component
74HC4520PW
Public Made by Adomby adom
Nexperia Counters, Dividers, TSSOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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"title": "74HC4520PW",
"brief": "Nexperia Counters, Dividers, TSSOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
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"package": "TSSOP-16",
"pin_count": 16,
"category": "Logic",
"subcategory": "Counters, Dividers",
"datasheet": "https://assets.nexperia.com/documents/data-sheet/74HC4520PW.pdf",
"parts": {
"symbol": "74hc4520pw.kicad_sym",
"footprint": "74hc4520pw.kicad_mod",
"model_3d": "74hc4520pw-hero.glb",
"model_3d_plain": "74hc4520pw-etched.glb",
"model_3d_step": "74hc4520pw-etched.step",
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"lbr": "74hc4520pw.lbr"
},
"distributor_links": {
"lcsc": "C547072",
"mouser": "771-74HC4520PW"
},
"distributor_check": {
"checked_at": "2026-10-18T05:21:29Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": null,
"status": "no match"
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"pn": "771-74HC4520PW",
"status": "found",
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"pins": [
{
"number": "1",
"name": "1CP0",
"type": "input",
"description": "Clock input, LOW-to-HIGH edge-triggered; counter 1 advances on this rising edge when 1CP1 is HIGH."
},
{
"number": "2",
"name": "1CP1",
"type": "input",
"description": "Clock input, HIGH-to-LOW edge-triggered; counter 1 advances on this falling edge when 1CP0 is LOW."
},
{
"number": "3",
"name": "1Q0",
"type": "output",
"description": "Buffered output of bit 0 of counter 1, forced LOW by an active 1MR."
},
{
"number": "4",
"name": "1Q1",
"type": "output",
"description": "Buffered output of bit 1 of counter 1, forced LOW by an active 1MR."
},
{
"number": "5",
"name": "1Q2",
"type": "output",
"description": "Buffered output of bit 2 of counter 1, forced LOW by an active 1MR."
},
{
"number": "6",
"name": "1Q3",
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"description": "Buffered output of bit 3 of counter 1, forced LOW by an active 1MR."
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{
"number": "7",
"name": "1MR",
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"description": "Asynchronous master reset for counter 1, active HIGH; a HIGH forces 1Q0 to 1Q3 LOW independent of the clock inputs."
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{
"number": "8",
"name": "GND",
"type": "power_in",
"description": "Ground (0 V) reference for all voltages."
},
{
"number": "9",
"name": "2CP0",
"type": "input",
"description": "Clock input, LOW-to-HIGH edge-triggered; counter 2 advances on this rising edge when 2CP1 is HIGH."
},
{
"number": "10",
"name": "2CP1",
"type": "input",
"description": "Clock input, HIGH-to-LOW edge-triggered; counter 2 advances on this falling edge when 2CP0 is LOW."
},
{
"number": "11",
"name": "2Q0",
"type": "output",
"description": "Buffered output of bit 0 of counter 2, forced LOW by an active 2MR."
},
{
"number": "12",
"name": "2Q1",
"type": "output",
"description": "Buffered output of bit 1 of counter 2, forced LOW by an active 2MR."
},
{
"number": "13",
"name": "2Q2",
"type": "output",
"description": "Buffered output of bit 2 of counter 2, forced LOW by an active 2MR."
},
{
"number": "14",
"name": "2Q3",
"type": "output",
"description": "Buffered output of bit 3 of counter 2, forced LOW by an active 2MR."
},
{
"number": "15",
"name": "2MR",
"type": "input",
"description": "Asynchronous master reset for counter 2, active HIGH; a HIGH forces 2Q0 to 2Q3 LOW independent of the clock inputs."
},
{
"number": "16",
"name": "VCC",
"type": "power_in",
"description": "Supply voltage; recommended 2.0 V to 6.0 V for 74HC4520 and 4.5 V to 5.5 V for 74HCT4520."
}
],
"provenance": {
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"primary_model": "claude-haiku-5-5",
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"consensus_model": "claude-sonnet-5-5",
"consensus": "agreed",
"guards": "pin_guards 0.1: passed",
"guard_notes": [
"extractor flagged: Pin numbers were taken from the text layout of Fig. 5 (SOT403-1 TSSOP16), which is a drawing; the la; Pin descriptions are paraphrased from Table 2 and the Section 1 functional text; the datasheet gives"
],
"pages_sent": 14,
"cost_usd": 0.0714,
"at": "2026-10-18T05:16:02"
},
"datasheet": {
"url": "https://assets.nexperia.com/documents/data-sheet/74HC4520PW.pdf",
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"sha256": "2d8a801dc7d6b501",
"source_tier": "mfr"
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"cad": "KiCad official (CC-BY-SA 4.0)",
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"metadata": {
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"Package": "TSSOP-16",
"Category": "Logic",
"Pins": "16"
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"characteristics": {
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"unit": "V",
"min": -0.5,
"typ": null,
"max": 7,
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"source_page": 4,
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{
"name": "Input clamping current",
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"conditions": "VI < -0.5 V or VI > VCC + 0.5 V",
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{
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{
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{
"name": "Supply current",
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"min": null,
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{
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{
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{
"name": "Supply voltage (74HC4520)",
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"min": 2,
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"name": "Input voltage",
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{
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{
"name": "Input transition rise and fall rate",
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"source": "datasheet"
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{
"name": "Input transition rise and fall rate",
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"name": "HIGH-level input voltage",
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{
"name": "LOW-level input voltage",
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"conditions": "VCC = 2.0 V; min/max over -40 °C to +125 °C",
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{
"name": "LOW-level input voltage",
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{
"name": "LOW-level input voltage",
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{
"name": "HIGH-level output voltage",
"symbol": "VOH",
"kind": "electrical",
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"min": 1.9,
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"conditions": "VI = VIH or VIL; IO = -20 μA; VCC = 2.0 V; min over -40 °C to +125 °C",
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{
"name": "HIGH-level output voltage",
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{
"name": "HIGH-level output voltage",
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{
"name": "HIGH-level output voltage",
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"conditions": "VI = VIH or VIL; IO = -4.0; VCC = 4.5 V; min over -40 °C to +125 °C",
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"source": "datasheet"
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{
"name": "HIGH-level output voltage",
"symbol": "VOH",
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"min": 5.2,
"typ": 5.81,
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"conditions": "VI = VIH or VIL; IO = -5.2; VCC = 6.0 V; min over -40 °C to +125 °C",
"source_page": 5,
"source": "datasheet"
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{
"name": "LOW-level output voltage",
"symbol": "VOL",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": 0,
"max": 0.1,
"conditions": "VI = VIH or VIL; IO = 20 μA; VCC = 2.0 V; max over -40 °C to +125 °C",
"source_page": 5,
"source": "datasheet"
},
{
"name": "LOW-level output voltage",
"symbol": "VOL",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": 0.15,
"max": 0.4,
"conditions": "VI = VIH or VIL; IO = 4.0 mA; VCC = 4.5 V; max over -40 °C to +125 °C",
"source_page": 5,
"source": "datasheet"
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{
"name": "LOW-level output voltage",
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"kind": "electrical",
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"conditions": "VI = VIH or VIL; IO = 5.2 mA; VCC = 6.0 V; max over -40 °C to +125 °C",
"source_page": 5,
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{
"name": "Input leakage current",
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"kind": "electrical",
"unit": "μA",
"min": -1,
"typ": null,
"max": 1,
"conditions": "VI = VCC or GND; VCC = 6.0 V; -40 °C to +125 °C",
"source_page": 5,
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{
"name": "Supply current",
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{
"name": "Propagation delay nCP0 to nQn",
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"conditions": "VCC = 2.0 V; CL = 50 pF; max over -40 °C to +125 °C",
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{
"name": "Propagation delay nCP0 to nQn",
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"conditions": "VCC = 4.5 V; CL = 50 pF; max over -40 °C to +125 °C",
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{
"name": "Propagation delay nCP0 to nQn",
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"conditions": "VCC = 6.0 V; CL = 50 pF; max over -40 °C to +125 °C",
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{
"name": "Propagation delay nCP1 to nQn",
"symbol": "tpd",
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"typ": 77,
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"conditions": "VCC = 2.0 V; CL = 50 pF; max over -40 °C to +125 °C",
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"name": "Propagation delay nCP1 to nQn",
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{
"name": "Propagation delay nCP1 to nQn",
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"conditions": "VCC = 6.0 V; CL = 50 pF; max over -40 °C to +125 °C",
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{
"name": "HIGH to LOW propagation delay nMR to nQn",
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"conditions": "VCC = 2.0 V; CL = 50 pF; max over -40 °C to +125 °C",
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"source": "datasheet"
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{
"name": "HIGH to LOW propagation delay nMR to nQn",
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"min": null,
"typ": 16,
"max": 45,
"conditions": "VCC = 4.5 V; CL = 50 pF; max over -40 °C to +125 °C",
"source_page": 6,
"source": "datasheet"
},
{
"name": "HIGH to LOW propagation delay nMR to nQn",
"symbol": "tPHL",
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