CH440R

{
  "schema_version": 1,
  "type": "component",
  "slug": "ch440r",
  "title": "CH440R",
  "brief": "WCH Jiangsu Qin Heng Analog Switches, Multiplexers, TSSOP-16. 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",
    "ch440r",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "CH440R",
    "manufacturer": "WCH Jiangsu Qin Heng",
    "package": "TSSOP-16",
    "pin_count": 16,
    "category": "Interface",
    "subcategory": "Analog Switches, Multiplexers",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588883744568037376",
    "parts": {
      "symbol": "ch440r.kicad_sym",
      "footprint": "ch440r.kicad_mod",
      "model_3d": "ch440r-hero.glb",
      "model_3d_plain": "ch440r-etched.glb",
      "model_3d_step": "ch440r-etched.step",
      "model_3d_step_plain": "ch440r.step",
      "lbr": "ch440r.lbr"
    },
    "distributor_links": {
      "lcsc": "C282323"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T06:56:57Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "IN",
        "type": "input",
        "description": "Two-to-one analog switch select input: high selects the 2# side (S2x) and low selects the 1# side (S1x)."
      },
      {
        "number": "2",
        "name": "S1A",
        "type": "passive",
        "description": "Analog switch 1# terminal for channel A, selected when IN is low; analog range is 0 to 2.8 V recommended and -0.3 V to VCC+0.3 V absolute."
      },
      {
        "number": "3",
        "name": "S2A",
        "type": "passive",
        "description": "Analog switch 2# terminal for channel A, selected when IN is high; analog range is 0 to 2.8 V recommended and -0.3 V to VCC+0.3 V absolute."
      },
      {
        "number": "4",
        "name": "DA",
        "type": "passive",
        "description": "Common terminal of the channel A 2:1 analog switch, connected to S1A or S2A depending on IN while EN# is low."
      },
      {
        "number": "5",
        "name": "S1B",
        "type": "passive",
        "description": "Analog switch 1# terminal for channel B, selected when IN is low; analog range is 0 to 2.8 V recommended and -0.3 V to VCC+0.3 V absolute."
      },
      {
        "number": "6",
        "name": "S2B",
        "type": "passive",
        "description": "Analog switch 2# terminal for channel B, selected when IN is high; analog range is 0 to 2.8 V recommended and -0.3 V to VCC+0.3 V absolute."
      },
      {
        "number": "7",
        "name": "DB",
        "type": "passive",
        "description": "Common terminal of the channel B 2:1 analog switch, connected to S1B or S2B depending on IN while EN# is low."
      },
      {
        "number": "8",
        "name": "GND",
        "type": "power_in",
        "description": "Common ground and reference for digital signals; the datasheet requires a good ground connection to limit interference."
      },
      {
        "number": "9",
        "name": "DC",
        "type": "passive",
        "description": "Common terminal of the channel C 2:1 analog switch, connected to S1C or S2C depending on IN while EN# is low."
      },
      {
        "number": "10",
        "name": "S2C",
        "type": "passive",
        "description": "Analog switch 2# terminal for channel C, selected when IN is high; analog range is 0 to 2.8 V recommended and -0.3 V to VCC+0.3 V absolute."
      },
      {
        "number": "11",
        "name": "S1C",
        "type": "passive",
        "description": "Analog switch 1# terminal for channel C, selected when IN is low; analog range is 0 to 2.8 V recommended and -0.3 V to VCC+0.3 V absolute."
      },
      {
        "number": "12",
        "name": "DD",
        "type": "passive",
        "description": "Common terminal of the channel D 2:1 analog switch, connected to S1D or S2D depending on IN while EN# is low."
      },
      {
        "number": "13",
        "name": "S2D",
        "type": "passive",
        "description": "Analog switch 2# terminal for channel D, selected when IN is high; analog range is 0 to 2.8 V recommended and -0.3 V to VCC+0.3 V absolute."
      },
      {
        "number": "14",
        "name": "S1D",
        "type": "passive",
        "description": "Analog switch 1# terminal for channel D, selected when IN is low; analog range is 0 to 2.8 V recommended and -0.3 V to VCC+0.3 V absolute."
      },
      {
        "number": "15",
        "name": "EN#",
        "type": "input",
        "description": "Active-low global enable; when high, all four channels are disconnected regardless of IN."
      },
      {
        "number": "16",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply; the 5V-rated part operates at 4.0 to 5.5 V (absolute maximum -0.5 to 6.5 V) and must be decoupled per the datasheet."
      }
    ],
    "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 combined pin table for CH440G/P/R and CH445P (page 3) lists four part columns (CH440G, CH440R, C; Analog switch pins are typed as passive, which is my choice of KiCad class; the datasheet does not a"
        ],
        "pages_sent": 16,
        "cost_usd": 0.0821,
        "at": "2026-10-18T06:54:59"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588883744568037376",
        "pages": 16,
        "sha256": "6abffb8c7ff17e50",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 16,
        "described": 16,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "ch440r.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          5,
          1.1
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "6ad5e98224d02a427d9a6b929a28dbc158b9925fba5adec12db05079f1016948",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ch440r-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          5,
          1.1
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "f2b67c953425811a68d64d7768f3a424740bd07111f1f63f71a68b4fa7a3fcdf",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "WCH Jiangsu Qin Heng",
      "Package": "TSSOP-16",
      "Category": "Interface",
      "Pins": "16"
    },
    "characteristics": {
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      "rows": [
        {
          "name": "模拟开关工作环境温度 TA",
          "symbol": "TA",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "存储环境温度 TS",
          "symbol": "TS",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -55,
          "typ": null,
          "max": 125,
          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "5V 芯片电源电压 VCC/VDD",
          "symbol": "VCC",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": 6.5,
          "conditions": "5V 芯片，VCC/VDD 接电源，GND 接地",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "数字或模拟输入/输出引脚电压 VIO",
          "symbol": "VIO",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": null,
          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "模拟开关连续通过电流 Isw",
          "symbol": "Isw",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": 0,
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        {
          "name": "所有模拟开关连续通过电流总和 Iall",
          "symbol": "Iall",
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          "unit": "mA",
          "min": 0,
          "typ": null,
          "max": 120,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "VCC/VDD 电源电压 (5V 额定)",
          "symbol": "VCC",
          "kind": "electrical",
          "unit": "V",
          "min": 4,
          "typ": 5,
          "max": 5.5,
          "conditions": "TA=25℃, VCC=VDD=5V",
          "source_page": 8,
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        },
        {
          "name": "静态电源电流 ICC",
          "symbol": "ICC",
          "kind": "electrical",
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          "typ": null,
          "max": 10,
          "conditions": "TA=25℃, VCC=VDD=5V, 所有数字引脚接 VCC 或 GND",
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          "source": "datasheet"
        },
        {
          "name": "静态电源电流 ICCX",
          "symbol": "ICCX",
          "kind": "electrical",
          "unit": "mA",
          "min": 0.5,
          "typ": null,
          "max": 2,
          "conditions": "TA=25℃, VCC=VDD=5V, 所有数字引脚 3.4V",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "数字引脚低电平输入电压 VIL",
          "symbol": "VIL",
          "kind": "electrical",
          "unit": "V",
          "min": 0,
          "typ": null,
          "max": 1,
          "conditions": "TA=25℃, VCC=VDD=5V",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "数字引脚高电平输入电压 VIH",
          "symbol": "VIH",
          "kind": "electrical",
          "unit": "V",
          "min": 2,
          "typ": null,
          "max": null,
          "conditions": "TA=25℃, VCC=VDD=5V",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "数字引脚输入泄漏电流 ILEAK",
          "symbol": "ILEAK",
          "kind": "electrical",
          "unit": "uA",
          "min": 0.1,
          "typ": null,
          "max": 10,
          "conditions": "TA=25℃, VCC=VDD=5V",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "模拟开关关闭状态泄漏电流 IOFF",
          "symbol": "IOFF",
          "kind": "electrical",
          "unit": "uA",
          "min": -1,
          "typ": 0.01,
          "max": 1,
          "conditions": "TA=25℃, VCC=VDD=5V",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "推荐的模拟信号电压范围 VANA",
          "symbol": "VANA",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 0,
          "typ": null,
          "max": 2.8,
          "conditions": "TA=25℃, VCC=VDD=5V",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "允许的模拟信号电压范围 VANAX",
          "symbol": "VANAX",
          "kind": "electrical",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "TA=25℃, VCC=VDD=5V",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "模拟开关导通电阻 RON1",
          "symbol": "RON1",
          "kind": "electrical",
          "unit": "Ω",
          "min": 4,
          "typ": null,
          "max": 6,
          "conditions": "TA=25℃, VCC=VDD=5V, 模拟信号电压为 0V",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "模拟开关导通电阻 RON2",
          "symbol": "RON2",
          "kind": "electrical",
          "unit": "Ω",
          "min": 5,
          "typ": null,
          "max": 8,
          "conditions": "TA=25℃, VCC=VDD=5V, 模拟信号电压为 2V",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "模拟开关导通电阻 RON3",
          "symbol": "RON3",
          "kind": "electrical",
          "unit": "Ω",
          "min": 11,
          "typ": null,
          "max": 16,
          "conditions": "TA=25℃, VCC=VDD=5V, 模拟信号电压为 3.4V",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "模拟开关导通电阻 RON4",
          "symbol": "RON4",
          "kind": "electrical",
          "unit": "Ω",
          "min": 8,
          "typ": null,
          "max": 12,
          "conditions": "TA=25℃, VCC=VDD=5V, 模拟信号电压为 5V",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "VCC/VDD 电源电压 (5V 芯片以 3.3V 工作)",
          "symbol": "VCC3",
          "kind": "electrical",
          "unit": "V",
          "min": 2.1,
          "typ": 3.3,
          "max": 3.9,
          "conditions": "TA=25℃, VCC=VDD=3.3V",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "静态电源电流 ICC3",
          "symbol": "ICC3",
          "kind": "electrical",
          "unit": "uA",
          "min": 0.1,
          "typ": null,
          "max": 5,
          "conditions": "TA=25℃, VCC=VDD=3.3V, 所有数字引脚接 VCC 或 GND",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "静态电源电流 ICCX3",
          "symbol": "ICCX3",
          "kind": "electrical",
          "unit": "mA",
          "min": 0.3,
          "typ": null,
          "max": 1,
          "conditions": "TA=25℃, VCC=VDD=3.3V, 所有数字引脚 2.3V",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "数字引脚低电平输入电压 VIL3",
          "symbol": "VIL3",
          "kind": "electrical",
          "unit": "V",
          "min": 0,
          "typ": null,
          "max": 0.7,
          "conditions": "TA=25℃, VCC=VDD=3.3V",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "数字引脚高电平输入电压 VIH3",
          "symbol": "VIH3",
          "kind": "electrical",
          "unit": "V",
          "min": 1.8,
          "typ": null,
          "max": null,
          "conditions": "TA=25℃, VCC=VDD=3.3V",
          "source_page": 9,
          "source": "datasheet"
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        {
          "name": "数字引脚输入泄漏电流 ILEAK3",
          "symbol": "ILEAK3",
          "kind": "electrical",
          "unit": "uA",
          "min": 0.1,
          "typ": null,
          "max": 5,
          "conditions": "TA=25℃, VCC=VDD=3.3V",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "模拟开关关闭状态泄漏电流 IOFF3",
          "symbol": "IOFF3",
          "kind": "electrical",
          "unit": "uA",
          "min": -0.5,
          "typ": 0.005,
          "max": 0.5,
          "conditions": "TA=25℃, VCC=VDD=3.3V",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "推荐的模拟信号电压范围 VANA3",
          "symbol": "VANA3",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 0,
          "typ": null,
          "max": 1.5,
          "conditions": "TA=25℃, VCC=VDD=3.3V",
          "source_page": 9,
          "source": "datasheet"
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        {
          "name": "允许的模拟信号电压范围 VANAX3",
          "symbol": "VANAX3",
          "kind": "electrical",
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          "typ": null,
          "max": null,
          "conditions": "TA=25℃, VCC=VDD=3.3V",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "模拟开关导通电阻 RON1 (3.3V)",
          "symbol": "RON1",
          "kind": "electrical",
          "unit": "Ω",
          "min": 5,
          "typ": null,
          "max": 9,
          "conditions": "TA=25℃, VCC=VDD=3.3V, 模拟信号电压为 0V",
          "source_page": 9,
          "source": "datasheet"
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        {
          "name": "模拟开关导通电阻 RON2 (3.3V)",
          "symbol": "RON2",
          "kind": "electrical",
          "unit": "Ω",
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          "typ": null,
          "max": 14,
          "conditions": "TA=25℃, VCC=VDD=3.3V, 模拟信号电压为 1.2V",
          "source_page": 9,
          "source": "datasheet"
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        {
          "name": "模拟开关导通电阻 RON3 (3.3V)",
          "symbol": "RON3",
          "kind": "electrical",
          "unit": "Ω",
          "min": 23,
          "typ": null,
          "max": 30,
          "conditions": "TA=25℃, VCC=VDD=3.3V, 模拟信号电压为 2.0V",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "模拟开关导通电阻 RON4 (3.3V)",
          "symbol": "RON4",
          "kind": "electrical",
          "unit": "Ω",
          "min": 10,
          "typ": null,
          "max": 15,
          "conditions": "TA=25℃, VCC=VDD=3.3V, 模拟信号电压为 3.3V",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "数字输入引脚电容 CIN",
          "symbol": "CIN",
          "kind": "electrical",
          "unit": "pF",
          "min": 4,
          "typ": null,
          "max": 8,
          "conditions": "TA=25℃, VCC=VDD=5V, F=1MHz",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "开关关闭时模拟信号引脚电容 COFF",
          "symbol": "COFF",
          "kind": "electrical",
          "unit": "pF",
          "min": 6,
          "typ": null,
          "max": 10,
          "conditions": "TA=25℃, VCC=VDD=5V, F=1MHz",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "开关导通时模拟信号引脚电容 CON",
          "symbol": "CON",
          "kind": "electrical",
          "unit": "pF",
          "min": 9,
          "typ": null,
          "max": 14,
          "conditions": "TA=25℃, VCC=VDD=5V, F=1MHz",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "模拟开关-3dB 带宽 BW",
          "symbol": "BW",
          "kind": "electrical",
          "unit": "MHz",
          "min": 400,
          "typ": null,
          "max": 550,
          "conditions": "TA=25℃, VCC=VDD=5V",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "模拟开关开启延时 TON",
          "symbol": "TON",
          "kind": "timing",
          "unit": "nS",
          "min": 3,
          "typ": null,
          "max": 7,
          "conditions": "TA=25℃, VCC=VDD=5V, RL=75Ω, CL=10pF, VANA=0V",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "模拟开关关闭延时 TOFF",
          "symbol": "TOFF",
          "kind": "timing",
          "unit": "nS",
          "min": 2,
          "typ": null,
          "max": 7,
          "conditions": "TA=25℃, VCC=VDD=5V, RL=75Ω, CL=10pF, VANA=0V",
          "source_page": 9,
          "source": "datasheet"
        }
      ]
    }
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  },
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}