component
74HC123PW
Public Made by Adomby adom
Nexperia Monostable Multivibrators, TSSOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
Ray
pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left)
227ed6f
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523
{
"schema": "adom.pads/1",
"slug": "74hc123pw",
"footprint": "TSSOP-16_4.4x5mm_P0.65mm",
"generated_from": {
"footprint": "TSSOP-16_4.4x5mm_P0.65mm@sha256:fbac79fc5f310754",
"pins": "page.json:component.pins",
"overrides": null
},
"pin1": {
"pad": "1",
"at": [
-2.8625,
-2.275
],
"corner": "top-left",
"source": "silk-marker",
"derived_from": "TSSOP-16_4.4x5mm_P0.65mm@sha256:fbac79fc5f310754"
},
"pad_count": 16,
"symbol_pins": [
"1",
"10",
"11",
"12",
"13",
"14",
"15",
"16",
"2",
"3",
"4",
"5",
"6",
"7",
"8",
"9"
],
"paste_apertures": 0,
"issues": [],
"pads": [
{
"pad": "1",
"kind": "smd",
"shape": "roundrect",
"at": [
-2.8625,
-2.275
],
"rot": 0.0,
"size": [
1.475,
0.4
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "1",
"name": "1A",
"type": "input",
"description": "Negative-edge triggered input for monostable 1 (active-LOW trigger, Schmitt-trigger input).",
"is_pin1": true,
"source": {
"geometry": "TSSOP-16_4.4x5mm_P0.65mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "2",
"kind": "smd",
"shape": "roundrect",
"at": [
-2.8625,
-1.625
],
"rot": 0.0,
"size": [
1.475,
0.4
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "2",
"name": "1B",
"type": "input",
"description": "Positive-edge triggered input for monostable 1 (Schmitt-trigger input).",
"is_pin1": false,
"source": {
"geometry": "TSSOP-16_4.4x5mm_P0.65mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "3",
"kind": "smd",
"shape": "roundrect",
"at": [
-2.8625,
-0.975
],
"rot": 0.0,
"size": [
1.475,
0.4
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "3",
"name": "1RD",
"type": "input",
"description": "Direct reset input for monostable 1 - active LOW terminates the output pulse; also acts as a positive-edge triggered input.",
"is_pin1": false,
"source": {
"geometry": "TSSOP-16_4.4x5mm_P0.65mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "4",
"kind": "smd",
"shape": "roundrect",
"at": [
-2.8625,
-0.325
],
"rot": 0.0,
"size": [
1.475,
0.4
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "4",
"name": "1Q_N",
"type": "output",
"description": "Active-LOW (inverted) output for monostable 1. Goes LOW during the programmed output pulse.",
"is_pin1": false,
"source": {
"geometry": "TSSOP-16_4.4x5mm_P0.65mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "5",
"kind": "smd",
"shape": "roundrect",
"at": [
-2.8625,
0.325
],
"rot": 0.0,
"size": [
1.475,
0.4
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "5",
"name": "2Q",
"type": "output",
"description": "Active-HIGH output for monostable 2. Goes HIGH during the programmed output pulse.",
"is_pin1": false,
"source": {
"geometry": "TSSOP-16_4.4x5mm_P0.65mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "6",
"kind": "smd",
"shape": "roundrect",
"at": [
-2.8625,
0.975
],
"rot": 0.0,
"size": [
1.475,
0.4
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "6",
"name": "2CEXT",
"type": "passive",
"description": "External timing capacitor connection for monostable 2. Together with 2REXT/CEXT sets the output pulse width.",
"is_pin1": false,
"source": {
"geometry": "TSSOP-16_4.4x5mm_P0.65mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "7",
"kind": "smd",
"shape": "roundrect",
"at": [
-2.8625,
1.625
],
"rot": 0.0,
"size": [
1.475,
0.4
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "7",
"name": "2REXT/CEXT",
"type": "passive",
"description": "External timing resistor and capacitor connection for monostable 2. REXT ties to VCC through the timing resistor; CEXT ties between this pin and 2CEXT.",
"is_pin1": false,
"source": {
"geometry": "TSSOP-16_4.4x5mm_P0.65mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "8",
"kind": "smd",
"shape": "roundrect",
"at": [
-2.8625,
2.275
],
"rot": 0.0,
"size": [
1.475,
0.4
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "8",
"name": "GND",
"type": "power_in",
"description": "Ground reference (0 V).",
"is_pin1": false,
"source": {
"geometry": "TSSOP-16_4.4x5mm_P0.65mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "9",
"kind": "smd",
"shape": "roundrect",
"at": [
2.8625,
2.275
],
"rot": 0.0,
"size": [
1.475,
0.4
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "9",
"name": "2A",
"type": "input",
"description": "Negative-edge triggered input for monostable 2 (active-LOW trigger, Schmitt-trigger input).",
"is_pin1": false,
"source": {
"geometry": "TSSOP-16_4.4x5mm_P0.65mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "10",
"kind": "smd",
"shape": "roundrect",
"at": [
2.8625,
1.625
],
"rot": 0.0,
"size": [
1.475,
0.4
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "10",
"name": "2B",
"type": "input",
"description": "Positive-edge triggered input for monostable 2 (Schmitt-trigger input).",
"is_pin1": false,
"source": {
"geometry": "TSSOP-16_4.4x5mm_P0.65mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "11",
"kind": "smd",
"shape": "roundrect",
"at": [
2.8625,
0.975
],
"rot": 0.0,
"size": [
1.475,
0.4
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "11",
"name": "2RD",
"type": "input",
"description": "Direct reset input for monostable 2 - active LOW terminates the output pulse; also acts as a positive-edge triggered input.",
"is_pin1": false,
"source": {
"geometry": "TSSOP-16_4.4x5mm_P0.65mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "12",
"kind": "smd",
"shape": "roundrect",
"at": [
2.8625,
0.325
],
"rot": 0.0,
"size": [
1.475,
0.4
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "12",
"name": "2Q_N",
"type": "output",
"description": "Active-LOW (inverted) output for monostable 2. Goes LOW during the programmed output pulse.",
"is_pin1": false,
"source": {
"geometry": "TSSOP-16_4.4x5mm_P0.65mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "13",
"kind": "smd",
"shape": "roundrect",
"at": [
2.8625,
-0.325
],
"rot": 0.0,
"size": [
1.475,
0.4
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "13",
"name": "1Q",
"type": "output",
"description": "Active-HIGH output for monostable 1. Goes HIGH during the programmed output pulse.",
"is_pin1": false,
"source": {
"geometry": "TSSOP-16_4.4x5mm_P0.65mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "14",
"kind": "smd",
"shape": "roundrect",
"at": [
2.8625,
-0.975
],
"rot": 0.0,
"size": [
1.475,
0.4
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "14",
"name": "1CEXT",
"type": "passive",
"description": "External timing capacitor connection for monostable 1. Together with 1REXT/CEXT sets the output pulse width.",
"is_pin1": false,
"source": {
"geometry": "TSSOP-16_4.4x5mm_P0.65mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "15",
"kind": "smd",
"shape": "roundrect",
"at": [
2.8625,
-1.625
],
"rot": 0.0,
"size": [
1.475,
0.4
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "15",
"name": "1REXT/CEXT",
"type": "passive",
"description": "External timing resistor and capacitor connection for monostable 1. REXT ties to VCC through the timing resistor; CEXT ties between this pin and 1CEXT.",
"is_pin1": false,
"source": {
"geometry": "TSSOP-16_4.4x5mm_P0.65mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
},
{
"pad": "16",
"kind": "smd",
"shape": "roundrect",
"at": [
2.8625,
-2.275
],
"rot": 0.0,
"size": [
1.475,
0.4
],
"layers": [
"F.Cu",
"F.Mask",
"F.Paste"
],
"thermal": false,
"pin": "16",
"name": "VCC",
"type": "power_in",
"description": "Positive supply voltage. Operating range 2.0 V to 6.0 V (74HC123) or 4.5 V to 5.5 V (74HCT123).",
"is_pin1": false,
"source": {
"geometry": "TSSOP-16_4.4x5mm_P0.65mm.kicad_mod",
"meaning": "page.json:component.pins",
"correspondence": "kicad: symbol pin number == pad name"
}
}
]
}