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  (title_block
    (title "icE1usb RS422 extension")
    (date "2022-08-15")
    (rev "0.1")
  )
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    )
    (path
      (reference "J1") (unit 1) (value "EXT_IN") (footprint "Connector_PinSocket_2.54mm:PinSocket_2x04_P2.54mm_Vertical")
    )
    (path
      (reference "J2") (unit 1) (value "EXT_OUT") (footprint "Connector_PinSocket_2.54mm:PinSocket_2x04_P2.54mm_Vertical")
    )
    (path
      (reference "R1") (unit 1) (value "120R") (footprint "Resistor_SMD:R_0603_1608Metric")
    )
    (path
      (reference "R2") (unit 1) (value "120R") (footprint "Resistor_SMD:R_0603_1608Metric")
    )
    (path
      (reference "R3") (unit 1) (value "120R") (footprint "Resistor_SMD:R_0603_1608Metric")
    )
    (path
      (reference "R4") (unit 1) (value "1k") (footprint "Resistor_SMD:R_0603_1608Metric")
    )
    (path
      (reference "R5") (unit 1) (value "10k") (footprint "Resistor_SMD:R_0603_1608Metric")
    )
    (path
      (reference "R6") (unit 1) (value "10k") (footprint "Resistor_SMD:R_0603_1608Metric")
    )
    (path
      (reference "R7") (unit 1) (value "10k") (footprint "Resistor_SMD:R_0603_1608Metric")
    )
    (path
      (reference "R8") (unit 1) (value "10k") (footprint "Resistor_SMD:R_0603_1608Metric")
    )
    (path
      (reference "R9") (unit 1) (value "10k") (footprint "Resistor_SMD:R_0603_1608Metric")
    )
    (path
      (reference "R10") (unit 1) (value "10k") (footprint "Resistor_SMD:R_0603_1608Metric")
    )
    (path
      (reference "R11") (unit 1) (value "10k") (footprint "Resistor_SMD:R_0603_1608Metric")
    )
    (path
      (reference "R12") (unit 1) (value "10k") (footprint "Resistor_SMD:R_0603_1608Metric")
    )
    (path
      (reference "R13") (unit 1) (value "10k") (footprint "Resistor_SMD:R_0603_1608Metric")
    )
    (path
      (reference "R14") (unit 1) (value "10k") (footprint "Resistor_SMD:R_0603_1608Metric")
    )
    (path
      (reference "R15") (unit 1) (value "10k") (footprint "Resistor_SMD:R_0603_1608Metric")
    )
    (path
      (reference "R16") (unit 1) (value "10k") (footprint "Resistor_SMD:R_0603_1608Metric")
    )
    (path
      (reference "U1") (unit 1) (value "74LVC2G125") (footprint "Package_SO:TSSOP-8_3x3mm_P0.65mm")
    )
    (path
      (reference "U1") (unit 2) (value "74LVC2G125") (footprint "Package_SO:TSSOP-8_3x3mm_P0.65mm")
    )
    (path
      (reference "U2") (unit 1) (value "74LVC2G125") (footprint "Package_SO:TSSOP-8_3x3mm_P0.65mm")
    )
    (path
      (reference "U2") (unit 2) (value "74LVC2G125") (footprint "Package_SO:TSSOP-8_3x3mm_P0.65mm")
    )
    (path
      (reference "U3") (unit 1) (value "74LVC2G125") (footprint "Package_SO:TSSOP-8_3x3mm_P0.65mm")
    )
    (path
      (reference "U3") (unit 2) (value "74LVC2G125") (footprint "Package_SO:TSSOP-8_3x3mm_P0.65mm")
    )
    (path
      (reference "U4") (unit 1) (value "Si8663") (footprint "Package_SO:SSOP-16_3.9x4.9mm_P0.635mm")
    )
    (path
      (reference "U5") (unit 1) (value "Si8400") (footprint "Package_SO:SOIC-8_3.9x4.9mm_P1.27mm")
    )
    (path
      (reference "U6") (unit 1) (value "TCA9534") (footprint "Package_SO:SOIC-16W_7.5x10.3mm_P1.27mm")
    )
    (path
      (reference "U7") (unit 1) (value "TCA9534") (footprint "Package_SO:SOIC-16W_7.5x10.3mm_P1.27mm")
    )
    (path
      (reference "U8") (unit 1) (value "SP485") (footprint "Package_SO:SOIC-8_3.9x4.9mm_P1.27mm")
    )
    (path
      (reference "U9") (unit 1) (value "SP485") (footprint "Package_SO:SOIC-8_3.9x4.9mm_P1.27mm")
    )
    (path
      (reference "U10") (unit 1) (value "SP485") (footprint "Package_SO:SOIC-8_3.9x4.9mm_P1.27mm")
    )
    (path
      (reference "U11") (unit 1) (value "MC78M05_TO252") (footprint "Package_TO_SOT_SMD:TO-252-2")
    )
    (path
      (reference "U12") (unit 1) (value "M24C02-FMN") (footprint "Package_SO:SOIC-8_3.9x4.9mm_P1.27mm")
    )
  )
)
