component
TMDS181IRGZT
Public Made by Adomby adom
Texas Instruments Interface - Specialized, VQFN-48-EP(7x7). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"schema_version": 1,
"type": "component",
"slug": "tmds181irgzt",
"title": "TMDS181IRGZT",
"brief": "Texas Instruments Interface - Specialized, VQFN-48-EP(7x7). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"version": "0.1.0",
"license": "CC-BY-SA-4.0",
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"communication interface chip-uart-485-232",
"tmds181irgzt",
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"extractor-text"
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"component": {
"mpn": "TMDS181IRGZT",
"manufacturer": "Texas Instruments",
"package": "VQFN-48-EP(7x7)",
"pin_count": 49,
"category": "Communication Interface Chip/UART/485/232",
"subcategory": "Interface - Specialized",
"datasheet": "https://www.ti.com/cn/lit/gpn/tmds181",
"parts": {
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"footprint": "tmds181irgzt.kicad_mod",
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"lbr": "tmds181irgzt.lbr"
},
"distributor_links": {
"lcsc": "C2652887",
"digikey": "296-44627-2-ND"
},
"distributor_check": {
"checked_at": "2026-10-08T22:53:56Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "296-44627-2-ND",
"status": "found",
"lifecycle": "Active"
},
"mouser": {
"pn": null,
"status": "error"
}
},
"pins": [
{
"number": "1",
"name": "SWAP/POL",
"type": "input",
"description": "Three-level input lane swap and polarity control: H gives receive lane polarity swap (retimer mode only), L gives receive lane swap (redriver and retimer modes), and no connect gives normal operation."
},
{
"number": "2",
"name": "IN_D2p",
"type": "input",
"description": "TMDS channel 2 differential input, positive side of the main link."
},
{
"number": "3",
"name": "IN_D2n",
"type": "input",
"description": "TMDS channel 2 differential input, negative side of the main link."
},
{
"number": "4",
"name": "HPD_SRC",
"type": "output",
"description": "Hot plug detect output to the source side."
},
{
"number": "5",
"name": "IN_D1p",
"type": "input",
"description": "TMDS channel 1 differential input, positive side of the main link."
},
{
"number": "6",
"name": "IN_D1n",
"type": "input",
"description": "TMDS channel 1 differential input, negative side of the main link."
},
{
"number": "7",
"name": "GND",
"type": "power_in",
"description": "Ground."
},
{
"number": "8",
"name": "IN_D0p",
"type": "input",
"description": "TMDS channel 0 differential input, positive side of the main link."
},
{
"number": "9",
"name": "IN_D0n",
"type": "input",
"description": "TMDS channel 0 differential input, negative side of the main link."
},
{
"number": "10",
"name": "I2C_EN/PIN",
"type": "input",
"description": "High puts the device into I2C control mode; low puts the device into pin strap mode."
},
{
"number": "11",
"name": "IN_CLKp",
"type": "input",
"description": "Clock differential input, positive side of the main link."
},
{
"number": "12",
"name": "IN_CLKn",
"type": "input",
"description": "Clock differential input, negative side of the main link."
},
{
"number": "13",
"name": "VCC",
"type": "power_in",
"description": "3.3 V power supply."
},
{
"number": "14",
"name": "VDD",
"type": "power_in",
"description": "1.2 V power supply."
},
{
"number": "15",
"name": "SCL_CTL",
"type": "input",
"description": "I2C clock signal; when I2C_EN is low, pin strapping takes priority and these functions cannot be changed by I2C."
},
{
"number": "16",
"name": "SDA_CTL",
"type": "bidirectional",
"description": "I2C data signal; when I2C_EN is low, pin strapping takes priority and these functions cannot be changed by I2C."
},
{
"number": "17",
"name": "SIG_EN",
"type": "input",
"description": "Signal detector circuit enable: high enables the signal detect circuit, low disables it; internal weak pull-down."
},
{
"number": "18",
"name": "NC",
"type": "unconnected",
"description": "No connect."
},
{
"number": "19",
"name": "GND",
"type": "power_in",
"description": "Ground."
},
{
"number": "20",
"name": "PRE_SEL",
"type": "input",
"description": "Three-level de-emphasis control when I2C_EN/PIN is low: L = -2 dB, no connect = 0 dB, H = reserved; controlled through I2C when I2C_EN/PIN is high."
},
{
"number": "21",
"name": "EQ_SEL/A0",
"type": "input",
"description": "Three-level input receive equalization pin strap when I2C_EN/PIN is low: L = fixed EQ at 7.5 dB at 3 GHz, no connect = adaptive EQ, H = fixed at 14 dB at 3 GHz; serves as I2C address bit 1 when I2C_EN/PIN is high."
},
{
"number": "22",
"name": "VSADJ",
"type": "input",
"description": "TMDS-compliant voltage swing control nominal resistor to GND."
},
{
"number": "23",
"name": "VDD",
"type": "power_in",
"description": "1.2 V power supply."
},
{
"number": "24",
"name": "VDD",
"type": "power_in",
"description": "1.2 V power supply."
},
{
"number": "25",
"name": "OUT_CLKn",
"type": "output",
"description": "TMDS data clock differential output, negative side (fail-safe main link output)."
},
{
"number": "26",
"name": "OUT_CLKp",
"type": "output",
"description": "TMDS data clock differential output, positive side (fail-safe main link output)."
},
{
"number": "27",
"name": "A1",
"type": "input",
"description": "High I2C address bit 2 for I2C programming; weak internal pull-down; leave as no connect in pin strapping mode."
},
{
"number": "28",
"name": "OUT_D0n",
"type": "output",
"description": "TMDS data 0 differential output, negative side (fail-safe main link output)."
},
{
"number": "29",
"name": "OUT_D0p",
"type": "output",
"description": "TMDS data 0 differential output, positive side (fail-safe main link output)."
},
{
"number": "30",
"name": "GND",
"type": "power_in",
"description": "Ground."
},
{
"number": "31",
"name": "OUT_D1n",
"type": "output",
"description": "TMDS data 1 differential output, negative side (fail-safe main link output)."
},
{
"number": "32",
"name": "OUT_D1p",
"type": "output",
"description": "TMDS data 1 differential output, positive side (fail-safe main link output)."
},
{
"number": "33",
"name": "HPD_SNK",
"type": "input",
"description": "Hot plug detect input from the sink side."
},
{
"number": "34",
"name": "OUT_D2n",
"type": "output",
"description": "TMDS data 2 differential output, negative side (fail-safe main link output)."
},
{
"number": "35",
"name": "OUT_D2p",
"type": "output",
"description": "TMDS data 2 differential output, positive side (fail-safe main link output)."
},
{
"number": "36",
"name": "TX_TERM_CTL",
"type": "input",
"description": "Three-level transmit termination control: H = no transmit termination, L = approximately 75 to 150 Ω termination, no connect = automatic selection by data rate."
},
{
"number": "37",
"name": "VDD",
"type": "power_in",
"description": "1.2 V power supply."
},
{
"number": "38",
"name": "SCL_SNK",
"type": "bidirectional",
"description": "Sink-side TMDS port bidirectional DDC clock line."
},
{
"number": "39",
"name": "SDA_SNK",
"type": "bidirectional",
"description": "Sink-side TMDS port bidirectional DDC data line."
},
{
"number": "40",
"name": "NC",
"type": "unconnected",
"description": "No connect."
},
{
"number": "41",
"name": "GND",
"type": "power_in",
"description": "Ground."
},
{
"number": "42",
"name": "OE",
"type": "input",
"description": "Operation enable/reset: L = power-down mode, H = normal operation; internal weak pull-up, and the device resets on a H-to-L transition."
},
{
"number": "43",
"name": "VCC",
"type": "power_in",
"description": "3.3 V power supply."
},
{
"number": "44",
"name": "ARC_OUT",
"type": "output",
"description": "Audio return channel output."
},
{
"number": "45",
"name": "SPDIF_IN",
"type": "input",
"description": "SPDIF signal input."
},
{
"number": "46",
"name": "SCL_SRC",
"type": "bidirectional",
"description": "Source-side TMDS port bidirectional DDC clock line."
},
{
"number": "47",
"name": "SDA_SRC",
"type": "bidirectional",
"description": "Source-side TMDS port bidirectional DDC data line."
},
{
"number": "48",
"name": "VDD",
"type": "power_in",
"description": "1.2 V power supply."
},
{
"number": "49",
"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 thermal pad (GND, 'Thermal pad G' in the pin table) has no printed pin number, so it is not incl; The pin table lists ARC_OUT and SPDIF_IN together under one 'I/O' type. Here SPDIF_IN is typed input; The pin table prints the type of SDA_CTL as 'I/0' (zero). It is treated as bidirectional, matching i",
"exposed pad 49 added from the footprint"
],
"pages_sent": 12,
"cost_usd": 0.1118,
"at": "2026-10-08T22:52:55"
},
"datasheet": {
"url": "https://www.ti.com/cn/lit/gpn/tmds181",
"pages": 59,
"sha256": "80f8eef3073a8094",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 49,
"described": 49,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
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"footprint": "viewers/footprint.html"
},
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"units": "mm",
"origin": "footprint origin = pad-pattern centre",
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"extents_mm": [
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"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "f2b38b0b4bf967c77e683e8d4599608b9f0503055ec535b93c4ebb5d0163e916",
"checked": "2026-10-08",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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]
},
"metadata": {
"specs": {
"Manufacturer": "Texas Instruments",
"Package": "VQFN-48-EP(7x7)",
"Category": "Communication Interface Chip/UART/485/232",
"Pins": "49"
}
},
"variants": [],
"sections": [
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"discovery_triggers": [
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],
"discovery_pitch": "TMDS181IRGZT (Texas Instruments) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
"author": {
"name": "Ray",
"email": "[email protected]"
},
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