component
L6474HTR
Public Made by Adomby adom
STMicroelectronics Motor Driver ICs, HTSSOP-28-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"slug": "l6474htr",
"version": "0.1.0",
"type": "component",
"description": "STMicroelectronics Motor Driver ICs, HTSSOP-28-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"tags": [
"component",
"power management ics",
"l6474htr",
"factory-2.0.0",
"extractor-text"
],
"dependencies": {},
"hero": {
"type": "image",
"path": "docs/hero.png"
},
"files": [
"page.json",
"README.md",
"l6474htr.kicad_sym",
"l6474htr.kicad_mod",
"l6474htr.glb",
"l6474htr.step",
"l6474htr.lbr",
"docs/hero.png",
"docs/l6474htr-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"l6474htr-hero.glb",
"l6474htr-hero.overlay.json",
"l6474htr-etched.glb"
],
"component": {
"mpn": "L6474HTR",
"manufacturer": "STMicroelectronics",
"package": "HTSSOP-28-EP",
"pin_count": 29,
"category": "Power Management ICs",
"subcategory": "Motor Driver ICs",
"datasheet": "https://www.st.com/resource/en/datasheet/l6474htr.pdf",
"parts": {
"symbol": "l6474htr.kicad_sym",
"footprint": "l6474htr.kicad_mod",
"model_3d": "l6474htr-hero.glb",
"model_3d_plain": "l6474htr-etched.glb",
"model_3d_step": "l6474htr-etched.step",
"model_3d_step_plain": "l6474htr.step",
"lbr": "l6474htr.lbr"
},
"distributor_links": {
"lcsc": "C2150658",
"digikey": "497-12828-2-ND",
"mouser": "511-L6474HTR"
},
"distributor_check": {
"checked_at": "2026-11-02T17:29:41Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "497-12828-2-ND",
"status": "found"
},
"mouser": {
"pn": "511-L6474HTR",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "OUT1A",
"type": "output",
"description": "Full bridge A output 1."
},
{
"number": "2",
"name": "VSA",
"type": "power_in",
"description": "Full bridge A power supply pin; it must be connected to VSB."
},
{
"number": "3",
"name": "STBY\\RST",
"type": "input",
"description": "Standby and reset pin: LOW logic level resets the logic and puts the device into standby mode; if not used, it should be connected to VDD."
},
{
"number": "4",
"name": "DIR",
"type": "input",
"description": "Direction input."
},
{
"number": "5",
"name": "ADCIN",
"type": "input",
"description": "Internal analog to digital converter input."
},
{
"number": "6",
"name": "VREG",
"type": "power_out",
"description": "Internal 3 V voltage regulator output and 3.3 V external logic supply."
},
{
"number": "7",
"name": "OSCIN",
"type": "input",
"description": "Oscillator pin 1: connects an external oscillator or clock source; if unused, it should be left floating."
},
{
"number": "8",
"name": "OSCOUT",
"type": "output",
"description": "Oscillator pin 2: connects an external oscillator; when the internal oscillator is used this pin can supply 2/4/8/16 MHz, and if unused it should be left floating."
},
{
"number": "9",
"name": "AGND",
"type": "power_in",
"description": "Analog ground."
},
{
"number": "10",
"name": "CP",
"type": "output",
"description": "Charge pump oscillator output."
},
{
"number": "11",
"name": "VBOOT",
"type": "power_in",
"description": "Bootstrap voltage needed for driving the high-side power DMOS of both bridges (A and B)."
},
{
"number": "12",
"name": "VSB",
"type": "power_in",
"description": "Full bridge B power supply pin; it must be connected to VSA."
},
{
"number": "13",
"name": "PGND",
"type": "power_in",
"description": "Power ground pin."
},
{
"number": "14",
"name": "OUT1B",
"type": "output",
"description": "Full bridge B output 1."
},
{
"number": "15",
"name": "OUT2B",
"type": "output",
"description": "Full bridge B output 2."
},
{
"number": "16",
"name": "VSB",
"type": "power_in",
"description": "Full bridge B power supply pin; it must be connected to VSA."
},
{
"number": "17",
"name": "VDD",
"type": "power_in",
"description": "Logic outputs supply voltage (pull-up reference)."
},
{
"number": "18",
"name": "SDO",
"type": "output",
"description": "Data output pin for serial interface."
},
{
"number": "19",
"name": "CK",
"type": "input",
"description": "Serial interface clock."
},
{
"number": "20",
"name": "SDI",
"type": "input",
"description": "Data input pin for serial interface."
},
{
"number": "21",
"name": "DGND",
"type": "power_in",
"description": "Digital ground."
},
{
"number": "22",
"name": "SYNC",
"type": "output",
"description": "Synchronization signal, open drain output."
},
{
"number": "23",
"name": "CS",
"type": "input",
"description": "Chip select input pin for serial interface."
},
{
"number": "24",
"name": "FLAG",
"type": "output",
"description": "Status flag pin: an internal open drain transistor can pull the pin to GND when a programmed alarm condition occurs (step loss, OCD, thermal pre-warning or shutdown, UVLO, wrong command, non performable command)."
},
{
"number": "25",
"name": "STCK",
"type": "input",
"description": "Step clock input."
},
{
"number": "26",
"name": "VSA",
"type": "power_in",
"description": "Full bridge A power supply pin; it must be connected to VSB."
},
{
"number": "27",
"name": "PGND",
"type": "power_in",
"description": "Power ground pin."
},
{
"number": "28",
"name": "OUT2A",
"type": "output",
"description": "Full bridge A output 2."
},
{
"number": "29",
"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 HTSSOP28 pin numbers come from the HTSSOP column of Table 6 (Pin description), because the Figur"
],
"pages_sent": 23,
"cost_usd": 0.0327,
"at": "2026-11-02T17:29:34"
},
"datasheet": {
"url": "https://www.st.com/resource/en/datasheet/l6474htr.pdf",
"pages": 53,
"sha256": "fa9e2a4c268ffbcb",
"source_tier": "mfr"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 29,
"described": 29,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
{
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"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
7.2,
9.7,
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],
"zmin_mm": 0.0,
"centre_offset_mm": 0.0,
"footprint_binding": "identity",
"sha256": "ff242f1d3be9d09e7f929707a2c5b1ee974a4f882053b04bcdb1cd2cb21223ef",
"checked": "2026-11-02",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "l6474htr-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
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}
]
}
}