component
74LVC257AD
Public Made by Adomby adom
Nexperia Signal Switches / Encoders & Decoders / Multiplexers, SOIC-16. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
← Commit history
pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left)
2 files changed
+507−1
package.json+2−1@@ -24,6 +24,7 @@ "docs/hero.png", "docs/74lvc257ad-datasheet.pdf", "viewers/symbol.html",- "viewers/footprint.html"+ "viewers/footprint.html",+ "pads.json" ] }
pads.jsonadded+505@@ -0,0 +1,505 @@+{+ "schema": "adom.pads/1",+ "slug": "74lvc257ad",+ "footprint": "SOIC-16_3.9x9.9mm_P1.27mm",+ "generated_from": {+ "footprint": "SOIC-16_3.9x9.9mm_P1.27mm@sha256:f9b5075740f7816c",+ "pins": "page.json:component.pins",+ "overrides": null+ },+ "pin1": {+ "pad": "1",+ "at": [+ -2.475,+ -4.445+ ],+ "corner": "top-left",+ "source": "silk-marker",+ "derived_from": "SOIC-16_3.9x9.9mm_P1.27mm@sha256:f9b5075740f7816c"+ },+ "pad_count": 16,+ "paste_apertures": 0,+ "issues": [],+ "pads": [+ {+ "pad": "1",+ "kind": "smd",+ "shape": "roundrect",+ "at": [+ -2.475,+ -4.445+ ],+ "rot": 0.0,+ "size": [+ 1.95,+ 0.6+ ],+ "layers": [+ "F.Cu",+ "F.Mask",+ "F.Paste"+ ],+ "thermal": false,+ "pin": "1",+ "name": "S",+ "type": "input",+ "description": "Common data select input. LOW selects the nI0 inputs, HIGH selects the nI1 inputs, routed to the respective nY outputs. Schmitt-trigger CMOS input, 5.5 V tolerant.",+ "is_pin1": true,+ "source": {+ "geometry": "SOIC-16_3.9x9.9mm_P1.27mm.kicad_mod",+ "meaning": "page.json:component.pins",+ "correspondence": "kicad: symbol pin number == pad name"+ }+ },+ {+ "pad": "2",+ "kind": "smd",+ "shape": "roundrect",+ "at": [+ -2.475,+ -3.175+ ],+ "rot": 0.0,+ "size": [+ 1.95,+ 0.6+ ],+ "layers": [+ "F.Cu",+ "F.Mask",+ "F.Paste"+ ],+ "thermal": false,+ "pin": "2",+ "name": "1I0",+ "type": "input",+ "description": "Channel 1 data input from source 0. Routed to output 1Y when S is LOW and /OE is LOW. Schmitt-trigger CMOS input, 5.5 V tolerant.",+ "is_pin1": false,+ "source": {+ "geometry": "SOIC-16_3.9x9.9mm_P1.27mm.kicad_mod",+ "meaning": "page.json:component.pins",+ "correspondence": "kicad: symbol pin number == pad name"+ }+ },+ {+ "pad": "3",+ "kind": "smd",+ "shape": "roundrect",+ "at": [+ -2.475,+ -1.905+ ],+ "rot": 0.0,+ "size": [+ 1.95,+ 0.6+ ],+ "layers": [+ "F.Cu",+ "F.Mask",+ "F.Paste"+ ],+ "thermal": false,+ "pin": "3",+ "name": "1I1",+ "type": "input",+ "description": "Channel 1 data input from source 1. Routed to output 1Y when S is HIGH and /OE is LOW. Schmitt-trigger CMOS input, 5.5 V tolerant.",+ "is_pin1": false,+ "source": {+ "geometry": "SOIC-16_3.9x9.9mm_P1.27mm.kicad_mod",+ "meaning": "page.json:component.pins",+ "correspondence": "kicad: symbol pin number == pad name"+ }+ },+ {+ "pad": "4",+ "kind": "smd",+ "shape": "roundrect",+ "at": [+ -2.475,+ -0.635+ ],+ "rot": 0.0,+ "size": [+ 1.95,+ 0.6+ ],+ "layers": [+ "F.Cu",+ "F.Mask",+ "F.Paste"+ ],+ "thermal": false,+ "pin": "4",+ "name": "1Y",+ "type": "tri_state",+ "description": "Channel 1 3-state multiplexer output. Drives either 1I0 or 1I1 according to S; high-impedance when /OE is HIGH. Rated for 50 Ω transmission-line drive at 85 °C.",+ "is_pin1": false,+ "source": {+ "geometry": "SOIC-16_3.9x9.9mm_P1.27mm.kicad_mod",+ "meaning": "page.json:component.pins",+ "correspondence": "kicad: symbol pin number == pad name"+ }+ },+ {+ "pad": "5",+ "kind": "smd",+ "shape": "roundrect",+ "at": [+ -2.475,+ 0.635+ ],+ "rot": 0.0,+ "size": [+ 1.95,+ 0.6+ ],+ "layers": [+ "F.Cu",+ "F.Mask",+ "F.Paste"+ ],+ "thermal": false,+ "pin": "5",+ "name": "2I0",+ "type": "input",+ "description": "Channel 2 data input from source 0. Routed to output 2Y when S is LOW and /OE is LOW. Schmitt-trigger CMOS input, 5.5 V tolerant.",+ "is_pin1": false,+ "source": {+ "geometry": "SOIC-16_3.9x9.9mm_P1.27mm.kicad_mod",+ "meaning": "page.json:component.pins",+ "correspondence": "kicad: symbol pin number == pad name"+ }+ },+ {+ "pad": "6",+ "kind": "smd",+ "shape": "roundrect",+ "at": [+ -2.475,+ 1.905+ ],+ "rot": 0.0,+ "size": [+ 1.95,+ 0.6+ ],+ "layers": [+ "F.Cu",+ "F.Mask",+ "F.Paste"+ ],+ "thermal": false,+ "pin": "6",+ "name": "2I1",+ "type": "input",+ "description": "Channel 2 data input from source 1. Routed to output 2Y when S is HIGH and /OE is LOW. Schmitt-trigger CMOS input, 5.5 V tolerant.",+ "is_pin1": false,+ "source": {+ "geometry": "SOIC-16_3.9x9.9mm_P1.27mm.kicad_mod",+ "meaning": "page.json:component.pins",+ "correspondence": "kicad: symbol pin number == pad name"+ }+ },+ {+ "pad": "7",+ "kind": "smd",+ "shape": "roundrect",+ "at": [+ -2.475,+ 3.175+ ],+ "rot": 0.0,+ "size": [+ 1.95,+ 0.6+ ],+ "layers": [+ "F.Cu",+ "F.Mask",+ "F.Paste"+ ],+ "thermal": false,+ "pin": "7",+ "name": "2Y",+ "type": "tri_state",+ "description": "Channel 2 3-state multiplexer output. Drives either 2I0 or 2I1 according to S; high-impedance when /OE is HIGH. Rated for 50 Ω transmission-line drive at 85 °C.",+ "is_pin1": false,+ "source": {+ "geometry": "SOIC-16_3.9x9.9mm_P1.27mm.kicad_mod",+ "meaning": "page.json:component.pins",+ "correspondence": "kicad: symbol pin number == pad name"+ }+ },+ {+ "pad": "8",+ "kind": "smd",+ "shape": "roundrect",+ "at": [+ -2.475,+ 4.445+ ],+ "rot": 0.0,+ "size": [+ 1.95,+ 0.6+ ],+ "layers": [+ "F.Cu",+ "F.Mask",+ "F.Paste"+ ],+ "thermal": false,+ "pin": "8",+ "name": "GND",+ "type": "power_in",+ "description": "Ground reference (0 V). Connect to system ground.",+ "is_pin1": false,+ "source": {+ "geometry": "SOIC-16_3.9x9.9mm_P1.27mm.kicad_mod",+ "meaning": "page.json:component.pins",+ "correspondence": "kicad: symbol pin number == pad name"+ }+ },+ {+ "pad": "9",+ "kind": "smd",+ "shape": "roundrect",+ "at": [+ 2.475,+ 4.445+ ],+ "rot": 0.0,+ "size": [+ 1.95,+ 0.6+ ],+ "layers": [+ "F.Cu",+ "F.Mask",+ "F.Paste"+ ],+ "thermal": false,+ "pin": "9",+ "name": "3Y",+ "type": "tri_state",+ "description": "Channel 3 3-state multiplexer output. Drives either 3I0 or 3I1 according to S; high-impedance when /OE is HIGH. Rated for 50 Ω transmission-line drive at 85 °C.",+ "is_pin1": false,+ "source": {+ "geometry": "SOIC-16_3.9x9.9mm_P1.27mm.kicad_mod",+ "meaning": "page.json:component.pins",+ "correspondence": "kicad: symbol pin number == pad name"+ }+ },+ {+ "pad": "10",+ "kind": "smd",+ "shape": "roundrect",+ "at": [+ 2.475,+ 3.175+ ],+ "rot": 0.0,+ "size": [+ 1.95,+ 0.6+ ],+ "layers": [+ "F.Cu",+ "F.Mask",+ "F.Paste"+ ],+ "thermal": false,+ "pin": "10",+ "name": "3I1",+ "type": "input",+ "description": "Channel 3 data input from source 1. Routed to output 3Y when S is HIGH and /OE is LOW. Schmitt-trigger CMOS input, 5.5 V tolerant.",+ "is_pin1": false,+ "source": {+ "geometry": "SOIC-16_3.9x9.9mm_P1.27mm.kicad_mod",+ "meaning": "page.json:component.pins",+ "correspondence": "kicad: symbol pin number == pad name"+ }+ },+ {+ "pad": "11",+ "kind": "smd",+ "shape": "roundrect",+ "at": [+ 2.475,+ 1.905+ ],+ "rot": 0.0,+ "size": [+ 1.95,+ 0.6+ ],+ "layers": [+ "F.Cu",+ "F.Mask",+ "F.Paste"+ ],+ "thermal": false,+ "pin": "11",+ "name": "3I0",+ "type": "input",+ "description": "Channel 3 data input from source 0. Routed to output 3Y when S is LOW and /OE is LOW. Schmitt-trigger CMOS input, 5.5 V tolerant.",+ "is_pin1": false,+ "source": {+ "geometry": "SOIC-16_3.9x9.9mm_P1.27mm.kicad_mod",+ "meaning": "page.json:component.pins",+ "correspondence": "kicad: symbol pin number == pad name"+ }+ },+ {+ "pad": "12",+ "kind": "smd",+ "shape": "roundrect",+ "at": [+ 2.475,+ 0.635+ ],+ "rot": 0.0,+ "size": [+ 1.95,+ 0.6+ ],+ "layers": [+ "F.Cu",+ "F.Mask",+ "F.Paste"+ ],+ "thermal": false,+ "pin": "12",+ "name": "4Y",+ "type": "tri_state",+ "description": "Channel 4 3-state multiplexer output. Drives either 4I0 or 4I1 according to S; high-impedance when /OE is HIGH. Rated for 50 Ω transmission-line drive at 85 °C.",+ "is_pin1": false,+ "source": {+ "geometry": "SOIC-16_3.9x9.9mm_P1.27mm.kicad_mod",+ "meaning": "page.json:component.pins",+ "correspondence": "kicad: symbol pin number == pad name"+ }+ },+ {+ "pad": "13",+ "kind": "smd",+ "shape": "roundrect",+ "at": [+ 2.475,+ -0.635+ ],+ "rot": 0.0,+ "size": [+ 1.95,+ 0.6+ ],+ "layers": [+ "F.Cu",+ "F.Mask",+ "F.Paste"+ ],+ "thermal": false,+ "pin": "13",+ "name": "4I1",+ "type": "input",+ "description": "Channel 4 data input from source 1. Routed to output 4Y when S is HIGH and /OE is LOW. Schmitt-trigger CMOS input, 5.5 V tolerant.",+ "is_pin1": false,+ "source": {+ "geometry": "SOIC-16_3.9x9.9mm_P1.27mm.kicad_mod",+ "meaning": "page.json:component.pins",+ "correspondence": "kicad: symbol pin number == pad name"+ }+ },+ {+ "pad": "14",+ "kind": "smd",+ "shape": "roundrect",+ "at": [+ 2.475,+ -1.905+ ],+ "rot": 0.0,+ "size": [+ 1.95,+ 0.6+ ],+ "layers": [+ "F.Cu",+ "F.Mask",+ "F.Paste"+ ],+ "thermal": false,+ "pin": "14",+ "name": "4I0",+ "type": "input",+ "description": "Channel 4 data input from source 0. Routed to output 4Y when S is LOW and /OE is LOW. Schmitt-trigger CMOS input, 5.5 V tolerant.",+ "is_pin1": false,+ "source": {+ "geometry": "SOIC-16_3.9x9.9mm_P1.27mm.kicad_mod",+ "meaning": "page.json:component.pins",+ "correspondence": "kicad: symbol pin number == pad name"+ }+ },+ {+ "pad": "15",+ "kind": "smd",+ "shape": "roundrect",+ "at": [+ 2.475,+ -3.175+ ],+ "rot": 0.0,+ "size": [+ 1.95,+ 0.6+ ],+ "layers": [+ "F.Cu",+ "F.Mask",+ "F.Paste"+ ],+ "thermal": false,+ "pin": "15",+ "name": "/OE",+ "type": "input",+ "description": "3-state output enable input, active LOW. When HIGH, all nY outputs are placed into the high-impedance state; when LOW, outputs follow the selected inputs. Schmitt-trigger CMOS input, 5.5 V tolerant.",+ "is_pin1": false,+ "source": {+ "geometry": "SOIC-16_3.9x9.9mm_P1.27mm.kicad_mod",+ "meaning": "page.json:component.pins",+ "correspondence": "kicad: symbol pin number == pad name"+ }+ },+ {+ "pad": "16",+ "kind": "smd",+ "shape": "roundrect",+ "at": [+ 2.475,+ -4.445+ ],+ "rot": 0.0,+ "size": [+ 1.95,+ 0.6+ ],+ "layers": [+ "F.Cu",+ "F.Mask",+ "F.Paste"+ ],+ "thermal": false,+ "pin": "16",+ "name": "VCC",+ "type": "power_in",+ "description": "Positive supply voltage. Recommended operating range 1.65 V to 3.6 V (functional down to 1.2 V); absolute maximum 6.5 V. Decouple locally to GND.",+ "is_pin1": false,+ "source": {+ "geometry": "SOIC-16_3.9x9.9mm_P1.27mm.kicad_mod",+ "meaning": "page.json:component.pins",+ "correspondence": "kicad: symbol pin number == pad name"+ }+ }+ ]+}