ADS7842EB

{
  "slug": "ads7842eb",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Analog To Digital Converters (ADC), SSOP-28-208mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
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    "data acquisition",
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  "component": {
    "mpn": "ADS7842EB",
    "manufacturer": "Texas Instruments",
    "package": "SSOP-28-208mil",
    "pin_count": 28,
    "category": "Data Acquisition",
    "subcategory": "Analog To Digital Converters (ADC)",
    "datasheet": "https://www.ti.com/cn/lit/gpn/ads7842",
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    "distributor_links": {
      "lcsc": "C2670465",
      "digikey": "296-44998-5-ND",
      "mouser": "595-ADS7842EB"
    },
    "distributor_check": {
      "checked_at": "2026-10-12T04:29:47Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-44998-5-ND",
        "status": "found",
        "lifecycle": "Last Time Buy"
      },
      "mouser": {
        "pn": "595-ADS7842EB",
        "status": "found",
        "lifecycle": "End of Life"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "AIN0",
        "type": "input",
        "description": "Single-ended analog input channel 0 of the 4-channel multiplexer, with a full-scale input span of 0 to VREF."
      },
      {
        "number": "2",
        "name": "AIN1",
        "type": "input",
        "description": "Single-ended analog input channel 1 of the 4-channel multiplexer, with a full-scale input span of 0 to VREF."
      },
      {
        "number": "3",
        "name": "AIN2",
        "type": "input",
        "description": "Single-ended analog input channel 2 of the 4-channel multiplexer, with a full-scale input span of 0 to VREF."
      },
      {
        "number": "4",
        "name": "AIN3",
        "type": "input",
        "description": "Single-ended analog input channel 3 of the 4-channel multiplexer, with a full-scale input span of 0 to VREF."
      },
      {
        "number": "5",
        "name": "VREF",
        "type": "power_in",
        "description": "Voltage reference input that sets the analog input range; the Electrical Characteristics specify the reference range as 0.1 V to +VCC."
      },
      {
        "number": "6",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground; the datasheet recommends connecting it to a clean ground point, separate from microcontroller or DSP grounds."
      },
      {
        "number": "7",
        "name": "DB11",
        "type": "tri_state",
        "description": "Parallel 3-state data output bit 11, the MSB, valid after the rising edge of BUSY."
      },
      {
        "number": "8",
        "name": "DB10",
        "type": "tri_state",
        "description": "Parallel 3-state data output bit 10, valid after the rising edge of BUSY."
      },
      {
        "number": "9",
        "name": "DB9",
        "type": "tri_state",
        "description": "Parallel 3-state data output bit 9, valid after the rising edge of BUSY."
      },
      {
        "number": "10",
        "name": "DB8",
        "type": "tri_state",
        "description": "Parallel 3-state data output bit 8, valid after the rising edge of BUSY."
      },
      {
        "number": "11",
        "name": "DB7",
        "type": "tri_state",
        "description": "Parallel 3-state data output bit 7, valid after the rising edge of BUSY."
      },
      {
        "number": "12",
        "name": "DB6",
        "type": "tri_state",
        "description": "Parallel 3-state data output bit 6, valid after the rising edge of BUSY."
      },
      {
        "number": "13",
        "name": "DB5",
        "type": "tri_state",
        "description": "Parallel 3-state data output bit 5, valid after the rising edge of BUSY."
      },
      {
        "number": "14",
        "name": "DGND",
        "type": "power_in",
        "description": "Digital ground for the parallel interface and digital circuitry."
      },
      {
        "number": "15",
        "name": "DB4",
        "type": "tri_state",
        "description": "Parallel 3-state data output bit 4, valid after the rising edge of BUSY."
      },
      {
        "number": "16",
        "name": "DB3",
        "type": "tri_state",
        "description": "Parallel 3-state data output bit 3, valid after the rising edge of BUSY."
      },
      {
        "number": "17",
        "name": "DB2",
        "type": "tri_state",
        "description": "Parallel 3-state data output bit 2, valid after the rising edge of BUSY."
      },
      {
        "number": "18",
        "name": "DB1",
        "type": "tri_state",
        "description": "Parallel 3-state data output bit 1, valid after the rising edge of BUSY."
      },
      {
        "number": "19",
        "name": "DB0",
        "type": "tri_state",
        "description": "Parallel 3-state data output bit 0, the LSB, valid after the rising edge of BUSY."
      },
      {
        "number": "20",
        "name": "RD",
        "type": "input",
        "description": "Active-LOW read input that reads the data outputs in combination with CS; with A0 it also controls power-down and wake-up."
      },
      {
        "number": "21",
        "name": "CS",
        "type": "input",
        "description": "Active-LOW chip select; CS and WR both LOW initiate a new conversion and place the outputs in tri-state mode."
      },
      {
        "number": "22",
        "name": "WR",
        "type": "input",
        "description": "Active-LOW write input that starts a new conversion on its falling edge and selects the analog channel via A0 and A1 in combination with CS."
      },
      {
        "number": "23",
        "name": "BUSY",
        "type": "output",
        "description": "Goes LOW during a conversion and rises when the conversion completes, which also enables the parallel outputs."
      },
      {
        "number": "24",
        "name": "CLK",
        "type": "input",
        "description": "External clock input whose frequency sets the conversion rate through fCLK = 16 × fSAMPLE."
      },
      {
        "number": "25",
        "name": "A0",
        "type": "input",
        "description": "Address input that selects one of four analog channels with A1 and CS/WR, latched on the rising edge of RD or WR; with RD it controls power-down and wake-up."
      },
      {
        "number": "26",
        "name": "A1",
        "type": "input",
        "description": "Address input that selects one of four analog channels with A0 (00 = AIN0 to 11 = AIN3), latched on the rising edge of RD or WR."
      },
      {
        "number": "27",
        "name": "VDIG",
        "type": "power_in",
        "description": "Digital supply input, nominally +5 V."
      },
      {
        "number": "28",
        "name": "VANA",
        "type": "power_in",
        "description": "Analog supply input, nominally +5 V."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
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        "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 top-view pin diagram in the extracted text is scrambled (pin numbers and names are out of order,; The 208-mil width in the package hint is not stated anywhere in the supplied text. The datasheet onl; Pin types for the analog inputs and VREF are set to KiCad 'input' because the datasheet does not cla"
        ],
        "pages_sent": 23,
        "cost_usd": 0.1098,
        "at": "2026-10-12T04:29:28"
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      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/ads7842",
        "pages": 23,
        "sha256": "0e62346502c30b79",
        "source_tier": "lcsc"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 28,
        "described": 28,
        "cites_pages": true,
        "refuses_to_fabricate": true
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}