SN65HVD55DR

{
  "schema_version": 1,
  "type": "component",
  "slug": "sn65hvd55dr",
  "title": "SN65HVD55DR",
  "brief": "Texas Instruments RS-485/RS-422 ICs, SOIC-14. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "communication interface chip-uart-485-232",
    "sn65hvd55dr",
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    "extractor-text"
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  "component": {
    "mpn": "SN65HVD55DR",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-14",
    "pin_count": 14,
    "category": "Communication Interface Chip/UART/485/232",
    "subcategory": "RS-485/RS-422 ICs",
    "datasheet": "https://www.ti.com/lit/ds/symlink/sn65hvd55.pdf",
    "parts": {
      "symbol": "sn65hvd55dr.kicad_sym",
      "footprint": "sn65hvd55dr.kicad_mod",
      "model_3d": "sn65hvd55dr-hero.glb",
      "model_3d_plain": "sn65hvd55dr-etched.glb",
      "model_3d_step": "sn65hvd55dr-etched.step",
      "model_3d_step_plain": "sn65hvd55dr.step",
      "lbr": "sn65hvd55dr.lbr"
    },
    "distributor_links": {
      "lcsc": "C2865813",
      "digikey": "296-18709-2-ND",
      "mouser": "595-SN65HVD55DR"
    },
    "distributor_check": {
      "checked_at": "2026-10-31T00:36:44Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-18709-2-ND",
        "status": "found"
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      "mouser": {
        "pn": "595-SN65HVD55DR",
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    },
    "pins": [
      {
        "number": "1",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection."
      },
      {
        "number": "2",
        "name": "R",
        "type": "output",
        "description": "Receiver output, driven according to the bus inputs A and B when the receiver is enabled (RE low), with 8 mA maximum high/low output current."
      },
      {
        "number": "3",
        "name": "RE",
        "type": "input",
        "description": "Active-low receiver enable; with DE low and RE high for 300 ns or more the device enters low-power standby mode."
      },
      {
        "number": "4",
        "name": "DE",
        "type": "input",
        "description": "Active-high driver enable; with DE low and RE high for 300 ns or more the device enters low-power standby mode."
      },
      {
        "number": "5",
        "name": "D",
        "type": "input",
        "description": "Driver data input; if left open when the driver is enabled, the driver outputs default to A high and B low."
      },
      {
        "number": "6",
        "name": "GND",
        "type": "power_in",
        "description": "Ground connection (network ground reference for all voltages except differential bus voltages)."
      },
      {
        "number": "7",
        "name": "GND",
        "type": "power_in",
        "description": "Ground connection (network ground reference for all voltages except differential bus voltages)."
      },
      {
        "number": "8",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection."
      },
      {
        "number": "9",
        "name": "Y",
        "type": "tri_state",
        "description": "Non-inverting 3-state driver output on the bus, rated for -7 V to 12 V common-mode and up to 60 mA output current."
      },
      {
        "number": "10",
        "name": "Z",
        "type": "tri_state",
        "description": "Inverting 3-state driver output on the bus, rated for -7 V to 12 V common-mode and up to 60 mA output current."
      },
      {
        "number": "11",
        "name": "B",
        "type": "input",
        "description": "Inverting differential receiver input, operating over -7 V to 12 V with differential input up to ±12 V."
      },
      {
        "number": "12",
        "name": "A",
        "type": "input",
        "description": "Non-inverting differential receiver input, operating over -7 V to 12 V with differential input up to ±12 V."
      },
      {
        "number": "13",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage, 4.5 V to 5.5 V recommended (absolute maximum 6 V)."
      },
      {
        "number": "14",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage, 4.5 V to 5.5 V recommended (absolute maximum 6 V)."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
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        "primary_model": "claude-haiku-5-5",
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        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Figure 6-2 text extraction lists the 14 pin names in order without explicit pin numbers. Numbers wer; The Figure 9-1 logic diagram labels pin numbers (4, 5, 9, 10, 11, 12, 2, 3) that do not match the Fi; The datasheet describes separate driver and receiver pins for full duplex but does not explicitly la"
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        "pages_sent": 11,
        "cost_usd": 0.0629,
        "at": "2026-10-31T00:36:25"
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      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/sn65hvd55.pdf",
        "pages": 35,
        "sha256": "f0a968fd6764b7d7",
        "source_tier": "mfr"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 14,
        "described": 14,
        "cites_pages": true,
        "refuses_to_fabricate": true
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    },
    "viewers": {
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      "footprint": "viewers/footprint.html"
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        "extents_mm": [
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        "checked": "2026-10-31",
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    "package_dims": {
      "package_code": "D0014A",
      "source_page": 29,
      "D": {
        "nom_mm": 8.65,
        "range_mm": [
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      "E1": {
        "nom_mm": 3.9,
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      },
      "E": {
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "SOIC-14",
      "Category": "Communication Interface Chip/UART/485/232",
      "Pins": "14"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
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      "rows": [
        {
          "name": "Supply voltage",
          "symbol": "VCC",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 4.5,
          "typ": null,
          "max": 5.5,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Voltage at any bus terminal (separately or common mode)",
          "symbol": "VI or VIC",
          "kind": "recommended_operating",
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          "min": -7,
          "typ": null,
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          "conditions": "",
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        },
        {
          "name": "Signaling rate (SN65HVD52, SN65HVD55 grade)",
          "symbol": "1/tUI",
          "kind": "recommended_operating",
          "unit": "Mbps",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "SN65HVD52, SN65HVD55",
          "source_page": 6,
          "source": "datasheet"
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        {
          "name": "Differential load resistance",
          "symbol": "RL",
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          "unit": "Ω",
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        {
          "name": "High-level input voltage D, DE, RE",
          "symbol": "VIH",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2,
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          "max": null,
          "conditions": "Maximum is VCC",
          "source_page": 6,
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        {
          "name": "Low-level input voltage D, DE, RE",
          "symbol": "VIL",
          "kind": "recommended_operating",
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          "max": 0.8,
          "conditions": "",
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        {
          "name": "Differential input voltage",
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          "kind": "recommended_operating",
          "unit": "V",
          "min": -12,
          "typ": null,
          "max": 12,
          "conditions": "",
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        },
        {
          "name": "High-level output current, driver",
          "symbol": "IOH",
          "kind": "recommended_operating",
          "unit": "mA",
          "min": -60,
          "typ": null,
          "max": null,
          "conditions": "Driver",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "High-level output current, receiver",
          "symbol": "IOH",
          "kind": "recommended_operating",
          "unit": "mA",
          "min": -8,
          "typ": null,
          "max": null,
          "conditions": "Receiver",
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          "source": "datasheet"
        },
        {
          "name": "Low-level output current, driver",
          "symbol": "IOL",
          "kind": "recommended_operating",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 60,
          "conditions": "Driver",
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        {
          "name": "Low-level output current, receiver",
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          "kind": "recommended_operating",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 8,
          "conditions": "Receiver",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Junction temperature",
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          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
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        {
          "name": "Supply voltage range",
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          "conditions": "",
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        {
          "name": "Voltage input, transient pulse (A, B, Y, Z)",
          "symbol": "V(TRANS)",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -50,
          "typ": null,
          "max": 50,
          "conditions": "Through 100 Ω, see Figure 8-12",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Voltage input range (D, DE, RE)",
          "symbol": "VI",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.5,
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        {
          "name": "Output current (receiver output only)",
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          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 11,
          "conditions": "Receiver output only",
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          "source": "datasheet"
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        {
          "name": "Input clamp voltage",
          "symbol": "VI(K)",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": -1.5,
          "conditions": "II = –18 mA",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Steady-state differential output voltage, no load",
          "symbol": "|VOD(SS)|",
          "kind": "electrical",
          "unit": "V",
          "min": 4,
          "typ": null,
          "max": null,
          "conditions": "IO = 0; maximum is VCC",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Steady-state differential output voltage (RS-485)",
          "symbol": "|VOD(SS)|",
          "kind": "electrical",
          "unit": "V",
          "min": 1.7,
          "typ": 2.6,
          "max": null,
          "conditions": "RL = 54 Ω, See Figure 8-1 (RS-485)",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Steady-state differential output voltage (RS-422)",
          "symbol": "|VOD(SS)|",
          "kind": "electrical",
          "unit": "V",
          "min": 2.4,
          "typ": 3.2,
          "max": null,
          "conditions": "RL = 100 Ω, See Figure 8-1 (RS-422)",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Differential output voltage overshoot and undershoot",
          "symbol": "VOD(RING)",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": null,
          "max": 10,
          "conditions": "RL = 54 Ω, CL = 50 pF, See Figure 8-5",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Peak-to-peak common-mode output voltage (HVD52, HVD55)",
          "symbol": "VOC(PP)",
          "kind": "electrical",
          "unit": "V",
          "min": 0.4,
          "typ": null,
          "max": null,
          "conditions": "See Figure 8-4",
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          "source": "datasheet"
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        {
          "name": "Steady-state common-mode output voltage",
          "symbol": "VOC(SS)",
          "kind": "electrical",
          "unit": "V",
          "min": 2.2,
          "typ": null,
          "max": 3.3,
          "conditions": "See Figure 8-4",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "High-impedance state output current (HVD53, HVD54, HVD55)",
          "symbol": "IZ(Z) or IY(Z)",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": null,
          "max": 90,
          "conditions": "VCC = 5 V or 0 V, DE = 0 V, VZ or VY = 12 V, other input at 0 V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "High-impedance state output current (HVD53, HVD54, HVD55)",
          "symbol": "IZ(Z) or IY(Z)",
          "kind": "electrical",
          "unit": "μA",
          "min": -10,
          "typ": null,
          "max": null,
          "conditions": "VCC = 5 V or 0 V, DE = 0 V, VZ or VY = –7 V, other input at 0 V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Short-circuit output current",
          "symbol": "IZ(S) or IY(S)",
          "kind": "electrical",
          "unit": "mA",
          "min": -250,
          "typ": null,
          "max": 250,
          "conditions": "VZ or VY = –7 V, other input at 0 V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Input current (D, DE)",
          "symbol": "II",
          "kind": "electrical",
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          "typ": null,
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          "conditions": "",
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        {
          "name": "Propagation delay time, low-to-high-level output (HVD52, HVD55)",
          "symbol": "tPLH",
          "kind": "timing",
          "unit": "ns",
          "min": 90,
          "typ": 143,
          "max": 230,
          "conditions": "RL = 54 Ω, CL = 50 pF, See Figure 8-5",
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        {
          "name": "Propagation delay time, high-to-low-level output (HVD52, HVD55)",
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          "conditions": "RL = 54 Ω, CL = 50 pF, See Figure 8-5",
          "source_page": 8,
          "source": "datasheet"
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          "name": "Differential output signal rise time (HVD52, HVD55)",
          "symbol": "tr",
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          "conditions": "RL = 54 Ω, CL = 50 pF, See Figure 8-5",
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          "name": "Differential output signal fall time (HVD52, HVD55)",
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          "conditions": "RL = 54 Ω, CL = 50 pF, See Figure 8-5",
          "source_page": 8,
          "source": "datasheet"
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        {
          "name": "Propagation delay time, high-impedance-to-high-level output (HVD55)",
          "symbol": "tPZH1",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": null,
          "max": 380,
          "conditions": "RL = 110 Ω, RE at 0 V, See Figure 8-6; D = 3 V and S1 = Y, D = 0 V and S1 = Z",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Propagation delay time, high-level-to-high-impedance output (HVD55)",
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          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": null,
          "max": 110,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Propagation delay time, high-impedance-to-low-level output (HVD55)",
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          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": null,
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          "conditions": "RL = 110 Ω, RE at 0 V, See Figure 8-7; D = 3 V and S1 = Z, D = 0 V and S1 = Y",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Propagation delay time, low-level-to-high-impedance output (HVD55)",
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          "conditions": "",
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        {
          "name": "Propagation delay time, standby-to-high-level output",
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          "kind": "timing",
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          "min": null,
          "typ": null,
          "max": 3300,
          "conditions": "RL = 110 Ω, RE at 3 V, See Figure 8-6; D = 3 V and S1 = Y, D = 0 V and S1 = Z",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Propagation delay time, standby-to-low-level output",
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          "min": null,
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          "conditions": "RL = 110 Ω, RE at 3 V, See Figure 8-7; D = 3 V and S1 = Z, D = 0 V and S1 = Y",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Positive-going differential input threshold voltage",
          "symbol": "VIT+",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": -0.02,
          "conditions": "IO = –8 mA",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Negative-going differential input threshold voltage",
          "symbol": "VIT-",
          "kind": "electrical",
          "unit": "V",
          "min": -0.2,
          "typ": null,
          "max": null,
          "conditions": "IO = 8 mA",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Output voltage",
          "symbol": "VO",
          "kind": "electrical",
          "unit": "V",
          "min": 4,
          "typ": null,
          "max": null,
          "conditions": "VID = 200 mV, IO = –8 mA, See Figure 8-8",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Output voltage",
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          "unit": "V",
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