component
MC74HCT595ADTG
Public Made by Adomby adom
onsemi Shifting Register, TSSOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"slug": "mc74hct595adtg",
"version": "0.1.0",
"type": "component",
"description": "onsemi Shifting Register, TSSOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"tags": [
"component",
"logic ics",
"mc74hct595adtg",
"factory-2.0.0",
"extractor-text"
],
"dependencies": {},
"hero": {
"type": "image",
"path": "docs/hero.png"
},
"files": [
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"README.md",
"mc74hct595adtg.kicad_sym",
"mc74hct595adtg.kicad_mod",
"mc74hct595adtg.glb",
"mc74hct595adtg.step",
"mc74hct595adtg.lbr",
"docs/hero.png",
"docs/mc74hct595adtg-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"mc74hct595adtg-hero.glb",
"mc74hct595adtg-hero.overlay.json",
"mc74hct595adtg-etched.glb"
],
"component": {
"mpn": "MC74HCT595ADTG",
"manufacturer": "onsemi",
"package": "TSSOP-16",
"pin_count": 16,
"category": "Logic ICs",
"subcategory": "Shifting Register",
"datasheet": "https://www.onsemi.com/pdf/datasheet/mc74hct595adt-d.pdf",
"parts": {
"symbol": "mc74hct595adtg.kicad_sym",
"footprint": "mc74hct595adtg.kicad_mod",
"model_3d": "mc74hct595adtg-hero.glb",
"model_3d_plain": "mc74hct595adtg-etched.glb",
"model_3d_step": "mc74hct595adtg-etched.step",
"model_3d_step_plain": "mc74hct595adtg.step",
"lbr": "mc74hct595adtg.lbr"
},
"distributor_links": {
"lcsc": "C897619",
"digikey": "MC74HCT595ADTGOS-ND",
"mouser": "863-MC74HCT595ADTG"
},
"distributor_check": {
"checked_at": "2026-10-30T18:34:59Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "MC74HCT595ADTGOS-ND",
"status": "found",
"lifecycle": "Active"
},
"mouser": {
"pn": "863-MC74HCT595ADTG",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "QB",
"type": "tri_state",
"description": "Noninverted, 3-state, latch output QB; it goes to high impedance when Output Enable is high."
},
{
"number": "2",
"name": "QC",
"type": "tri_state",
"description": "Noninverted, 3-state, latch output QC; it goes to high impedance when Output Enable is high."
},
{
"number": "3",
"name": "QD",
"type": "tri_state",
"description": "Noninverted, 3-state, latch output QD; it goes to high impedance when Output Enable is high."
},
{
"number": "4",
"name": "QE",
"type": "tri_state",
"description": "Noninverted, 3-state, latch output QE; it goes to high impedance when Output Enable is high."
},
{
"number": "5",
"name": "QF",
"type": "tri_state",
"description": "Noninverted, 3-state, latch output QF; it goes to high impedance when Output Enable is high."
},
{
"number": "6",
"name": "QG",
"type": "tri_state",
"description": "Noninverted, 3-state, latch output QG; it goes to high impedance when Output Enable is high."
},
{
"number": "7",
"name": "QH",
"type": "tri_state",
"description": "Noninverted, 3-state, latch output QH; it goes to high impedance when Output Enable is high."
},
{
"number": "8",
"name": "GND",
"type": "power_in",
"description": "Ground pin (GND = pin 8); all DC voltages are referenced to GND and Vin and Vout must stay between GND and VCC."
},
{
"number": "9",
"name": "SQH",
"type": "output",
"description": "Noninverted serial data output from the eighth stage of the 8-bit shift register; this output has no three-state capability."
},
{
"number": "10",
"name": "RESET",
"type": "input",
"description": "Active-low, asynchronous reset of the shift register only; a low resets the shift register and does not affect the 8-bit latch."
},
{
"number": "11",
"name": "SHIFT CLOCK",
"type": "input",
"description": "Shift register clock; a low-to-high transition shifts the data at the Serial Input pin into the 8-bit shift register."
},
{
"number": "12",
"name": "LATCH CLOCK",
"type": "input",
"description": "Storage latch clock; a low-to-high transition latches the shift register data into the output latch."
},
{
"number": "13",
"name": "OUTPUT ENABLE",
"type": "input",
"description": "Active-low output enable; a low lets latch data appear on QA-QH, and a high forces QA-QH into the high-impedance state."
},
{
"number": "14",
"name": "A",
"type": "input",
"description": "Serial data input; the data on this pin is shifted into the 8-bit serial shift register."
},
{
"number": "15",
"name": "QA",
"type": "tri_state",
"description": "Noninverted, 3-state, latch output QA; it goes to high impedance when Output Enable is high."
},
{
"number": "16",
"name": "VCC",
"type": "power_in",
"description": "Positive supply (VCC = pin 16); the recommended operating range is 4.5 to 5.5 V referenced to GND."
}
],
"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 datasheet lists the outputs as QA-QH on pins 15, 1, 2, 3, 4, 5, 6, 7 in that order, so QB-QH are; GND (pin 8) and VCC (pin 16) come from the logic diagram label on page 2 and were not confirmed agai; The pin assignment figure is shared by the SOIC-16 and TSSOP-16 variants; the datasheet does not giv"
],
"pages_sent": 12,
"cost_usd": 0.0782,
"at": "2026-10-30T18:34:46"
},
"datasheet": {
"url": "https://www.onsemi.com/pdf/datasheet/mc74hct595adt-d.pdf",
"pages": 12,
"sha256": "ebb8ded30ddb2e25",
"source_tier": "mfr"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 16,
"described": 16,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
{
"file": "mc74hct595adtg.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
6.4,
5.0,
1.1
],
"zmin_mm": -0.0,
"centre_offset_mm": 0.0,
"footprint_binding": "identity",
"sha256": "6ad5e98224d02a427d9a6b929a28dbc158b9925fba5adec12db05079f1016948",
"checked": "2026-10-30",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "mc74hct595adtg-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
6.4,
5.0,
1.1
],
"zmin_mm": -0.0,
"centre_offset_mm": 0.0,
"footprint_binding": "identity",
"sha256": "2126c5df982a812ecb4b22cd390b9176da185e8049e45bb5b4d6f44489d18812",
"checked": "2026-10-30",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
],
"package_dims": {
"package_code": "TSSOP-16 (CASE 948F)",
"source_page": 11,
"D": {
"nom_mm": 5.0,
"range_mm": [
4.9,
5.1
]
},
"E1": {
"nom_mm": 4.4,
"range_mm": [
4.3,
4.5
]
},
"E": {
"nom_mm": 6.4,
"range_mm": [
null,
null
]
},
"e": {
"nom_mm": 0.65,
"range_mm": [
null,
null
]
},
"A": {
"nom_mm": 1.2,
"range_mm": [
null,
1.2
]
},
"source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
"model_check": {
"file": "mc74hct595adtg.step",
"verdict": "PASS",
"reasons": [
"height and body within the datasheet's package drawing"
],
"by": "factory/package_fit.py"
}
}
}
}