TRF7961RHBR

{
  "schema_version": 1,
  "type": "component",
  "slug": "trf7961rhbr",
  "title": "TRF7961RHBR",
  "brief": "Texas Instruments RF Chips, VQFN-32-EP(5x5). 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",
    "radio frequency chip-antenna",
    "trf7961rhbr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "TRF7961RHBR",
    "manufacturer": "Texas Instruments",
    "package": "VQFN-32-EP(5x5)",
    "pin_count": 33,
    "category": "Radio Frequency Chip/Antenna",
    "subcategory": "RF Chips",
    "datasheet": "https://www.ti.com/cn/lit/gpn/trf7961",
    "parts": {
      "symbol": "trf7961rhbr.kicad_sym",
      "footprint": "trf7961rhbr.kicad_mod",
      "model_3d": "trf7961rhbr-hero.glb",
      "model_3d_plain": "trf7961rhbr.glb",
      "model_3d_step": "trf7961rhbr-etched.step",
      "model_3d_step_plain": "trf7961rhbr.step",
      "lbr": "trf7961rhbr.lbr"
    },
    "distributor_links": {
      "lcsc": "C2654834",
      "digikey": "481-1112-2-ND",
      "mouser": "595-TRF7961RHBR"
    },
    "distributor_check": {
      "checked_at": "2026-10-07T23:52:49Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "481-1112-2-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-TRF7961RHBR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VDD_A",
        "type": "power_out",
        "description": "Internal regulated supply, 2.7 V to 3.4 V, for analog circuitry."
      },
      {
        "number": "2",
        "name": "VIN",
        "type": "power_in",
        "description": "External supply input to the chip, 2.7 V to 5.5 V."
      },
      {
        "number": "3",
        "name": "VDD_RF",
        "type": "power_out",
        "description": "Internal regulated supply, 2.7 V to 5 V, normally connected to VDD_PA (pin 4)."
      },
      {
        "number": "4",
        "name": "VDD_PA",
        "type": "power_in",
        "description": "Supply for the PA; normally connected externally to VDD_RF (pin 3)."
      },
      {
        "number": "5",
        "name": "TX_OUT",
        "type": "output",
        "description": "RF output with selectable output power of 100 mW at 8 Ω or 200 mW at 4 Ω with VDD = 5 V."
      },
      {
        "number": "6",
        "name": "VSS_RF",
        "type": "power_in",
        "description": "Negative supply for the PA; normally connected to circuit ground."
      },
      {
        "number": "7",
        "name": "VSS_RX",
        "type": "power_in",
        "description": "Negative supply for the RX inputs; normally connected to circuit ground."
      },
      {
        "number": "8",
        "name": "RX_IN1",
        "type": "input",
        "description": "RX input used for AM reception."
      },
      {
        "number": "9",
        "name": "RX_IN2",
        "type": "input",
        "description": "RX input used for PM reception."
      },
      {
        "number": "10",
        "name": "VSS",
        "type": "power_in",
        "description": "Chip substrate ground."
      },
      {
        "number": "11",
        "name": "BAND_GAP",
        "type": "output",
        "description": "Band-gap voltage of 1.6 V, an internal analog voltage reference that must be AC-bypassed to ground."
      },
      {
        "number": "12",
        "name": "ASK/OOK",
        "type": "bidirectional",
        "description": "In direct mode selects ASK or OOK modulation (0 = ASK, 1 = OOK); can also be configured to provide the received analog signal output (ANA_OUT)."
      },
      {
        "number": "13",
        "name": "IRQ",
        "type": "output",
        "description": "Interrupt request output to prompt the MCU for attention when a PICC or VICC response is detected."
      },
      {
        "number": "14",
        "name": "MOD",
        "type": "input",
        "description": "External modulation input used in direct mode."
      },
      {
        "number": "15",
        "name": "VSS_A",
        "type": "power_in",
        "description": "Negative supply for internal analog circuits; normally connected to circuit ground."
      },
      {
        "number": "16",
        "name": "VDD_I/O",
        "type": "power_in",
        "description": "Supply for I/O communications, 1.8 V to 5.5 V; connect to VIN for 5-V communication, VDD_X for 3.3-V communication, or any voltage from 1.8 V to 5.5 V."
      },
      {
        "number": "17",
        "name": "I/O_0",
        "type": "bidirectional",
        "description": "I/O pin for parallel communication; unused in SPI modes where it is hardwired to VSS or VDD per the interface table."
      },
      {
        "number": "18",
        "name": "I/O_1",
        "type": "bidirectional",
        "description": "I/O pin for parallel communication; hardwired to VDD or VSS when SPI is used."
      },
      {
        "number": "19",
        "name": "I/O_2",
        "type": "bidirectional",
        "description": "I/O pin for parallel communication; hardwired to VDD when SPI is used."
      },
      {
        "number": "20",
        "name": "I/O_3",
        "type": "bidirectional",
        "description": "I/O pin for parallel communication."
      },
      {
        "number": "21",
        "name": "I/O_4",
        "type": "bidirectional",
        "description": "I/O pin for parallel communication; serves as slave select (SS) in SPI with SS."
      },
      {
        "number": "22",
        "name": "I/O_5",
        "type": "bidirectional",
        "description": "I/O pin for parallel communication; provides the strobe output clock for serial communication and the data clock output in direct mode."
      },
      {
        "number": "23",
        "name": "I/O_6",
        "type": "bidirectional",
        "description": "I/O pin for parallel communication; MISO for SPI, and serial bit data output in direct mode 1 or subcarrier signal in direct mode 0."
      },
      {
        "number": "24",
        "name": "I/O_7",
        "type": "bidirectional",
        "description": "I/O pin for parallel communication; MOSI for SPI."
      },
      {
        "number": "25",
        "name": "EN2",
        "type": "input",
        "description": "Pulse enable and selection of power-down mode; if connected to VIN, VDD_X stays active during power down to support the MCU, and it can also be used for pulse wake-up from power-down."
      },
      {
        "number": "26",
        "name": "DATA_CLK",
        "type": "input",
        "description": "Clock input for MCU communication in both parallel and serial modes."
      },
      {
        "number": "27",
        "name": "SYS_CLK",
        "type": "output",
        "description": "Clock for the MCU at 3.39, 6.78, or 13.56 MHz when EN = 1; if EN = 0 and EN2 = 1, the system clock is set to 60 kHz."
      },
      {
        "number": "28",
        "name": "EN",
        "type": "input",
        "description": "Chip enable input; when EN = 0 the chip is in power-down mode."
      },
      {
        "number": "29",
        "name": "VSS_D",
        "type": "power_in",
        "description": "Negative supply for internal digital circuits; normally connected to circuit ground."
      },
      {
        "number": "30",
        "name": "OSC_OUT",
        "type": "output",
        "description": "Crystal oscillator output for the single external 13.56 MHz crystal."
      },
      {
        "number": "31",
        "name": "OSC_IN",
        "type": "input",
        "description": "Crystal oscillator input for the single external 13.56 MHz crystal."
      },
      {
        "number": "32",
        "name": "VDD_X",
        "type": "power_out",
        "description": "Internally regulated supply, 2.7 V to 3.4 V, for external circuitry (MCU)."
      },
      {
        "number": "33",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "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 datasheet lists the exposed thermal pad only as 'Thermal Pad Connected to circuit ground' with n; Datasheet type for VDD_PA is INP (input). Mapped to power_in because it is a PA supply pin that is n; Datasheet type for ASK/OOK is BID, but the description states it is a direct-mode selection input (0",
          "exposed pad 33 added from the footprint"
        ],
        "pages_sent": 13,
        "cost_usd": 0.0906,
        "at": "2026-10-07T23:52:32"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/trf7961",
        "pages": 55,
        "sha256": "34e4b915ecd05efb",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 33,
        "described": 33,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "trf7961rhbr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          5,
          5,
          0.875
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "5fa713ea46b36980895812ed853577889b7cb06d275041a39b99bc0be305dc79",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "trf7961rhbr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          5,
          5,
          0.875
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "3c065acdfed70d5d98dd1a97d40bfb98172e0cdf1b9c42b362a0a6a994308cb8",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "VQFN-32-EP(5x5)",
      "Category": "Radio Frequency Chip/Antenna",
      "Pins": "33"
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "trf7961rhbr"
  ],
  "discovery_pitch": "TRF7961RHBR (Texas Instruments) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
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    "README.md",
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    "trf7961rhbr.step",
    "trf7961rhbr.lbr",
    "docs/hero.png",
    "docs/trf7961rhbr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
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    "trf7961rhbr-hero.overlay.json"
  ],
  "visibility": {
    "public": true
  }
}