="4.2" dx="0.3" dy="1.25" layer="1" roundness="25"/>
          <smd name="47" x="-2.25" y="4.2" dx="0.3" dy="1.25" layer="1" roundness="25"/>
          <smd name="48" x="-2.75" y="4.2" dx="0.3" dy="1.25" layer="1" roundness="25"/>
          <wire x1="-3.5" y1="3.5" x2="-3.12" y2="3.5" width="0.15" layer="21"/>
          <wire x1="3.12" y1="3.5" x2="3.5" y2="3.5" width="0.15" layer="21"/>
          <wire x1="3.5" y1="-3.5" x2="3.5" y2="-3.12" width="0.15" layer="21"/>
          <wire x1="3.5" y1="3.12" x2="3.5" y2="3.5" width="0.15" layer="21"/>
          <wire x1="-3.5" y1="-3.5" x2="-3.12" y2="-3.5" width="0.15" layer="21"/>
          <wire x1="3.12" y1="-3.5" x2="3.5" y2="-3.5" width="0.15" layer="21"/>
          <wire x1="-3.5" y1="-3.5" x2="-3.5" y2="-3.12" width="0.15" layer="21"/>
          <wire x1="-3.5" y1="3.12" x2="-3.5" y2="3.5" width="0.15" layer="21"/>
          <circle x="-5.28" y="2.75" radius="0.18" width="0" layer="21"/>
          <wire x1="-5.08" y1="-5.08" x2="5.08" y2="-5.08" width="0.05" layer="39"/>
          <wire x1="5.08" y1="-5.08" x2="5.08" y2="5.08" width="0.05" layer="39"/>
          <wire x1="5.08" y1="5.08" x2="-5.08" y2="5.08" width="0.05" layer="39"/>
          <wire x1="-5.08" y1="5.08" x2="-5.08" y2="-5.08" width="0.05" layer="39"/>
          <text x="-5.08" y="5.68" size="1.0" layer="25">&gt;NAME</text>
          <text x="-5.08" y="-6.68" size="1.0" layer="27">&gt;VALUE</text>
        </package>
      </packages>
      <symbols>
        <symbol name="CH9104L_SYM">
          <wire x1="-15.24" y1="-31.75" x2="15.24" y2="-31.75" width="0.254" layer="94"/>
          <wire x1="15.24" y1="-31.75" x2="15.24" y2="31.75" width="0.254" layer="94"/>
          <wire x1="15.24" y1="31.75" x2="-15.24" y2="31.75" width="0.254" layer="94"/>
          <wire x1="-15.24" y1="31.75" x2="-15.24" y2="-31.75" width="0.254" layer="94"/>
          <text x="-15.24" y="33.02" size="1.778" layer="95">&gt;NAME</text>
          <text x="-15.24" y="-34.29" size="1.778" layer="96">&gt;VALUE</text>
          <pin name="GND" x="-20.32" y="29.21" length="middle" direction="io"/>
          <pin name="LOWPWR" x="-20.32" y="26.67" length="middle" direction="io"/>
          <pin name="DSR3/_GPIO32" x="-20.32" y="24.13" length="middle" direction="io"/>
          <pin name="GND_4" x="-20.32" y="21.59" length="middle" direction="io"/>
          <pin name="VCC" x="-20.32" y="19.05" length="middle" direction="io"/>
          <pin name="RTS0/_TNOW0/_GPIO05" x="-20.32" y="16.51" length="middle" direction="io"/>
          <pin name="CTS0/_GPIO04" x="-20.32" y="13.97" length="middle" direction="io"/>
          <pin name="TXD1" x="-20.32" y="11.43" length="middle" direction="io"/>
          <pin name="RXD1" x="-20.32" y="8.89" length="middle" direction="io"/>
          <pin name="RTS1/_TNOW1/_GPIO15" x="-20.32" y="6.35" length="middle" direction="io"/>
          <pin name="CTS1/_GPIO14" x="-20.32" y="3.81" length="middle" direction="io"/>
          <pin name="DTR1/_GPIO13" x="-20.32" y="1.27" length="middle" direction="io"/>
          <pin name="DSR1/_GPIO12" x="-20.32" y="-1.27" length="middle" direction="io"/>
          <pin name="DCD1/_GPIO11" x="-20.32" y="-3.81" length="middle" direction="io"/>
          <pin name="RI1/_RWK1/_GPIO10" x="-20.32" y="-6.35" length="middle" direction="io"/>
          <pin name="DTR0/GPIO03" x="-20.32" y="-8.89" length="middle" direction="io"/>
          <pin name="DSR0/_GPIO02" x="-20.32" y="-11.43" length="middle" direction="io"/>
          <pin name="VCC_18" x="-20.32" y="-13.97" length="middle" direction="io"/>
          <pin name="GND_19" x="-20.32" y="-16.51" length="middle" direction="io"/>
          <pin name="DCD0/_GPIO01" x="-20.32" y="-19.05" length="middle" direction="io"/>
          <pin name="RI0/_RWK0/_GPIO00" x="-20.32" y="-21.59" length="middle" direction="io"/>
          <pin name="TXD2" x="-20.32" y="-24.13" length="middle" direction="io"/>
          <pin name="RXD2" x="-20.32" y="-26.67" length="middle" direction="io"/>
          <pin name="RTS2/_TNOW2/_GPIO25" x="-20.32" y="-29.21" length="middle" direction="io"/>
          <pin name="CTS2/_GPIO24" x="20.32" y="-29.21" length="middle" direction="io" rot="R180"/>
          <pin name="DTR2/_GPIO23" x="20.32" y="-26.67" length="middle" direction="io" rot="R180"/>
          <pin name="DSR2/_GPIO22" x="20.32" y="-24.13" length="middle" direction="io" rot="R180"/>
          <pin name="DCD2/_GPIO21" x="20.32" y="-21.59" length="middle" direction="io" rot="R180"/>
          <pin name="RI2/_RWK2/_GPIO20" x="20.32" y="-19.05" length="middle" direction="io" rot="R180"/>
          <pin name="TXD0" x="20.32" y="-16.51" length="middle" direction="io" rot="R180"/>
          <pin name="RXD0" x="20.32" y="-13.97" length="middle" direction="io" rot="R180"/>
          <pin name="GND_32" x="20.32" y="-11.43" length="middle" direction="io" rot="R180"/>
          <pin name="VCC_33" x="20.32" y="-8.89" length="middle" direction="io" rot="R180"/>
          <pin name="DCD3/_GPIO31" x="20.32" y="-6.35" length="middle" direction="io" rot="R180"/>
          <pin name="CFG0" x="20.32" y="-3.81" length="middle" direction="io" rot="R180"/>
          <pin name="CFG1" x="20.32" y="-1.27" length="middle" direction="io" rot="R180"/>
          <pin name="RI3/_RWK3/_GPIO30" x="20.32" y="1.27" length="middle" direction="io" rot="R180"/>
          <pin name="TXD3" x="20.32" y="3.81" length="middle" direction="io" rot="R180"/>
          <pin name="RXD3" x="20.32" y="6.35" length="middle" direction="io" rot="R180"/>
          <pin name="GND_40" x="20.32" y="8.89" length="middle" direction="io" rot="R180"/>
          <pin name="GND_41" x="20.32" y="11.43" length="middle" direction="io" rot="R180"/>
          <pin name="UD-" x="20.32" y="13.97" length="middle" direction="io" rot="R180"/>
          <pin name="UD+" x="20.32" y="16.51" length="middle" direction="io" rot="R180"/>
          <pin name="NC" x="20.32" y="19.05" length="middle" direction="io" rot="R180"/>
          <pin name="VCC_45" x="20.32" y="21.59" length="middle" direction="io" rot="R180"/>
          <pin name="RTS3/_TNOW3/_GPIO35" x="20.32" y="24.13" length="middle" direction="io" rot="R180"/>
          <pin name="CTS3/_GPIO34" x="20.32" y="26.67" length="middle" direction="io" rot="R180"/>
          <pin name="DTR3/_GPIO33" x="20.32" y="29.21" length="middle" direction="io" rot="R180"/>
        </symbol>
      </symbols>
      <devicesets>
        <deviceset name="CH9104L" prefix="U">
          <gates>
            <gate name="G$1" symbol="CH9104L_SYM" x="0" y="0"/>
          </gates>
          <devices>
            <device name="" package="C22439562_LQFP-48_7x7">
              <connects>
                <connect gate="G$1" pin="GND" pad="1"/>
                <connect gate="G$1" pin="LOWPWR" pad="2"/>
                <connect gate="G$1" pin="DSR3/_GPIO32" pad="3"/>
                <connect gate="G$1" pin="GND_4" pad="4"/>
                <connect gate="G$1" pin="VCC" pad="5"/>
                <connect gate="G$1" pin="RTS0/_TNOW0/_GPIO05" pad="6"/>
                <connect gate="G$1" pin="CTS0/_GPIO04" pad="7"/>
                <connect gate="G$1" pin="TXD1" pad="8"/>
                <connect gate="G$1" pin="RXD1" pad="9"/>
                <connect gate="G$1" pin="RTS1/_TNOW1/_GPIO15" pad="10"/>
                <connect gate="G$1" pin="CTS1/_GPIO14" pad="11"/>
                <connect gate="G$1" pin="DTR1/_GPIO13" pad="12"/>
                <connect gate="G$1" pin="DSR1/_GPIO12" pad="13"/>
                <connect gate="G$1" pin="DCD1/_GPIO11" pad="14"/>
                <connect gate="G$1" pin="RI1/_RWK1/_GPIO10" pad="15"/>
                <connect gate="G$1" pin="DTR0/GPIO03" pad="16"/>
                <connect gate="G$1" pin="DSR0/_GPIO02" pad="17"/>
                <connect gate="G$1" pin="VCC_18" pad="18"/>
                <connect gate="G$1" pin="GND_19" pad="19"/>
                <connect gate="G$1" pin="DCD0/_GPIO01" pad="20"/>
                <connect gate="G$1" pin="RI0/_RWK0/_GPIO00" pad="21"/>
                <connect gate="G$1" pin="TXD2" pad="22"/>
                <connect gate="G$1" pin="RXD2" pad="23"/>
                <connect gate="G$1" pin="RTS2/_TNOW2/_GPIO25" pad="24"/>
                <connect gate="G$1" pin="CTS2/_GPIO24" pad="25"/>
                <connect gate="G$1" pin="DTR2/_GPIO23" pad="26"/>
                <connect gate="G$1" pin="DSR2/_GPIO22" pad="27"/>
                <connect gate="G$1" pin="DCD2/_GPIO21" pad="28"/>
                <connect gate="G$1" pin="RI2/_RWK2/_GPIO20" pad="29"/>
                <connect gate="G$1" pin="TXD0" pad="30"/>
                <connect gate="G$1" pin="RXD0" pad="31"/>
                <connect gate="G$1" pin="GND_32" pad="32"/>
                <connect gate="G$1" pin="VCC_33" pad="33"/>
                <connect gate="G$1" pin="DCD3/_GPIO31" pad="34"/>
                <connect gate="G$1" pin="CFG0" pad="35"/>
                <connect gate="G$1" pin="CFG1" pad="36"/>
                <connect gate="G$1" pin="RI3/_RWK3/_GPIO30" pad="37"/>
                <connect gate="G$1" pin="TXD3" pad="38"/>
                <connect gate="G$1" pin="RXD3" pad="39"/>
                <connect gate="G$1" pin="GND_40" pad="40"/>
                <connect gate="G$1" pin="GND_41" pad="41"/>
                <connect gate="G$1" pin="UD-" pad="42"/>
                <connect gate="G$1" pin="UD+" pad="43"/>
                <connect gate="G$1" pin="NC" pad="44"/>
                <connect gate="G$1" pin="VCC_45" pad="45"/>
                <connect gate="G$1" pin="RTS3/_TNOW3/_GPIO35" pad="46"/>
                <connect gate="G$1" pin="CTS3/_GPIO34" pad="47"/>
                <connect gate="G$1" pin="DTR3/_GPIO33" pad="48"/>
              </connects>
            </device>
          </devices>
        </deviceset>
      </devicesets>
    </library>
  </drawing>
</eagle>
