CA-IF4850HM

{
  "schema_version": 1,
  "type": "component",
  "slug": "ca-if4850hm",
  "title": "CA-IF4850HM",
  "brief": "Chipanalog RS-485 / RS-422 ICs, MSOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "interface",
    "ca-if4850hm",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "CA-IF4850HM",
    "manufacturer": "Chipanalog",
    "package": "MSOP-8",
    "pin_count": 8,
    "category": "Interface",
    "subcategory": "RS-485 / RS-422 ICs",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/7be6e932064283b986e2e22bd7118bfe.pdf",
    "parts": {
      "symbol": "ca-if4850hm.kicad_sym",
      "footprint": "ca-if4850hm.kicad_mod",
      "model_3d": "ca-if4850hm-hero.glb",
      "model_3d_plain": "ca-if4850hm-etched.glb",
      "model_3d_step": "ca-if4850hm-etched.step",
      "model_3d_step_plain": "ca-if4850hm.step",
      "lbr": "ca-if4850hm.lbr"
    },
    "distributor_links": {
      "lcsc": "C42370079"
    },
    "distributor_check": {
      "checked_at": "2026-10-27T06:43:37Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "RO",
        "type": "output",
        "description": "Receiver output: RO goes high when VA-VB > VTH+ and low when VA-VB < VTH- while REB is low, and is high-impedance when REB is high."
      },
      {
        "number": "2",
        "name": "REB",
        "type": "input",
        "description": "Active-low receiver enable: the receiver is enabled when REB is low or tied to GND, and its output is high-impedance when REB is high; REB is internally pulled up to VCC."
      },
      {
        "number": "3",
        "name": "DE",
        "type": "input",
        "description": "Active-high driver enable: the driver is enabled when DE is high, and A and B are high-impedance when DE is low or open; DE has an internal pull-down."
      },
      {
        "number": "4",
        "name": "DI",
        "type": "input",
        "description": "Driver data input: with DE high, DI high drives A high and B low, and DI low drives A low and B high; DI is internally pulled up to VCC."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the device."
      },
      {
        "number": "6",
        "name": "A",
        "type": "bidirectional",
        "description": "RS-485/RS-422 bus non-inverting receiver input and driver output; bus voltage range is ±30 V fault-protected and common-mode range is ±15 V."
      },
      {
        "number": "7",
        "name": "B",
        "type": "bidirectional",
        "description": "RS-485/RS-422 bus inverting receiver input and driver output; bus voltage range is ±30 V fault-protected and common-mode range is ±15 V."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply input for 3.0 V to 5.5 V operation; a bypass capacitor of at least 0.1 µF should be placed close to this pin between VCC and GND."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
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        "primary_model": "claude-haiku-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed (audit)",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [],
        "pages_sent": 24,
        "cost_usd": 0.0231,
        "at": "2026-10-27T06:43:18"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/7be6e932064283b986e2e22bd7118bfe.pdf",
        "pages": 24,
        "sha256": "d2cc24cdb3826f33",
        "source_tier": "lcsc"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
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        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "847c4c5023fe1603fbd36900a5dcc4bd3901ba473f71d42c9a469f0236eaadf3",
        "checked": "2026-10-27",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "Chipanalog",
      "Package": "MSOP-8",
      "Category": "Interface",
      "Pins": "8"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "d2cc24cdb3826f332ab59a7785d329053f3e142162fae542ce85c3cd0885d4df",
      "rows": [
        {
          "name": "Supply voltage",
          "symbol": "VCC",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 7,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Bus terminal voltage A,B,Z,Y",
          "symbol": "VIO",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -30,
          "typ": null,
          "max": 30,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Logic input voltage DI,DE,REB",
          "symbol": "VIO",
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          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 7,
          "conditions": "",
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        },
        {
          "name": "Logic output voltage RO",
          "symbol": "VIO",
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          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "max printed as VCC+0.3 V",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Junction temperature",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
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        {
          "name": "Storage temperature range",
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          "unit": "°C",
          "min": -65,
          "typ": null,
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        {
          "name": "Analog supply voltage",
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          "min": 3,
          "typ": null,
          "max": 5.5,
          "conditions": "typ printed as 3.3/5.0",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Bus input voltage",
          "symbol": "VIN",
          "kind": "recommended_operating",
          "unit": "V",
          "min": -15,
          "typ": null,
          "max": 15,
          "conditions": "",
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        },
        {
          "name": "Low-level input threshold",
          "symbol": "VIL",
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          "unit": "V",
          "min": 0,
          "typ": null,
          "max": 0.8,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "High-level input threshold",
          "symbol": "VIH",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2,
          "typ": null,
          "max": null,
          "conditions": "max printed as VCC",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Differential load resistance",
          "symbol": "RL",
          "kind": "recommended_operating",
          "unit": "Ohm",
          "min": 54,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Data rate CA-IF4850",
          "symbol": "1/tUI",
          "kind": "recommended_operating",
          "unit": "Mbps",
          "min": null,
          "typ": null,
          "max": 50,
          "conditions": "",
          "source_page": 6,
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        },
        {
          "name": "Ambient temperature",
          "symbol": "TA",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 6,
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          "name": "Junction temperature operating",
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          "min": -40,
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          "max": 150,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Bus output differential voltage",
          "symbol": "|VOD|",
          "kind": "electrical",
          "unit": "V",
          "min": 1,
          "typ": 1.5,
          "max": 2.4,
          "conditions": "VCC=3.3V, RL=60 Ohm, -15 V ≤ Vtest ≤ 15 V (Fig 8-1)",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Bus output differential voltage",
          "symbol": "|VOD|",
          "kind": "electrical",
          "unit": "V",
          "min": 2.1,
          "typ": null,
          "max": null,
          "conditions": "RL=60 Ohm, -15 V ≤ Vtest ≤ 15 V, 4.5 V ≤ VCC ≤ 5.5 V (Fig 8-1)",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Bus output differential voltage",
          "symbol": "|VOD|",
          "kind": "electrical",
          "unit": "V",
          "min": 2,
          "typ": null,
          "max": 4,
          "conditions": "VCC=5.0V, RL = 100 Ohm (Fig 8-2)",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Bus output differential voltage",
          "symbol": "|VOD|",
          "kind": "electrical",
          "unit": "V",
          "min": 1.5,
          "typ": null,
          "max": 2.7,
          "conditions": "VCC=3.3V, RL = 100 Ohm (Fig 8-2)",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Bus output differential voltage",
          "symbol": "|VOD|",
          "kind": "electrical",
          "unit": "V",
          "min": 1.5,
          "typ": null,
          "max": 3.7,
          "conditions": "VCC=5.0V, RL = 54 Ohm (Fig 8-2)",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Bus output differential voltage",
          "symbol": "|VOD|",
          "kind": "electrical",
          "unit": "V",
          "min": 1.5,
          "typ": null,
          "max": 2.4,
          "conditions": "VCC=3.3V, RL = 54 Ohm (Fig 8-2)",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Change in differential output voltage",
          "symbol": "Δ|VOD|",
          "kind": "electrical",
          "unit": "mV",
          "min": -200,
          "typ": null,
          "max": 200,
          "conditions": "VCC=3.3V/5.0V, RL = 54 Ohm (Fig 8-2)",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Common-mode output voltage",
          "symbol": "VOC",
          "kind": "electrical",
          "unit": "V",
          "min": 1,
          "typ": null,
          "max": 3,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Change in common-mode output voltage",
          "symbol": "ΔVOC(SS)",
          "kind": "electrical",
          "unit": "mV",
          "min": -200,
          "typ": null,
          "max": 200,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Short-circuit output current",
          "symbol": "IOS",
          "kind": "electrical",
          "unit": "mA",
          "min": -250,
          "typ": null,
          "max": 250,
          "conditions": "VCC=3.3V/5.0V, -7 V ≤ VO ≤ 12 V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Bus input current",
          "symbol": "II",
          "kind": "electrical",
          "unit": "µA",
          "min": 75,
          "typ": null,
          "max": 125,
          "conditions": "DE = 0 V, VCC = 0V/3.3V/5.0V, VI = 12V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Bus input current",
          "symbol": "II",
          "kind": "electrical",
          "unit": "µA",
          "min": -100,
          "typ": null,
          "max": -43,
          "conditions": "DE = 0 V, VCC = 0V/3.3V/5.0V, VI = -7V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Bus input current",
          "symbol": "II",
          "kind": "electrical",
          "unit": "µA",
          "min": 91,
          "typ": null,
          "max": 125,
          "conditions": "DE = 0 V, VCC = 0V/3.3V/5.0V, VI = 15V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Bus input current",
          "symbol": "II",
          "kind": "electrical",
          "unit": "µA",
          "min": -200,
          "typ": null,
          "max": -97,
          "conditions": "DE = 0 V, VCC = 0V/3.3V/5.0V, VI = -15V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "High-level input threshold",
          "symbol": "VTH+",
          "kind": "electrical",
          "unit": "mV",
          "min": -100,
          "typ": null,
          "max": -20,
          "conditions": "VCC = 3.3V/5.0V, common-mode voltage range",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Low-level input threshold",
          "symbol": "VTH-",
          "kind": "electrical",
          "unit": "mV",
          "min": -200,
          "typ": null,
          "max": -130,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Input hysteresis voltage",
          "symbol": "VHYS",
          "kind": "electrical",
          "unit": "mV",
          "min": 30,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Low-level output voltage",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": 0.2,
          "typ": null,
          "max": 0.4,
          "conditions": "VCC = 3.3V/5.0V, IOL = 4 mA",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "High-impedance output leakage current",
          "symbol": "IOZR",
          "kind": "electrical",
          "unit": "µA",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "VCC = 3.3V/5.0V, VO = 0 V or VCC, REB= VCC",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Logic input current",
          "symbol": "IIN",
          "kind": "electrical",
          "unit": "µA",
          "min": -6.2,
          "typ": null,
          "max": 6.2,
          "conditions": "3 V ≤ VCC ≤ 5.5 V, 0 V ≤ VIN ≤ VCC",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Operating supply current (static)",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "mA",
          "min": 0.4,
          "typ": null,
          "max": 1.2,
          "conditions": "VCC=5.0V, driver and receiver enabled, REB=0V, DE = VCC, no load; typ printed 0.8",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Operating supply current (static)",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "mA",
          "min": 0.7,
          "typ": null,
          "max": 1.1,
          "conditions": "VCC=3.3V, driver and receiver enabled, REB=0V, DE = VCC, no load",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Operating supply current (static)",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "mA",
          "min": 0.8,
          "typ": null,
          "max": 1.2,
          "conditions": "VCC=5.0V, driver enabled, receiver off, REB=VCC, DE = VCC, no load",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Operating supply current (static)",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "µA",
          "min": 700,
          "typ": null,
          "max": 960,
          "conditions": "VCC=5.0V, driver off, receiver enabled, REB=0V, DE = 0V, no load",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Operating supply current (shutdown)",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "µA",
          "min": 2.9,
          "typ": null,
          "max": 5,
          "conditions": "VCC=5.0V, driver off, receiver off, REB=VCC, DE = 0V, DI=open, no load",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Operating supply current (shutdown)",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "µA",
          "min": 1.6,
          "typ": null,
          "max": 3,
          "conditions": "VCC=3.3V, driver off, receiver off, REB=VCC, DE = 0V, DI=open, no load",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Driver rise/fall time",
          "symbol": "tr, tf",
          "kind": "timing",
          "unit": "ns",
          "min": 1,
          "typ": 3,
          "max": 6,
          "conditions": "VCC=3.3 V/5.0 V, RL = 54 Ohm, CL = 50 pF (Fig 8-3)",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Driver propagation delay",
          "symbol": "tPHL,tPLH",
          "kind": "timing",
          "unit": "ns",
          "min": 3,
          "typ": 10,
          "max": 20,
          "conditions": "VCC=3.3 V/5.0 V, RL = 54 Ohm, CL = 50 pF (Fig 8-3)",
          "source_page": 8,
          "source": "datasheet"
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        {
          "name": "Driver pulse width distortion",
          "symbol": "tSK(P)",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": null,
          "max": 3.5,
          "conditions": "|tPHL – tPLH|, VCC=3.3 V/5.0 V",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Driver disable time",
          "symbol": "tPHZ,tPLZ",
          "kind": "timing",
          "unit": "ns",
          "min": 15,
          "typ": null,
          "max": 25,
          "conditions": "VCC=3.3 V/5.0 V (Fig 8-4, 8-5)",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Driver enable time (RE = 0 V)",
          "symbol": "tPZH,tPZL",
          "kind": "timing",
          "unit": "ns",
          "min": 20,
          "typ": null,
          "max": 50,
          "conditions": "RE = 0 V, VCC=3.3 V/5.0 V (Fig 8-4, 8-5)",
          "source_page": 8,
          "source": "datasheet"
        },
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          "name": "Driver enable time (RE = VCC)",
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          "kind": "timing",
          "unit": "µs",
          "min": 2.5,
          "typ": null,
          "max": 10,
          "conditions": "RE = VCC, VCC=3.3 V/5.0 V (Fig 8-4, 8-5)",
          "source_page": 8,
          "source": "datasheet"
        },
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          "name": "Receiver rise/fall time",
          "symbol": "tr, tf",
          "kind": "timing",
          "unit": "ns",
          "min": 3.8,
          "typ": null,
          "max": 10,
          "conditions": "VCC=3.3 V/5.0 V, CL = 15 pF (Fig 8-6)",
          "source_page": 8,
          "source": "datasheet"
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          "name": "Receiver propagation delay",
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          "min": 23,
          "typ": null,
          "max": 110,
          "conditions": "VCC=3.3 V/5.0 V, CL = 15 pF (Fig 8-6)",
          "source_page": 8,
          "source": "datasheet"
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          "name": "Receiver pulse width distortion",
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