main
Ray Set visibility: public 6f494ae 12d ago
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  "slug": "ds34c87n",
  "title": "DS34C87N",
  "brief": "HGSEMI RS-485 / RS-422 ICs, DIP-16. Pinout reviewed by a person against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
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    "mpn": "DS34C87N",
    "manufacturer": "HGSEMI",
    "package": "DIP-16",
    "pin_count": 16,
    "category": "Interface",
    "subcategory": "RS-485 / RS-422 ICs",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8758163152771133440",
    "parts": {
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      "footprint": "ds34c87n.kicad_mod",
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      "model_3d_step_plain": "ds34c87n.step",
      "lbr": "ds34c87n.lbr"
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    "distributor_links": {
      "lcsc": "C434594"
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    "distributor_check": {
      "checked_at": "2026-10-21T16:43:56Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
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      "mouser": {
        "pn": null,
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    "pins": [
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        "number": "1",
        "name": "INPUT A",
        "type": "input",
        "description": "Driver A TTL/CMOS input, with input range 0 V to VCC and protected by ESD diodes to VCC and ground."
      },
      {
        "number": "2",
        "name": "OUTPUTS A (1)",
        "type": "tri_state",
        "description": "First of the two complementary RS-422 differential outputs of driver A, which is TRI-STATE when the A/B control input is low."
      },
      {
        "number": "3",
        "name": "OUTPUTS A (2)",
        "type": "tri_state",
        "description": "Second of the two complementary RS-422 differential outputs of driver A, which is TRI-STATE when the A/B control input is low."
      },
      {
        "number": "4",
        "name": "A/B CONTROL",
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        "description": "Output control input shared by drivers A and B; high enables their outputs and low puts them in TRI-STATE (high impedance)."
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      {
        "number": "5",
        "name": "OUTPUTS B (1)",
        "type": "tri_state",
        "description": "First of the two complementary RS-422 differential outputs of driver B, which is TRI-STATE when the A/B control input is low."
      },
      {
        "number": "6",
        "name": "OUTPUTS B (2)",
        "type": "tri_state",
        "description": "Second of the two complementary RS-422 differential outputs of driver B, which is TRI-STATE when the A/B control input is low."
      },
      {
        "number": "7",
        "name": "INPUT B",
        "type": "input",
        "description": "Driver B TTL/CMOS input, with input range 0 V to VCC and protected by ESD diodes to VCC and ground."
      },
      {
        "number": "8",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the device."
      },
      {
        "number": "9",
        "name": "INPUT C",
        "type": "input",
        "description": "Driver C TTL/CMOS input, with input range 0 V to VCC and protected by ESD diodes to VCC and ground."
      },
      {
        "number": "10",
        "name": "OUTPUTS C (1)",
        "type": "tri_state",
        "description": "First of the two complementary RS-422 differential outputs of driver C, which is TRI-STATE when the C/D control input is low."
      },
      {
        "number": "11",
        "name": "OUTPUTS C (2)",
        "type": "tri_state",
        "description": "Second of the two complementary RS-422 differential outputs of driver C, which is TRI-STATE when the C/D control input is low."
      },
      {
        "number": "12",
        "name": "C/D CONTROL",
        "type": "input",
        "description": "Output control input shared by drivers C and D; high enables their outputs and low puts them in TRI-STATE (high impedance)."
      },
      {
        "number": "13",
        "name": "OUTPUTS D (1)",
        "type": "tri_state",
        "description": "First of the two complementary RS-422 differential outputs of driver D, which is TRI-STATE when the C/D control input is low."
      },
      {
        "number": "14",
        "name": "OUTPUTS D (2)",
        "type": "tri_state",
        "description": "Second of the two complementary RS-422 differential outputs of driver D, which is TRI-STATE when the C/D control input is low."
      },
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      "Manufacturer": "HGSEMI",
      "Package": "DIP-16",
      "Category": "Interface",
      "Pins": "16"
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          "max": null,
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          "conditions": "RL=100Ω (NOTE 5)",
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          "conditions": "RL=100Ω (NOTE 5)",
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          "name": "Difference In Common Mode Output Voltage",
          "symbol": "|VOS|-|VOS|",
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          "name": "Input Current",
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          "kind": "electrical",
          "unit": "µA",
          "min": -10,
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          "conditions": "VIN =VCC,GND,VIH, OR VIL",
          "source_page": 3,
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          "name": "Quiescent Supply Current",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 200,
          "conditions": "IOUT =0µA, VIN = VCC OR GND",
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        {
          "name": "Quiescent Supply Current",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "mA",
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          "typ": null,
          "max": 0.8,
          "conditions": "VIN =2.4V OR 0.5V (NOTE 6)",
          "source_page": 3,
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        {
          "name": "Tri-State Output Leakage Current",
          "symbol": "IOZ",
          "kind": "electrical",
          "unit": "µA",
          "min": -0.5,
          "typ": null,
          "max": 0.5,
          "conditions": "VOUT = VCC OR GND, CONTROL=VIL",
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          "kind": "electrical",
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          "name": "Output Leakage Current Power Off",
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          "name": "Output Leakage Current Power Off",
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          "kind": "electrical",
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          "conditions": "VCC=0V, VOUT=-0.25V",
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          "name": "Supply Voltage",
          "symbol": "VCC",
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          "min": 4.5,
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        {
          "name": "DC Input or Output Voltage",
          "symbol": "Vin, Vout",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 0,
          "typ": null,
          "max": null,
          "conditions": "MAX printed as VCC",
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          "name": "Operating Temperature Range",
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          "unit": "℃",
          "min": -40,
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          "conditions": "",
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          "name": "Input Rise Or Fall Times",
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          "kind": "recommended_operating",
          "unit": "ns",
          "min": null,
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          "name": "Supply Voltage",
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          "max": 7,
          "conditions": "Notes 1 & 2",
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          "name": "DC Voltage",
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          "kind": "absolute_maximum",
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          "min": -1.5,
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          "conditions": "MAX printed as VCC+1.5",
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          "name": "DC Output Voltage",
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          "kind": "absolute_maximum",
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          "min": -150,
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          "conditions": "",
          "source_page": 2,
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          "name": "Storage Temperature Range",
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          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 2,
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        {
          "name": "Power Dissipation",
          "symbol": "PO",
          "kind": "absolute_maximum",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 500,
          "conditions": "Note 3",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Lead Temperature (soldering 10 sec)",
          "symbol": "TL",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": null,
          "typ": null,
          "max": 260,
          "conditions": "Soldering 10 sec",
          "source_page": 2,
          "source": "datasheet"
        }
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    "name": "Ray",
    "email": "[email protected]"
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