component
SN74HC4040DBR
Public Made by Adomby adom
Texas Instruments Counters, Dividers, SSOP-16-208mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
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"type": "component",
"slug": "sn74hc4040dbr",
"title": "SN74HC4040DBR",
"brief": "Texas Instruments Counters, Dividers, SSOP-16-208mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"version": "0.1.0",
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"component": {
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"manufacturer": "Texas Instruments",
"package": "SSOP-16-208mil",
"pin_count": 16,
"category": "Logic",
"subcategory": "Counters, Dividers",
"datasheet": "https://www.ti.com/cn/lit/gpn/sn54hc4040",
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"footprint": "sn74hc4040dbr.kicad_mod",
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"model_3d_step_plain": "sn74hc4040dbr.step",
"lbr": "sn74hc4040dbr.lbr"
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"distributor_links": {
"lcsc": "C2860162",
"digikey": "296-8323-2-ND",
"mouser": "595-SN74HC4040DBR"
},
"distributor_check": {
"checked_at": "2026-10-11T09:27:02Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "296-8323-2-ND",
"status": "found"
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"pn": "595-SN74HC4040DBR",
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},
"pins": [
{
"number": "1",
"name": "QL",
"type": "output",
"description": "Counter stage 12 output; counter advances on high-to-low CLK transition, drives up to 10 LSTTL loads, ±4 mA at 5 V."
},
{
"number": "2",
"name": "QF",
"type": "output",
"description": "Counter stage 6 output; drives up to 10 LSTTL loads, ±4 mA at 5 V."
},
{
"number": "3",
"name": "QE",
"type": "output",
"description": "Counter stage 5 output; drives up to 10 LSTTL loads, ±4 mA at 5 V."
},
{
"number": "4",
"name": "QG",
"type": "output",
"description": "Counter stage 7 output; drives up to 10 LSTTL loads, ±4 mA at 5 V."
},
{
"number": "5",
"name": "QD",
"type": "output",
"description": "Counter stage 4 output; drives up to 10 LSTTL loads, ±4 mA at 5 V."
},
{
"number": "6",
"name": "QC",
"type": "output",
"description": "Counter stage 3 output; drives up to 10 LSTTL loads, ±4 mA at 5 V."
},
{
"number": "7",
"name": "QB",
"type": "output",
"description": "Counter stage 2 output; drives up to 10 LSTTL loads, ±4 mA at 5 V."
},
{
"number": "8",
"name": "GND",
"type": "power_in",
"description": "Ground; continuous current through VCC or GND is limited to ±50 mA."
},
{
"number": "9",
"name": "QA",
"type": "output",
"description": "Counter stage 1 output (first stage, tpd from CLK typically 16 ns at 4.5 V); drives up to 10 LSTTL loads."
},
{
"number": "10",
"name": "CLK",
"type": "input",
"description": "Clock input; count advances on a high-to-low transition, max clock frequency 22 MHz at 4.5 V for SN74HC4040."
},
{
"number": "11",
"name": "CLR",
"type": "input",
"description": "Asynchronous clear; a high level resets the counter and sets all outputs low, minimum pulse width 18 ns at 4.5 V."
},
{
"number": "12",
"name": "QI",
"type": "output",
"description": "Counter stage 9 output; drives up to 10 LSTTL loads, ±4 mA at 5 V."
},
{
"number": "13",
"name": "QH",
"type": "output",
"description": "Counter stage 8 output; drives up to 10 LSTTL loads, ±4 mA at 5 V."
},
{
"number": "14",
"name": "QJ",
"type": "output",
"description": "Counter stage 10 output; drives up to 10 LSTTL loads, ±4 mA at 5 V."
},
{
"number": "15",
"name": "QK",
"type": "output",
"description": "Counter stage 11 output; drives up to 10 LSTTL loads, ±4 mA at 5 V."
},
{
"number": "16",
"name": "VCC",
"type": "power_in",
"description": "Supply voltage, 2 V to 6 V recommended (absolute max 7 V); bypass with a 0.1-µF capacitor close to the pin."
}
],
"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: Stage letters QA..QL are mapped to stage numbers 1..12 by alphabetical order. The datasheet text doe",
"vision extraction: provenance cannot be text-verified; needs consensus"
],
"pages_sent": 31,
"cost_usd": 0.4509,
"at": "2026-10-11T09:26:46"
},
"datasheet": {
"url": "https://www.ti.com/cn/lit/gpn/sn54hc4040",
"pages": 31,
"sha256": "864adadf9c12e530",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 16,
"described": 16,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
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"footprint": "viewers/footprint.html"
},
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"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
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"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "d0e11e46aeca5dbaa5c4bb538f3f4899761267cabdeba6486325ae9e979c03ef",
"checked": "2026-10-11",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
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"sha256": "61778cf7735c0c2028d13b335b702999802b6f8a786ea20509e2a16944a4f72f",
"checked": "2026-10-11",
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]
},
"metadata": {
"specs": {
"Manufacturer": "Texas Instruments",
"Package": "SSOP-16-208mil",
"Category": "Logic",
"Pins": "16"
}
},
"variants": [],
"sections": [
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"discovery_triggers": [
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],
"discovery_pitch": "SN74HC4040DBR (Texas Instruments) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
"author": {
"name": "Ray",
"email": "[email protected]"
},
"dependencies": {},
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