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TPS23881RTQR
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Texas Instruments Ethernet Transceivers, QFN-56-EP(8x8). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+94@@ -0,0 +1,94 @@+# TPS23881RTQR++**Texas Instruments** · Ethernet Transceivers · QFN-56-EP(8x8)++TPS23881RTQR from Texas Instruments, in a QFN-56-EP(8x8). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | GAT1 | output | Channel 1 gate drive output to the external N-channel MOSFET; leave floating if unused. |+| 2 | SEN1 | input | Channel 1 current-sense input referenced to KSENSA via the 0.200Ω sense resistor; connect to GND if the channel is unused. |+| 3 | DRAIN1 | input | Channel 1 output voltage monitor and detection sense; may be floated or grounded if unused. |+| 4 | KSENSA | input | Kelvin point connection for SEN1 and SEN2. |+| 5 | DRAIN2 | input | Channel 2 output voltage monitor and detection sense; may be floated or grounded if unused. |+| 6 | SEN2 | input | Channel 2 current-sense input referenced to KSENSA via the 0.200Ω sense resistor; connect to GND if the channel is unused. |+| 7 | GAT2 | output | Channel 2 gate drive output to the external N-channel MOSFET; leave floating if unused. |+| 8 | GAT3 | output | Channel 3 gate drive output to the external N-channel MOSFET; leave floating if unused. |+| 9 | SEN3 | input | Channel 3 current-sense input referenced to KSENSB via the 0.200Ω sense resistor; connect to GND if the channel is unused. |+| 10 | DRAIN3 | input | Channel 3 output voltage monitor and detection sense; may be floated or grounded if unused. |+| 11 | KSENSB | input | Kelvin point connection for SEN3 and SEN4. |+| 12 | DRAIN4 | input | Channel 4 output voltage monitor and detection sense; may be floated or grounded if unused. |+| 13 | SEN4 | input | Channel 4 current-sense input referenced to KSENSB via the 0.200Ω sense resistor; connect to GND if the channel is unused. |+| 14 | GAT4 | output | Channel 4 gate drive output to the external N-channel MOSFET; leave floating if unused. |+| 15 | NC | unconnected | No connect; internally biased at 1/3 or 2/3 of VPWR to grade the VPWR voltage gradient, keep open. |+| 16 | NC | unconnected | No connect; internally biased at 1/3 or 2/3 of VPWR to grade the VPWR voltage gradient, keep open. |+| 17 | VPWR | power_in | Analog 54V positive supply (44V to 57V recommended, 70V absolute max), bypassed with 0.1µF to AGND. |+| 18 | NC | unconnected | No connect; internally biased at 1/3 or 2/3 of VPWR to grade the VPWR voltage gradient, keep open. |+| 19 | NC | unconnected | No connect; internally biased at 1/3 or 2/3 of VPWR to grade the VPWR voltage gradient, keep open. |+| 20 | TEST4 | bidirectional | Internal test pin used for test purposes only; keep open. |+| 21 | AGND | power_in | Analog ground; connect to the GND plane and exposed thermal pad. |+| 22 | NC | unconnected | No connect; keep open. |+| 23 | TEST1 | bidirectional | Internal test pin used for test purposes only (internal 50kΩ typical pull-down); keep open. |+| 24 | TEST2 | bidirectional | Internal test pin used for test purposes only (internal 50kΩ typical pull-down); keep open. |+| 25 | TEST3 | bidirectional | Internal test pin used for test purposes only; keep open. |+| 26 | TEST0 | bidirectional | Internal test pin used for test purposes only (internal 50kΩ typical pull-up); keep open. |+| 27 | NC | unconnected | No connect; keep open. |+| 28 | NC | unconnected | No connect; keep open. |+| 29 | GAT5 | output | Channel 5 gate drive output to the external N-channel MOSFET; leave floating if unused. |+| 30 | SEN5 | input | Channel 5 current-sense input referenced to KSENSC via the 0.200Ω sense resistor; connect to GND if the channel is unused. |+| 31 | DRAIN5 | input | Channel 5 output voltage monitor and detection sense; may be floated or grounded if unused. |+| 32 | KSENSC | input | Kelvin point connection for SEN5 and SEN6. |+| 33 | DRAIN6 | input | Channel 6 output voltage monitor and detection sense; may be floated or grounded if unused. |+| 34 | SEN6 | input | Channel 6 current-sense input referenced to KSENSC via the 0.200Ω sense resistor; connect to GND if the channel is unused. |+| 35 | GAT6 | output | Channel 6 gate drive output to the external N-channel MOSFET; leave floating if unused. |+| 36 | GAT7 | output | Channel 7 gate drive output to the external N-channel MOSFET; leave floating if unused. |+| 37 | SEN7 | input | Channel 7 current-sense input referenced to KSENSD via the 0.200Ω sense resistor; connect to GND if the channel is unused. |+| 38 | DRAIN7 | input | Channel 7 output voltage monitor and detection sense; may be floated or grounded if unused. |+| 39 | KSENSD | input | Kelvin point connection for SEN7 and SEN8. |+| 40 | DRAIN8 | input | Channel 8 output voltage monitor and detection sense; may be floated or grounded if unused. |+| 41 | SEN8 | input | Channel 8 current-sense input referenced to KSENSD via the 0.200Ω sense resistor; connect to GND if the channel is unused. |+| 42 | GAT8 | output | Channel 8 gate drive output to the external N-channel MOSFET; leave floating if unused. |+| 43 | VDD | power_in | 3.3V digital logic supply (3V to 3.6V recommended), bypassed with 0.1µF to DGND. |+| 44 | RESET | input | Active-low reset input that resets the device; internally pulled up to VDD. |+| 45 | INT | output | Open-drain interrupt output, pulled low when a bit in the interrupt register is set. |+| 46 | DGND | power_in | Digital ground; connect to the GND plane and exposed thermal pad. |+| 47 | TEST5 | bidirectional | Internal test pin used for test purposes only; keep open. |+| 48 | A1 | input | I2C address line A1, internally pulled up to VDD. |+| 49 | A2 | input | I2C address line A2, internally pulled up to VDD. |+| 50 | A3 | input | I2C address line A3, internally pulled up to VDD. |+| 51 | A4 | input | I2C address line A4, internally pulled up to VDD. |+| 52 | AUTO | bidirectional | Autonomous mode enable and selection pin: floating disables autonomous mode, RAUTO to GND selects the port power allocation, with a 10nF capacitor required when RAUTO is used. |+| 53 | SCL | input | Serial clock input for the I2C bus. |+| 54 | SDAI | input | Serial data input for the I2C bus; can be tied to SDAO in non-isolated systems. |+| 55 | SDAO | output | Open-drain I2C serial data output requiring an external pull-up; can be tied to SDAI in non-isolated systems. |+| 56 | OSS | input | Active-high fast shutdown input for channels 1-8, internally pulled down to DGND with a 1µs to 5µs deglitch filter. |+| 57 | EP | power_in | Exposed thermal pad; DGND and AGND must be connected to it for proper operation. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | QFN-56-EP(8x8) |+| Category | Interface |+| Pins | 57 |++## CAD (KiCad official)++- Symbol: `TPS23881RTQR`+- Footprint: `Package_DFN_QFN:QFN-56-1EP_8x8mm_P0.5mm_EP4.5x5.2mm`+- 3D model: QFN-56-EP(8x8) (KiCad packages3D, STEP)+- 3D model files: `tps23881rtqr-etched.step` / `tps23881rtqr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tps23881rtqr.step` / `tps23881rtqr.glb` are the bare package body.++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/tps23881) (133 pp, sha256 `e4f4fdd814bbae94`, retrieved 2026-10-01, tier: lcsc)+- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.+- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-sonnet-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/tps23881rtqr-datasheet.pdf)
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Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "interface",+ "tps23881rtqr",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "tps23881rtqr.kicad_sym",+ "tps23881rtqr.kicad_mod",+ "tps23881rtqr.glb",+ "tps23881rtqr.step",+ "tps23881rtqr.lbr",+ "docs/hero.png",+ "docs/tps23881rtqr-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html"+ ],+ "component": {+ "mpn": "TPS23881RTQR",+ "manufacturer": "Texas Instruments",+ "package": "QFN-56-EP(8x8)",+ "pin_count": 57,+ "category": "Interface",+ "subcategory": "Ethernet Transceivers",+ "datasheet": "https://www.ti.com/cn/lit/gpn/tps23881",+ "parts": {+ "symbol": "tps23881rtqr.kicad_sym",+ "footprint": "tps23881rtqr.kicad_mod",+ "model_3d": "tps23881rtqr-etched.glb",+ "model_3d_plain": "tps23881rtqr.glb",+ "model_3d_step": "tps23881rtqr-etched.step",+ "model_3d_step_plain": "tps23881rtqr.step",+ "lbr": "tps23881rtqr.lbr"+ },+ "distributor_links": {+ "lcsc": "C469893",+ "digikey": "296-TPS23881RTQRTR-ND",+ "mouser": "595-TPS23881RTQR"+ },+ "distributor_check": {+ "checked_at": "2026-10-01T16:00:14Z",+ "source": "Component Ocean /api/assign-pns",+ "digikey": {+ "pn": "296-TPS23881RTQRTR-ND",+ "status": "found",+ "lifecycle": "Active"+ },+ "mouser": {+ "pn": "595-TPS23881RTQR",+ "status": "found"+ }+ },+ "pins": [+ {+ "number": "1",+ "name": "GAT1",+ "type": "output",+ "description": "Channel 1 gate drive output to the external N-channel MOSFET; leave floating if unused."+ },+ {+ "number": "2",+ "name": "SEN1",+ "type": "input",+ "description": "Channel 1 current-sense input referenced to KSENSA via the 0.200Ω sense resistor; connect to GND if the channel is unused."+ },+ {+ "number": "3",+ "name": "DRAIN1",+ "type": "input",+ "description": "Channel 1 output voltage monitor and detection sense; may be floated or grounded if unused."+ },+ {+ "number": "4",+ "name": "KSENSA",+ "type": "input",+ "description": "Kelvin point connection for SEN1 and SEN2."+ },+ {+ "number": "5",+ "name": "DRAIN2",+ "type": "input",+ "description": "Channel 2 output voltage monitor and detection sense; may be floated or grounded if unused."+ },+ {+ "number": "6",+ "name": "SEN2",+ "type": "input",+ "description": "Channel 2 current-sense input referenced to KSENSA via the 0.200Ω sense resistor; connect to GND if the channel is unused."+ },+ {+ "number": "7",+ "name": "GAT2",+ "type": "output",+ "description": "Channel 2 gate drive output to the external N-channel MOSFET; leave floating if unused."+ },+ {+ "number": "8",+ "name": "GAT3",+ "type": "output",+ "description": "Channel 3 gate drive output to the external N-channel MOSFET; leave floating if unused."+ },+ {+ "number": "9",+ "name": "SEN3",+ "type": "input",+ "description": "Channel 3 current-sense input referenced to KSENSB via the 0.200Ω sense resistor; connect to GND if the channel is unused."+ },+ {+ "number": "10",+ "name": "DRAIN3",+ "type": "input",+ "description": "Channel 3 output voltage monitor and detection sense; may be floated or grounded if unused."+ },+ {+ "number": "11",+ "name": "KSENSB",+ "type": "input",+ "description": "Kelvin point connection for SEN3 and SEN4."+ },+ {+ "number": "12",+ "name": "DRAIN4",+ "type": "input",+ "description": "Channel 4 output voltage monitor and detection sense; may be floated or grounded if unused."+ },+ {+ "number": "13",+ "name": "SEN4",+ "type": "input",+ "description": "Channel 4 current-sense input referenced to KSENSB via the 0.200Ω sense resistor; connect to GND if the channel is unused."+ },+ {+ "number": "14",+ "name": "GAT4",+ "type": "output",+ "description": "Channel 4 gate drive output to the external N-channel MOSFET; leave floating if unused."+ },+ {+ "number": "15",+ "name": "NC",+ "type": "unconnected",+ "description": "No connect; internally biased at 1/3 or 2/3 of VPWR to grade the VPWR voltage gradient, keep open."+ },+ {+ "number": "16",+ "name": "NC",+ "type": "unconnected",+ "description": "No connect; internally biased at 1/3 or 2/3 of VPWR to grade the VPWR voltage gradient, keep open."+ },+ {+ "number": "17",+ "name": "VPWR",+ "type": "power_in",+ "description": "Analog 54V positive supply (44V to 57V recommended, 70V absolute max), bypassed with 0.1µF to AGND."+ },+ {+ "number": "18",+ "name": "NC",+ "type": "unconnected",+ "description": "No connect; internally biased at 1/3 or 2/3 of VPWR to grade the VPWR voltage gradient, keep open."+ },+ {+ "number": "19",+ "name": "NC",+ "type": "unconnected",+ "description": "No connect; internally biased at 1/3 or 2/3 of VPWR to grade the VPWR voltage gradient, keep open."+ },+ {+ "number": "20",+ "name": "TEST4",+ "type": "bidirectional",+ "description": "Internal test pin used for test purposes only; keep open."+ },+ {+ "number": "21",+ "name": "AGND",+ "type": "power_in",+ "description": "Analog ground; connect to the GND plane and exposed thermal pad."+ },+ {+ "number": "22",+ "name": "NC",+ "type": "unconnected",+ "description": "No connect; keep open."+ },+ {+ "number": "23",+ "name": "TEST1",+ "type": "bidirectional",+ "description": "Internal test pin used for test purposes only (internal 50kΩ typical pull-down); keep open."+ },+ {+ "number": "24",+ "name": "TEST2",+ "type": "bidirectional",+ "description": "Internal test pin used for test purposes only (internal 50kΩ typical pull-down); keep open."+ },+ {+ "number": "25",+ "name": "TEST3",+ "type": "bidirectional",+ "description": "Internal test pin used for test purposes only; keep open."+ },+ {+ "number": "26",+ "name": "TEST0",+ "type": "bidirectional",+ "description": "Internal test pin used for test purposes only (internal 50kΩ typical pull-up); keep open."+ },+ {+ "number": "27",+ "name": "NC",+ "type": "unconnected",+ "description": "No connect; keep open."+ },+ {+ "number": "28",+ "name": "NC",+ "type": "unconnected",+ "description": "No connect; keep open."+ },+ {+ "number": "29",+ "name": "GAT5",+ "type": "output",+ "description": "Channel 5 gate drive output to the external N-channel MOSFET; leave floating if unused."+ },+ {+ "number": "30",+ "name": "SEN5",+ "type": "input",+ "description": "Channel 5 current-sense input referenced to KSENSC via the 0.200Ω sense resistor; connect to GND if the channel is unused."+ },+ {+ "number": "31",+ "name": "DRAIN5",+ "type": "input",+ "description": "Channel 5 output voltage monitor and detection sense; may be floated or grounded if unused."+ },+ {+ "number": "32",+ "name": "KSENSC",+ "type": "input",+ "description": "Kelvin point connection for SEN5 and SEN6."+ },+ {+ "number": "33",+ "name": "DRAIN6",+ "type": "input",+ "description": "Channel 6 output voltage monitor and detection sense; may be floated or grounded if unused."+ },+ {+ "number": "34",+ "name": "SEN6",+ "type": "input",+ "description": "Channel 6 current-sense input referenced to KSENSC via the 0.200Ω sense resistor; connect to GND if the channel is unused."+ },+ {+ "number": "35",+ "name": "GAT6",+ "type": "output",+ "description": "Channel 6 gate drive output to the external N-channel MOSFET; leave floating if unused."+ },+ {+ "number": "36",+ "name": "GAT7",+ "type": "output",+ "description": "Channel 7 gate drive output to the external N-channel MOSFET; leave floating if unused."+ },+ {+ "number": "37",+ "name": "SEN7",+ "type": "input",+ "description": "Channel 7 current-sense input referenced to KSENSD via the 0.200Ω sense resistor; connect to GND if the channel is unused."+ },+ {+ "number": "38",+ "name": "DRAIN7",+ "type": "input",+ "description": "Channel 7 output voltage monitor and detection sense; may be floated or grounded if unused."+ },+ {+ "number": "39",+ "name": "KSENSD",+ "type": "input",+ "description": "Kelvin point connection for SEN7 and SEN8."+ },+ {+ "number": "40",+ "name": "DRAIN8",+ "type": "input",+ "description": "Channel 8 output voltage monitor and detection sense; may be floated or grounded if unused."+ },+ {+ "number": "41",+ "name": "SEN8",+ "type": "input",+ "description": "Channel 8 current-sense input referenced to KSENSD via the 0.200Ω sense resistor; connect to GND if the channel is unused."+ },+ {+ "number": "42",+ "name": "GAT8",+ "type": "output",+ "description": "Channel 8 gate drive output to the external N-channel MOSFET; leave floating if unused."+ },+ {+ "number": "43",+ "name": "VDD",+ "type": "power_in",+ "description": "3.3V digital logic supply (3V to 3.6V recommended), bypassed with 0.1µF to DGND."+ },+ {+ "number": "44",+ "name": "RESET",+ "type": "input",+ "description": "Active-low reset input that resets the device; internally pulled up to VDD."+ },+ {+ "number": "45",+ "name": "INT",+ "type": "output",+ "description": "Open-drain interrupt output, pulled low when a bit in the interrupt register is set."+ },+ {+ "number": "46",+ "name": "DGND",+ "type": "power_in",+ "description": "Digital ground; connect to the GND plane and exposed thermal pad."+ },+ {+ "number": "47",+ "name": "TEST5",+ "type": "bidirectional",+ "description": "Internal test pin used for test purposes only; keep open."+ },+ {+ "number": "48",+ "name": "A1",+ "type": "input",+ "description": "I2C address line A1, internally pulled up to VDD."+ },+ {+ "number": "49",+ "name": "A2",+ "type": "input",+ "description": "I2C address line A2, internally pulled up to VDD."+ },+ {+ "number": "50",+ "name": "A3",+ "type": "input",+ "description": "I2C address line A3, internally pulled up to VDD."+ },+ {+ "number": "51",+ "name": "A4",+ "type": "input",+ "description": "I2C address line A4, internally pulled up to VDD."+ },+ {+ "number": "52",+ "name": "AUTO",+ "type": "bidirectional",+ "description": "Autonomous mode enable and selection pin: floating disables autonomous mode, RAUTO to GND selects the port power allocation, with a 10nF capacitor required when RAUTO is used."+ },+ {+ "number": "53",+ "name": "SCL",+ "type": "input",+ "description": "Serial clock input for the I2C bus."+ },+ {+ "number": "54",+ "name": "SDAI",+ "type": "input",+ "description": "Serial data input for the I2C bus; can be tied to SDAO in non-isolated systems."+ },+ {+ "number": "55",+ "name": "SDAO",+ "type": "output",+ "description": "Open-drain I2C serial data output requiring an external pull-up; can be tied to SDAI in non-isolated systems."+ },+ {+ "number": "56",+ "name": "OSS",+ "type": "input",+ "description": "Active-high fast shutdown input for channels 1-8, internally pulled down to DGND with a 1µs to 5µs deglitch filter."+ },+ {+ "number": "57",+ "name": "EP",+ "type": "power_in",+ "description": "Exposed thermal pad; DGND and AGND must be connected to it for proper operation."+ }+ ],+ "provenance": {+ "extractor": "extract_pins 0.3",+ "factory_chain": {+ "factory": "2.0.0",+ "extractor": "extract_pins 0.3",+ "primary_model": "claude-haiku-4-5-20251001",+ "primary_mode": "text",+ "consensus_model": "claude-sonnet-5-5",+ "consensus": "agreed",+ "guards": "pin_guards 0.1: passed",+ "guard_notes": [+ "extractor flagged: Pin 52 conflict: Listed as both NC (no connection) in the NC pins category (page 5) and as AUTO (aut; TEST0-5 pins (20, 23, 24, 25, 26, 47) are listed as for internal use and test only with unclear func",+ "exposed pad 57 added from the footprint"+ ],+ "pages_sent": 73,+ "cost_usd": 0.5609,+ "at": "2026-10-01T15:59:54"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/tps23881",+ "pages": 133,+ "sha256": "e4f4fdd814bbae94",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 57,+ "described": 57,+ "cites_pages": true,+ "refuses_to_fabricate": true+ }+ },+ "viewers": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ }+ },+ "visibility": "public",+ "org": "adom",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}