component
SIT1145AQTK
Public Made by Adomby adom
SIT CAN Transceivers, DFN-14(3x4.5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"schema_version": 1,
"type": "component",
"slug": "sit1145aqtk",
"title": "SIT1145AQTK",
"brief": "SIT CAN Transceivers, DFN-14(3x4.5). 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",
"interface",
"sit1145aqtk",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "SIT1145AQTK",
"manufacturer": "SIT",
"package": "DFN-14(3x4.5)",
"pin_count": 15,
"category": "Interface",
"subcategory": "CAN Transceivers",
"datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590902597878697984",
"parts": {
"symbol": "sit1145aqtk.kicad_sym",
"footprint": "sit1145aqtk.kicad_mod",
"model_3d": "sit1145aqtk-hero.glb",
"model_3d_plain": "sit1145aqtk-etched.glb",
"model_3d_step": "sit1145aqtk-etched.step",
"model_3d_step_plain": "sit1145aqtk.step",
"lbr": "sit1145aqtk.lbr"
},
"distributor_links": {
"lcsc": "C5382540"
},
"distributor_check": {
"checked_at": "2026-10-20T10:48:32Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": null,
"status": "no match"
},
"mouser": {
"pn": null,
"status": "no match"
}
},
"pins": [
{
"number": "1",
"name": "TXD",
"type": "input",
"description": "Transmitter data input from the MCU, referenced to VIO (-0.2 V to VIO+0.2 V); a dominant timeout disables the transmitter if held low too long."
},
{
"number": "2",
"name": "GND",
"type": "power_in",
"description": "Ground."
},
{
"number": "3",
"name": "VCC",
"type": "power_in",
"description": "5 V CAN bus supply, 4.5 V to 5.5 V recommended, absolute maximum -0.2 V to +6 V."
},
{
"number": "4",
"name": "RXD",
"type": "output",
"description": "Receiver data output to the MCU, referenced to VIO (-0.2 V to VIO+0.2 V)."
},
{
"number": "5",
"name": "VIO",
"type": "power_in",
"description": "I/O supply for the MCU-side interface, 2.85 V to 5.5 V, supporting 3.3 V/5 V MCUs."
},
{
"number": "6",
"name": "SDO",
"type": "output",
"description": "SPI data output, referenced to VIO (-0.2 V to VIO+0.2 V)."
},
{
"number": "7",
"name": "INH",
"type": "output",
"description": "Inhibit output switch that controls an external voltage regulator, rated -0.2 V to +40 V."
},
{
"number": "8",
"name": "SCK",
"type": "input",
"description": "SPI clock input, referenced to VIO (-0.2 V to VIO+0.2 V)."
},
{
"number": "9",
"name": "WAKE",
"type": "input",
"description": "Local wake-up input, rated -0.2 V to +40 V; connect to GND if local wake-up is unused."
},
{
"number": "10",
"name": "BAT",
"type": "power_in",
"description": "Battery supply input, 5.5 V to 28 V recommended, absolute maximum -0.2 V to +40 V."
},
{
"number": "11",
"name": "SDI",
"type": "input",
"description": "SPI data input, referenced to VIO (-0.2 V to VIO+0.2 V)."
},
{
"number": "12",
"name": "CANL",
"type": "bidirectional",
"description": "Low-level CAN bus input/output, rated -58 V to +58 V."
},
{
"number": "13",
"name": "CANH",
"type": "bidirectional",
"description": "High-level CAN bus input/output, rated -58 V to +58 V."
},
{
"number": "14",
"name": "SCSN",
"type": "input",
"description": "SPI chip select input (active low), referenced to VIO (-0.2 V to VIO+0.2 V)."
},
{
"number": "15",
"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-sonnet-5-5",
"primary_mode": "text+vision",
"consensus_model": "claude-opus-5-5",
"consensus": "agreed",
"guards": "pin_guards 0.1: passed",
"guard_notes": [
"extractor flagged: The DFN14 package drawing and pinout diagram show an exposed thermal pad, but the datasheet gives it; The pin function table appears only once, for the SOP14 pinout (page 3). The DFN14 pinout on page 2 ",
"exposed pad 15 added from the footprint",
"vision extraction: provenance cannot be text-verified; needs consensus"
],
"pages_sent": 12,
"cost_usd": 0.1647,
"at": "2026-10-20T10:48:14"
},
"datasheet": {
"url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590902597878697984",
"pages": 12,
"sha256": "c5eea4058af7465c",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 15,
"described": 15,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
{
"file": "sit1145aqtk.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
3,
4.4,
0.6
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "8079d62f5b9e1cd0308689c1e51508513555e4adea6121b173ad6c80909f9944",
"checked": "2026-10-20",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "sit1145aqtk-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
3,
4.4,
0.6
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "74516e6c596288924d6ebe5b80d9c1e948ac5a7fc858fdb09cdf8404bcd2a660",
"checked": "2026-10-20",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
},
"metadata": {
"specs": {
"Manufacturer": "SIT",
"Package": "DFN-14(3x4.5)",
"Category": "Interface",
"Pins": "15"
},
"characteristics": {
"version": 1,
"source": "datasheet",
"datasheet_sha256": "c5eea4058af7465cee394c7276459ad6f9ade5d942cd9c241f6831a6cf6636de",
"rows": [
{
"name": "电池电源电压",
"symbol": "BAT",
"kind": "recommended_operating",
"unit": "V",
"min": 5.5,
"typ": null,
"max": 28,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "供电电压",
"symbol": "VCC",
"kind": "recommended_operating",
"unit": "V",
"min": 4.5,
"typ": null,
"max": 5.5,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "MCU侧端口电压",
"symbol": "VIO",
"kind": "recommended_operating",
"unit": "V",
"min": 2.85,
"typ": null,
"max": 5.5,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "最大传输速率",
"symbol": "1/tbit",
"kind": "recommended_operating",
"unit": "Mbaud",
"min": null,
"typ": null,
"max": 5,
"conditions": "非归零码",
"source_page": 2,
"source": "datasheet"
},
{
"name": "CANH、CANL 输入输出电压",
"symbol": "Vcan",
"kind": "recommended_operating",
"unit": "V",
"min": -58,
"typ": null,
"max": 58,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "总线差分电压",
"symbol": "Vdiff",
"kind": "recommended_operating",
"unit": "V",
"min": 1.5,
"typ": null,
"max": 3,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "结温",
"symbol": "Tj",
"kind": "recommended_operating",
"unit": "℃",
"min": -40,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "电池电源电压",
"symbol": "BAT",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.2,
"typ": null,
"max": 40,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "总线电源电压",
"symbol": "VCC，VIO",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.2,
"typ": null,
"max": 6,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "控制引脚电压",
"symbol": "WAKE，INH",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.2,
"typ": null,
"max": 40,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "MCU侧端口 TXD，RXD，SDI，SDO，SCK，SCSN",
"symbol": "",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.2,
"typ": null,
"max": null,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "总线侧输入电压",
"symbol": "CANL，CANH",
"kind": "absolute_maximum",
"unit": "V",
"min": -58,
"typ": null,
"max": 58,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "存储工作温度范围",
"symbol": "",
"kind": "absolute_maximum",
"unit": "℃",
"min": -55,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "结温",
"symbol": "Tj",
"kind": "absolute_maximum",
"unit": "℃",
"min": -40,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "总线端接触放电",
"symbol": "VESD_IEC",
"kind": "absolute_maximum",
"unit": "kV",
"min": -6,
"typ": null,
"max": 6,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "总线端接 HBM",
"symbol": "VESD_HBM",
"kind": "absolute_maximum",
"unit": "kV",
"min": -8,
"typ": null,
"max": 8,
"conditions": "",
"source_page": 2,
"source": "datasheet"
}
]
}
},
"variants": [],
"sections": [
"hero",
"viewers",
"readme",
"breadcrumbs",
"info"
],
"discovery_triggers": [
"sit1145aqtk"
],
"discovery_pitch": "SIT1145AQTK (SIT) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
"author": {
"name": "Ray",
"email": "[email protected]"
},
"dependencies": {},
"hero": {
"type": "image",
"path": "docs/hero.png"
},
"files": [
"page.json",
"README.md",
"sit1145aqtk.kicad_sym",
"sit1145aqtk.kicad_mod",
"sit1145aqtk.glb",
"sit1145aqtk.step",
"sit1145aqtk.lbr",
"docs/hero.png",
"docs/sit1145aqtk-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"sit1145aqtk-hero.glb",
"sit1145aqtk-hero.overlay.json",
"sit1145aqtk-etched.glb"
],
"visibility": {
"public": true
}
}