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Ray Set visibility: public 3dbfae4 3d ago
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{
  "schema_version": 1,
  "type": "component",
  "slug": "adm1490ebrmz",
  "title": "ADM1490EBRMZ",
  "brief": "Analog Devices 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",
    "communication interface chip-uart-485-232",
    "adm1490ebrmz",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "ADM1490EBRMZ",
    "manufacturer": "Analog Devices",
    "package": "MSOP-8",
    "pin_count": 8,
    "category": "Communication Interface Chip/UART/485/232",
    "subcategory": "RS-485/RS-422 ICs",
    "datasheet": "https://www.analog.com/media/en/technical-documentation/data-sheets/ADM1490E_1491E.pdf",
    "parts": {
      "symbol": "adm1490ebrmz.kicad_sym",
      "footprint": "adm1490ebrmz.kicad_mod",
      "model_3d": "adm1490ebrmz-hero.glb",
      "model_3d_plain": "adm1490ebrmz-etched.glb",
      "model_3d_step": "adm1490ebrmz-etched.step",
      "model_3d_step_plain": "adm1490ebrmz.step",
      "lbr": "adm1490ebrmz.lbr"
    },
    "distributor_links": {
      "lcsc": "C657956",
      "digikey": "ADM1490EBRMZ-ND",
      "mouser": "584-ADM1490EBRMZ"
    },
    "distributor_check": {
      "checked_at": "2026-10-28T15:50:19Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "ADM1490EBRMZ-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "584-ADM1490EBRMZ",
        "status": "found"
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    },
    "pins": [
      {
        "number": "1",
        "name": "VCC",
        "type": "power_in",
        "description": "Power supply input, specified at 5 V ± 5% per Table 5."
      },
      {
        "number": "2",
        "name": "RO",
        "type": "output",
        "description": "Receiver output."
      },
      {
        "number": "3",
        "name": "DI",
        "type": "input",
        "description": "When the driver is enabled, a logic low on DI forces A low and B high, and a logic high forces A high and B low."
      },
      {
        "number": "4",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the device."
      },
      {
        "number": "5",
        "name": "Y",
        "type": "output",
        "description": "Noninverting driver output Y."
      },
      {
        "number": "6",
        "name": "Z",
        "type": "output",
        "description": "Inverting driver output Z."
      },
      {
        "number": "7",
        "name": "B",
        "type": "input",
        "description": "Inverting receiver input B, with the RS-485 bus common-mode range of −7 V to +12 V stated in the specifications."
      },
      {
        "number": "8",
        "name": "A",
        "type": "input",
        "description": "Noninverting receiver input A, with the RS-485 bus common-mode range of −7 V to +12 V stated in the specifications."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The ADM1490E has no RE or DE pins on its 8-lead MSOP; the device is fixed as receiver-enabled and dr"
        ],
        "pages_sent": 16,
        "cost_usd": 0.0167,
        "at": "2026-10-28T15:49:45"
      },
      "datasheet": {
        "url": "https://www.analog.com/media/en/technical-documentation/data-sheets/ADM1490E_1491E.pdf",
        "pages": 16,
        "sha256": "74a5d8439f987121",
        "source_tier": "mfr"
      },
      "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"
    },
    "models_3d": [
      {
        "file": "adm1490ebrmz.step",
        "role": "plain",
        "up": "Z",
        "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": "2026-10-28",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "adm1490ebrmz-etched.step",
        "role": "eda",
        "up": "Z",
        "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": "68d937bdef5255f7dafb8f90558bfcd2c0095e83e9a0e1424dcfd6eb9c84e5ec",
        "checked": "2026-10-28",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Analog Devices",
      "Package": "MSOP-8",
      "Category": "Communication Interface Chip/UART/485/232",
      "Pins": "8"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "74a5d8439f987121d9a35ac32a2f080de75f29070e40b665bed8b7178894a37a",
      "rows": [
        {
          "name": "Supply current, outputs enabled",
          "symbol": "ICC1",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 1.2,
          "max": 2,
          "conditions": "Outputs unloaded, digital inputs = VCC or GND",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Supply current, outputs disabled",
          "symbol": "ICC2",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 0.8,
          "max": 1.5,
          "conditions": "Outputs unloaded, digital inputs = VCC or GND",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Differential output voltage, loaded (RS-422)",
          "symbol": "|VOD2|",
          "kind": "electrical",
          "unit": "V",
          "min": 2,
          "typ": null,
          "max": 5,
          "conditions": "RL = 100 Ω (RS-422), see Figure 21",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Differential output voltage, loaded (RS-485)",
          "symbol": "|VOD2|",
          "kind": "electrical",
          "unit": "V",
          "min": 1.5,
          "typ": null,
          "max": 5,
          "conditions": "RL = 54 Ω (RS-485), see Figure 21",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Differential output voltage, bus common-mode range",
          "symbol": "|VOD3|",
          "kind": "electrical",
          "unit": "V",
          "min": 1.5,
          "typ": null,
          "max": 5,
          "conditions": "−7 V ≤ VTEST ≤ +12 V, see Figure 22",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Change in |VOD| for complementary output states",
          "symbol": "∆|VOD2|",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.2,
          "conditions": "RL = 54 Ω or 100 Ω, see Figure 21",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Common-mode output voltage",
          "symbol": "VOC",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 3,
          "conditions": "RL = 54 Ω or 100 Ω, see Figure 21",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Change in common-mode output voltage for complementary output states",
          "symbol": "∆|VOC|",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.2,
          "conditions": "RL = 54 Ω or 100 Ω, see Figure 21",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output leakage current (Y, Z), VIN = 12 V",
          "symbol": "IO",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 100,
          "conditions": "DE = 0 V, VDD = 0 V or 5 V, VIN = 12 V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output leakage current (Y, Z), VIN = −7 V",
          "symbol": "IO",
          "kind": "electrical",
          "unit": "µA",
          "min": -100,
          "typ": null,
          "max": null,
          "conditions": "DE = 0 V, VDD = 0 V or 5 V, VIN = −7 V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output short-circuit current",
          "symbol": "IOS",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 250,
          "conditions": "−7 V < VOUT < +12 V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input low voltage (DE, RE, DI)",
          "symbol": "VIL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.8,
          "conditions": "DE, RE, DI",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input high voltage (DE, RE, DI)",
          "symbol": "VIH",
          "kind": "electrical",
          "unit": "V",
          "min": 2,
          "typ": null,
          "max": null,
          "conditions": "DE, RE, DI",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input current (DE, RE, DI)",
          "symbol": "II",
          "kind": "electrical",
          "unit": "µA",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "DE, RE, DI",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Differential input threshold voltage",
          "symbol": "VTH",
          "kind": "electrical",
          "unit": "V",
          "min": -0.2,
          "typ": null,
          "max": 0.2,
          "conditions": "−7 V < VCM < +12 V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input voltage hysteresis",
          "symbol": "VHYS",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 30,
          "max": null,
          "conditions": "VCM = 0 V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input current (A, B), VCM = 12 V",
          "symbol": "II",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "VCM = 12 V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input current (A, B), VCM = −7 V",
          "symbol": "II",
          "kind": "electrical",
          "unit": "mA",
          "min": -0.8,
          "typ": null,
          "max": null,
          "conditions": "VCM = −7 V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Line input resistance",
          "symbol": "RIN",
          "kind": "electrical",
          "unit": "kΩ",
          "min": 12,
          "typ": null,
          "max": 30,
          "conditions": "−7 V ≤ VCM ≤ +12 V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output voltage low",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.4,
          "conditions": "IOUT = +4.0 mA, VA − VB = −0.2 V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output voltage high",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 4,
          "typ": null,
          "max": null,
          "conditions": "IOUT = −4.0 mA, VA − VB = +0.2 V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Short-circuit current (receiver output)",
          "symbol": "",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 85,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Three-state output leakage current",
          "symbol": "IOZR",
          "kind": "electrical",
          "unit": "µA",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "VCC = 5.25 V, 0.4 V < VOUT < 2.4 V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Maximum data rate",
          "symbol": "",
          "kind": "timing",
          "unit": "Mbps",
          "min": null,
          "typ": null,
          "max": 16,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Driver propagation delay",
          "symbol": "tDPLH, tDPHL",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 11,
          "max": 17,
          "conditions": "RL = 54 Ω, CL = 100 pF, see Figure 23 and Figure 3",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Driver output skew",
          "symbol": "tSKEW",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 0.5,
          "max": 2,
          "conditions": "RL = 54 Ω, CL = 100 pF, see Figure 23 and Figure 3, tSKEW = |tDPLH − tDPHL|",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Driver rise time/fall time",
          "symbol": "tDR, tDF",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 8,
          "max": 15,
          "conditions": "RL = 54 Ω, CL = 100 pF, see Figure 23 and Figure 3",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Driver enable time",
          "symbol": "tZH, tZL",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": null,
          "max": 20,
          "conditions": "RL = 110 Ω, CL = 50 pF, see Figure 24 and Figure 5",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Driver disable time",
          "symbol": "tHZ, tLZ",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": null,
          "max": 20,
          "conditions": "RL = 110 Ω, CL = 50 pF, see Figure 24 and Figure 5",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Receiver propagation delay",
          "symbol": "tPLH, tPHL",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 12,
          "max": 20,
          "conditions": "CL = 15 pF, see Figure 25 and Figure 4",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Receiver skew",
          "symbol": "tSKEW",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 0.4,
          "max": 2,
          "conditions": "CL = 15 pF, see Figure 25 and Figure 4",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Receiver enable time",
          "symbol": "tZH, tZL",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": null,
          "max": 13,
          "conditions": "RL = 1 kΩ, CL = 15 pF, see Figure 26 and Figure 6",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Receiver disable time",
          "symbol": "tHZ, tLZ",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": null,
          "max": 13,
          "conditions": "RL = 1 kΩ, CL = 15 pF, see Figure 26 and Figure 6",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Supply voltage VCC (recommended operation)",
          "symbol": "VCC",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 4.75,
          "typ": null,
          "max": 5.25,
          "conditions": "Entire recommended operation range",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Operating temperature range",
          "symbol": "TA",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "VCC to GND",
          "symbol": "VCC",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 7,
          "conditions": "Referenced to GND",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Digital I/O voltage (DE, RE)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "Maximum is VCC + 0.3 V as printed",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Driver input voltage (DI)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "Maximum is VCC + 0.3 V as printed",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Receiver output voltage (RO)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "Maximum is VCC + 0.3 V as printed",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Driver output/receiver input voltage (A, B, Y, Z)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -9,
          "typ": null,
          "max": 14,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Operating temperature range (absolute maximum)",
          "symbol": "TA",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature range",
          "symbol": "TSTG",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "ESD (HBM) on A, B, Y, and Z",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "kV",
          "min": -8,
          "typ": null,
          "max": 8,
          "conditions": "Human body model",
          "source_page": 5,
          "source": "datasheet"
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