component
SIT75179BDR
Public Made by Adomby adom
SIT RS-485/RS-422 ICs, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632633634635636637638639640641642643644645646647648649650651652653654655656657658659660661662663664665666667668669670671672673674675676677678679680681682683684685686687688689690691692693694695
{
"schema_version": 1,
"type": "component",
"slug": "sit75179bdr",
"title": "SIT75179BDR",
"brief": "SIT RS-485/RS-422 ICs, SOP-8. 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 ics",
"sit75179bdr",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "SIT75179BDR",
"manufacturer": "SIT",
"package": "SOP-8",
"pin_count": 8,
"category": "Interface ICs",
"subcategory": "RS-485/RS-422 ICs",
"datasheet": "https://datasheet.lcsc.com/datasheet/pdf/5bfd9242804ed485694b8afcf38446d4.pdf",
"parts": {
"symbol": "sit75179bdr.kicad_sym",
"footprint": "sit75179bdr.kicad_mod",
"model_3d": "sit75179bdr-hero.glb",
"model_3d_plain": "sit75179bdr-etched.glb",
"model_3d_step": "sit75179bdr-etched.step",
"model_3d_step_plain": "sit75179bdr.step",
"lbr": "sit75179bdr.lbr"
},
"distributor_links": {
"lcsc": "C712071"
},
"distributor_check": {
"checked_at": "2026-10-27T09:48:03Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": null,
"status": "quota"
},
"mouser": {
"pn": null,
"status": "quota"
}
},
"pins": [
{
"number": "1",
"name": "VCC",
"type": "power_in",
"description": "Power supply input, 4.5V ≤ VCC ≤ 5.5V."
},
{
"number": "2",
"name": "RO",
"type": "output",
"description": "Receiver output: high if A-B ≥ -10mV, low if A-B ≤ -200mV."
},
{
"number": "3",
"name": "DI",
"type": "input",
"description": "Driver input: low drives Y low and Z high, high drives Y high and Z low."
},
{
"number": "4",
"name": "GND",
"type": "power_in",
"description": "Ground."
},
{
"number": "5",
"name": "Y",
"type": "output",
"description": "Driver non-inverting output."
},
{
"number": "6",
"name": "Z",
"type": "output",
"description": "Driver inverting output."
},
{
"number": "7",
"name": "B",
"type": "input",
"description": "Receiver inverting input."
},
{
"number": "8",
"name": "A",
"type": "input",
"description": "Receiver non-inverting input."
}
],
"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",
"consensus_model": "claude-sonnet-5-5",
"consensus": "agreed",
"guards": "pin_guards 0.1: passed",
"guard_notes": [],
"pages_sent": 9,
"cost_usd": 0.0531,
"at": "2026-10-27T09:47:42"
},
"datasheet": {
"url": "https://datasheet.lcsc.com/datasheet/pdf/5bfd9242804ed485694b8afcf38446d4.pdf",
"pages": 9,
"sha256": "3dae4ebfa9efdde4",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 8,
"described": 8,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
{
"file": "sit75179bdr.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
6,
4.9,
1.75
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
"checked": "2026-10-27",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "sit75179bdr-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
6,
4.9,
1.75
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "8d86cfee4aae046f61fca2806eeb8f7c6cad44f2fb7c4ca8dad3f7249991684a",
"checked": "2026-10-27",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
},
"metadata": {
"specs": {
"Manufacturer": "SIT",
"Package": "SOP-8",
"Category": "Interface ICs",
"Pins": "8"
},
"characteristics": {
"version": 1,
"source": "datasheet",
"datasheet_sha256": "3dae4ebfa9efdde4ff99d429275a750f2102b950cecc7c5dc8378692eaddc376",
"rows": [
{
"name": "Supply voltage",
"symbol": "VCC",
"kind": "absolute_maximum",
"unit": "V",
"min": null,
"typ": null,
"max": 7,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Control port voltage (DI)",
"symbol": "DI",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": null,
"conditions": "-0.3 to VCC+0.3",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Bus input voltage A, B",
"symbol": "A, B",
"kind": "absolute_maximum",
"unit": "V",
"min": -8,
"typ": null,
"max": 13,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Receiver output voltage (RO)",
"symbol": "RO",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": null,
"conditions": "-0.3 to VCC+0.3",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Operating temperature range",
"symbol": "",
"kind": "absolute_maximum",
"unit": "°C",
"min": -40,
"typ": null,
"max": 125,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Storage temperature range",
"symbol": "",
"kind": "absolute_maximum",
"unit": "°C",
"min": -60,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Soldering temperature",
"symbol": "",
"kind": "absolute_maximum",
"unit": "°C",
"min": null,
"typ": null,
"max": 300,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Continuous power dissipation SOP8",
"symbol": "",
"kind": "absolute_maximum",
"unit": "mW",
"min": null,
"typ": null,
"max": 400,
"conditions": "SOP8",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Supply voltage",
"symbol": "VCC",
"kind": "recommended_operating",
"unit": "V",
"min": 4.5,
"typ": null,
"max": 5.5,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Driver differential output, no load",
"symbol": "VOD1",
"kind": "electrical",
"unit": "V",
"min": 5,
"typ": null,
"max": null,
"conditions": "no load",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Driver differential output",
"symbol": "VOD2",
"kind": "electrical",
"unit": "V",
"min": 1.5,
"typ": 2.3,
"max": null,
"conditions": "Fig 2, RL = 27 Ω",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Driver differential output",
"symbol": "VOD2",
"kind": "electrical",
"unit": "V",
"min": 2,
"typ": 2.8,
"max": null,
"conditions": "Fig 2, RL = 50 Ω",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Change in magnitude of output voltage",
"symbol": "ΔVOD",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": null,
"max": 0.2,
"conditions": "Fig 2, RL = 27 Ω",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Output common-mode voltage",
"symbol": "VOC",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": null,
"max": 3,
"conditions": "Fig 2, RL = 27 Ω",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Change in magnitude of common-mode output voltage",
"symbol": "ΔVOC",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": null,
"max": 0.2,
"conditions": "Fig 2, RL = 27 Ω",
"source_page": 3,
"source": "datasheet"
},
{
"name": "High-level input voltage",
"symbol": "VIH",
"kind": "electrical",
"unit": "V",
"min": 2,
"typ": null,
"max": null,
"conditions": "DI",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Low-level input voltage",
"symbol": "VIL",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": null,
"max": 0.8,
"conditions": "DI",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Logic input current",
"symbol": "IIN1",
"kind": "electrical",
"unit": "uA",
"min": -2,
"typ": null,
"max": 2,
"conditions": "DI",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Output short-circuit current, short to high",
"symbol": "IOSD1",
"kind": "electrical",
"unit": "mA",
"min": 35,
"typ": null,
"max": 250,
"conditions": "short to 0V~12V",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Output short-circuit current, short to low",
"symbol": "IOSD2",
"kind": "electrical",
"unit": "mA",
"min": -250,
"typ": null,
"max": -35,
"conditions": "short to -7V~0V",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Input current (A, B)",
"symbol": "IIN2",
"kind": "electrical",
"unit": "uA",
"min": null,
"typ": null,
"max": 125,
"conditions": "VCC=0 or 5V, VIN = 12V",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Input current (A, B)",
"symbol": "IIN2",
"kind": "electrical",
"unit": "uA",
"min": -100,
"typ": null,
"max": null,
"conditions": "VCC=0 or 5V, VIN = -7 V",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Positive-going input threshold voltage",
"symbol": "VIT+",
"kind": "electrical",
"unit": "mV",
"min": null,
"typ": null,
"max": -10,
"conditions": "-7V≦VCM≦12V",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Negative-going input threshold voltage",
"symbol": "VIT-",
"kind": "electrical",
"unit": "mV",
"min": -200,
"typ": null,
"max": null,
"conditions": "-7V≦VCM≦12V",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Input hysteresis voltage",
"symbol": "Vhys",
"kind": "electrical",
"unit": "mV",
"min": 10,
"typ": 30,
"max": null,
"conditions": "-7V≦VCM≦12V",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Low-level output voltage",
"symbol": "VOL",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": null,
"max": 0.4,
"conditions": "IOUT = +4mA, VID = -200 mV",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Three-state input leakage current",
"symbol": "IOZR",
"kind": "electrical",
"unit": "uA",
"min": -1,
"typ": null,
"max": 1,
"conditions": "0.4 V < VO < 2.4 V",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Receiver input resistance",
"symbol": "RIN",
"kind": "electrical",
"unit": "kΩ",
"min": 96,
"typ": null,
"max": null,
"conditions": "-7V≦VCM≦12V",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Receiver short-circuit current",
"symbol": "IOSR",
"kind": "electrical",
"unit": "mA",
"min": 7,
"typ": null,
"max": 95,
"conditions": "0 V≤VO≤VCC, printed ±7 to ±95",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Supply current",
"symbol": "ICC",
"kind": "electrical",
"unit": "uA",
"min": null,
"typ": 220,
"max": 400,
"conditions": "DI=0 or VCC",
"source_page": 4,
"source": "datasheet"
},
{
"name": "ESD HBM, A, B, Y, Z",
"symbol": "",
"kind": "electrical",
"unit": "KV",
"min": -15,
"typ": null,
"max": 15,
"conditions": "Human body model",
"source_page": 4,
"source": "datasheet"
},
{
"name": "ESD HBM, other pins",
"symbol": "",
"kind": "electrical",
"unit": "KV",
"min": -6,
"typ": null,
"max": 6,
"conditions": "Human body model",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Driver propagation delay low to high",
"symbol": "tDPLH",
"kind": "timing",
"unit": "ns",
"min": null,
"typ": 18,
"max": 42,
"conditions": "RDIFF = 54 Ω, CL1=CL2=100pF",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Driver propagation delay high to low",
"symbol": "tDPHL",
"kind": "timing",
"unit": "ns",
"min": null,
"typ": 18,
"max": 42,
"conditions": "RDIFF = 54 Ω, CL1=CL2=100pF",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Driver skew |tDPLH - tDPHL|",
"symbol": "tSKEW1",
"kind": "timing",
"unit": "ns",
"min": null,
"typ": 8,
"max": 10,
"conditions": "RDIFF = 54 Ω, CL1=CL2=100pF",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Driver rise/fall time",
"symbol": "tDR, tDF",
"kind": "timing",
"unit": "ns",
"min": null,
"typ": 30,
"max": null,
"conditions": "",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Receiver propagation delay low to high",
"symbol": "tRPLH",
"kind": "timing",
"unit": "ns",
"min": null,
"typ": 30,
"max": 100,
"conditions": "VID≥2.0V; rise and fall time VID≤15ns",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Receiver propagation delay high to low",
"symbol": "tRPHL",
"kind": "timing",
"unit": "ns",
"min": null,
"typ": 30,
"max": 100,
"conditions": "VID≥2.0V; rise and fall time VID≤15ns",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Receiver skew |tRPLH - tRPHL|",
"symbol": "tSKEW2",
"kind": "timing",
"unit": "ns",
"min": null,
"typ": 8,
"max": 10,
"conditions": "VID≥2.0V; rise and fall time VID≤15ns",
"source_page": 5,
"source": "datasheet"
}
]
}
},
"variants": [],
"sections": [
"hero",
"viewers",
"readme",
"breadcrumbs",
"info"
],
"discovery_triggers": [
"sit75179bdr"
],
"discovery_pitch": "SIT75179BDR (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",
"sit75179bdr.kicad_sym",
"sit75179bdr.kicad_mod",
"sit75179bdr.glb",
"sit75179bdr.step",
"sit75179bdr.lbr",
"docs/hero.png",
"docs/sit75179bdr-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"sit75179bdr-hero.glb",
"sit75179bdr-hero.overlay.json",
"sit75179bdr-etched.glb"
],
"visibility": {
"public": true
}
}