component
DS90UB904QSQX
Public Made by Adomby adom
Texas Instruments Serializers / Deserializers, WQFN-48-EP(7x7). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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"title": "DS90UB904QSQX",
"brief": "Texas Instruments Serializers / Deserializers, WQFN-48-EP(7x7). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
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"component": {
"mpn": "DS90UB904QSQX",
"manufacturer": "Texas Instruments",
"package": "WQFN-48-EP(7x7)",
"pin_count": 49,
"category": "Interface ICs",
"subcategory": "Serializers / Deserializers",
"datasheet": "https://www.ti.com/lit/ds/symlink/ds90ub904qsqx.pdf",
"parts": {
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"checked_at": "2026-11-02T19:16:50Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": null,
"status": "no match"
},
"mouser": {
"pn": null,
"status": "no match"
}
},
"pins": [
{
"number": "1",
"name": "SDA",
"type": "bidirectional",
"description": "Open-drain data line of the I2C-compatible bidirectional control bus, requiring an external pull-up resistor to VDDIO."
},
{
"number": "2",
"name": "SCL",
"type": "bidirectional",
"description": "Open-drain clock line of the I2C-compatible bidirectional control bus, requiring an external pull-up resistor to VDDIO."
},
{
"number": "3",
"name": "VDDSSCG",
"type": "power_in",
"description": "SSCG digital power, 1.8V ±5%, which must be connected whether or not the SSCG function is in operation."
},
{
"number": "4",
"name": "PCLK",
"type": "output",
"description": "LVCMOS pixel clock output whose strobe edge is set by the RRFB control register."
},
{
"number": "5",
"name": "ROUT[20]",
"type": "output",
"description": "LVCMOS parallel data output bit 20."
},
{
"number": "6",
"name": "ROUT[19]",
"type": "output",
"description": "LVCMOS parallel data output bit 19."
},
{
"number": "7",
"name": "VDDIO3",
"type": "power_in",
"description": "LVCMOS I/O buffer power for the single-ended outputs and control inputs, 1.8V ±5% or 3.3V ±10%."
},
{
"number": "8",
"name": "ROUT[18]",
"type": "output",
"description": "LVCMOS parallel data output bit 18."
},
{
"number": "9",
"name": "ROUT[17]",
"type": "output",
"description": "LVCMOS parallel data output bit 17."
},
{
"number": "10",
"name": "ROUT[16]",
"type": "output",
"description": "LVCMOS parallel data output bit 16."
},
{
"number": "11",
"name": "ROUT[15]",
"type": "output",
"description": "LVCMOS parallel data output bit 15."
},
{
"number": "12",
"name": "ROUT[14]",
"type": "output",
"description": "LVCMOS parallel data output bit 14."
},
{
"number": "13",
"name": "ROUT[13]",
"type": "output",
"description": "LVCMOS parallel data output bit 13."
},
{
"number": "14",
"name": "ROUT[12]",
"type": "output",
"description": "LVCMOS parallel data output bit 12."
},
{
"number": "15",
"name": "ROUT[11]",
"type": "output",
"description": "LVCMOS parallel data output bit 11."
},
{
"number": "16",
"name": "ROUT[10]",
"type": "output",
"description": "LVCMOS parallel data output bit 10."
},
{
"number": "17",
"name": "VDDD",
"type": "power_in",
"description": "Digital core power, 1.8V ±5%."
},
{
"number": "18",
"name": "ROUT[9]",
"type": "output",
"description": "LVCMOS parallel data output bit 9."
},
{
"number": "19",
"name": "ROUT[8]",
"type": "output",
"description": "LVCMOS parallel data output bit 8."
},
{
"number": "20",
"name": "VDDIO2",
"type": "power_in",
"description": "LVCMOS I/O buffer power for the single-ended outputs and control inputs, 1.8V ±5% or 3.3V ±10%."
},
{
"number": "21",
"name": "ROUT[7]",
"type": "output",
"description": "LVCMOS parallel data output bit 7."
},
{
"number": "22",
"name": "ROUT[6]",
"type": "output",
"description": "LVCMOS parallel data output bit 6."
},
{
"number": "23",
"name": "ROUT[5]",
"type": "output",
"description": "LVCMOS parallel data output bit 5."
},
{
"number": "24",
"name": "ROUT[4]",
"type": "output",
"description": "LVCMOS parallel data output bit 4."
},
{
"number": "25",
"name": "ROUT[3]",
"type": "output",
"description": "LVCMOS parallel data output bit 3."
},
{
"number": "26",
"name": "ROUT[2]",
"type": "output",
"description": "LVCMOS parallel data output bit 2."
},
{
"number": "27",
"name": "ROUT[1]",
"type": "output",
"description": "LVCMOS parallel data output bit 1."
},
{
"number": "28",
"name": "ROUT[0]",
"type": "output",
"description": "LVCMOS parallel data output bit 0."
},
{
"number": "29",
"name": "VDDIO1",
"type": "power_in",
"description": "LVCMOS I/O buffer power for the single-ended outputs and control inputs, 1.8V ±5% or 3.3V ±10%."
},
{
"number": "30",
"name": "GPI[3]",
"type": "input",
"description": "LVCMOS general-purpose input that can be used to control and respond to various commands."
},
{
"number": "31",
"name": "GPI[2]",
"type": "input",
"description": "LVCMOS general-purpose input that can be used to control and respond to various commands."
},
{
"number": "32",
"name": "GPI[1]",
"type": "input",
"description": "LVCMOS general-purpose input that can be used to control and respond to various commands."
},
{
"number": "33",
"name": "GPI[0]",
"type": "input",
"description": "LVCMOS general-purpose input that can be used to control and respond to various commands."
},
{
"number": "34",
"name": "LOCK",
"type": "output",
"description": "LOCK status output: high when the PLL is locked, low when unlocked (ROUT and PCLK states then set by the OSS_SEL control register); may be used as link status."
},
{
"number": "35",
"name": "PDB",
"type": "input",
"description": "Power-down input with pull-down: high enables the deserializer, low powers it down and resets control register data to default values."
},
{
"number": "36",
"name": "VDDR",
"type": "power_in",
"description": "Rx analog power, 1.8V ±5%."
},
{
"number": "37",
"name": "PASS",
"type": "output",
"description": "BIST pass output: high for error-free transmission, low if one or more errors were detected in the received payload; leave open if unused, test point recommended."
},
{
"number": "38",
"name": "RES/CMLOUTP",
"type": "output",
"description": "Reserved pin / non-inverting CML monitor output of the equalized differential signal, enabled via control registers; route to a test point or leave open if unused."
},
{
"number": "39",
"name": "RES/CMLOUTN",
"type": "output",
"description": "Reserved pin / inverting CML monitor output of the equalized differential signal, enabled via control registers; route to a test point or leave open if unused."
},
{
"number": "40",
"name": "VDDCML",
"type": "power_in",
"description": "Bidirectional channel driver analog power, 1.8V ±5%."
},
{
"number": "41",
"name": "RIN+",
"type": "bidirectional",
"description": "Non-inverting CML differential input and bidirectional control channel output; the interconnect must be AC coupled with a 100 nF capacitor."
},
{
"number": "42",
"name": "RIN-",
"type": "bidirectional",
"description": "Inverting CML differential input and bidirectional control channel output; the interconnect must be AC coupled with a 100 nF capacitor."
},
{
"number": "43",
"name": "RES",
"type": "unconnected",
"description": "Reserved pin; leave open."
},
{
"number": "44",
"name": "BISTEN",
"type": "input",
"description": "BIST enable input with pull-down: high enables BIST mode, low disables it."
},
{
"number": "45",
"name": "VDDPLL",
"type": "power_in",
"description": "PLL analog power, 1.8V ±5%."
},
{
"number": "46",
"name": "RES",
"type": "input",
"description": "Reserved pin that must be tied LOW."
},
{
"number": "47",
"name": "MODE",
"type": "input",
"description": "I2C mode select input with pull-up: low is master mode, high is slave mode (default)."
},
{
"number": "48",
"name": "ID[x]",
"type": "input",
"description": "Analog device ID address select, set by a resistor to ground and a 10 kΩ pull-up to the 1.8V rail."
},
{
"number": "49",
"name": "EP",
"type": "passive",
"description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
}
],
"provenance": {
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"primary_model": "claude-sonnet-5-5",
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"guards": "pin_guards 0.1: passed",
"guard_notes": [
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"exposed pad 49 added from the footprint",
"dropped thermal pad ['EP'] absent from footprint"
],
"pages_sent": 15,
"cost_usd": 0.3156,
"at": "2026-11-02T19:16:17"
},
"datasheet": {
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"pages": 46,
"sha256": "05583a291c80f2ba",
"source_tier": "mfr"
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"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 49,
"described": 49,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
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},
"metadata": {
"specs": {
"Manufacturer": "Texas Instruments",
"Package": "WQFN-48-EP(7x7)",
"Category": "Interface ICs",
"Pins": "49"
},
"characteristics": {
"version": 1,
"source": "datasheet",
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"rows": [
{
"name": "Supply Voltage VDDn",
"symbol": "VDDn",
"kind": "recommended_operating",
"unit": "V",
"min": 1.71,
"typ": 1.8,
"max": 1.89,
"conditions": "",
"source_page": 7,
"source": "datasheet"
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{
"name": "LVCMOS Supply Voltage VDDIO (1.8V)",
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"min": 1.71,
"typ": 1.8,
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{
"name": "LVCMOS Supply Voltage VDDIO (3.3V)",
"symbol": "VDDIO",
"kind": "recommended_operating",
"unit": "V",
"min": 3,
"typ": 3.3,
"max": 3.6,
"conditions": "",
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{
"name": "Operating Free Air Temperature",
"symbol": "TA",
"kind": "recommended_operating",
"unit": "°C",
"min": -40,
"typ": 25,
"max": 105,
"conditions": "",
"source_page": 7,
"source": "datasheet"
},
{
"name": "PCLK Clock Frequency",
"symbol": "",
"kind": "recommended_operating",
"unit": "MHz",
"min": 10,
"typ": null,
"max": 43,
"conditions": "",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Supply Noise VDDn (1.8V)",
"symbol": "",
"kind": "recommended_operating",
"unit": "mVp-p",
"min": null,
"typ": null,
"max": 25,
"conditions": "",
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{
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{
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"unit": "V",
"min": -0.3,
"typ": null,
"max": 2.5,
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{
"name": "Supply Voltage VDDIO",
"symbol": "VDDIO",
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"min": -0.3,
"typ": null,
"max": 4,
"conditions": "",
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"source": "datasheet"
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{
"name": "LVCMOS Input Voltage",
"symbol": "",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": null,
"conditions": "max = VDDIO + 0.3V",
"source_page": 7,
"source": "datasheet"
},
{
"name": "CML Receiver I/O Voltage",
"symbol": "",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": null,
"conditions": "max = VDD + 0.3V",
"source_page": 7,
"source": "datasheet"
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{
"name": "Junction Temperature",
"symbol": "",
"kind": "absolute_maximum",
"unit": "°C",
"min": null,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Storage Temperature",
"symbol": "",
"kind": "absolute_maximum",
"unit": "°C",
"min": -65,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Thermal resistance junction-ambient, 48 Lead WQFN",
"symbol": "θJA",
"kind": "thermal",
"unit": "°C/W",
"min": null,
"typ": 26.9,
"max": null,
"conditions": "based on 16 thermal vias",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Thermal resistance junction-case, 48 Lead WQFN",
"symbol": "θJC",
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"unit": "°C/W",
"min": null,
"typ": 4.4,
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"conditions": "based on 16 thermal vias",
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{
"name": "ESD HBM",
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"kind": "absolute_maximum",
"unit": "kV",
"min": null,
"typ": null,
"max": 8,
"conditions": "≥±8 kV",
"source_page": 7,
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{
"name": "ESD CDM",
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"kind": "absolute_maximum",
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"min": null,
"typ": null,
"max": 1,
"conditions": "≥±1 kV",
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{
"name": "High Level Input Voltage 3.3V I/O",
"symbol": "VIH",
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"unit": "V",
"min": 2,
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"source_page": 8,
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{
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{
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"symbol": "IIN",
"kind": "electrical",
"unit": "µA",
"min": -20,
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"conditions": "VIN = 0V or 3.6V, VIN = 3.0V to 3.6V",
"source_page": 8,
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{
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"symbol": "VOH",
"kind": "electrical",
"unit": "V",
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"source": "datasheet"
},
{
"name": "Low Level Output Voltage 3.3V I/O",
"symbol": "VOL",
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{
"name": "Input Current 1.8V I/O",
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"unit": "µA",
"min": -20,
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