main
Ray pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) 6361972
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{
 "schema": "adom.pads/1",
 "slug": "sn74lvc574apwr",
 "footprint": "TSSOP-20_4.4x6.5mm_P0.65mm",
 "generated_from": {
  "footprint": "TSSOP-20_4.4x6.5mm_P0.65mm@sha256:b7ca3a31dd45c122",
  "pins": "page.json:component.pins",
  "overrides": null
 },
 "pin1": {
  "pad": "1",
  "at": [
   -2.8625,
   -2.925
  ],
  "corner": "top-left",
  "source": "silk-marker",
  "derived_from": "TSSOP-20_4.4x6.5mm_P0.65mm@sha256:b7ca3a31dd45c122"
 },
 "pad_count": 20,
 "symbol_pins": [
  "1",
  "10",
  "11",
  "12",
  "13",
  "14",
  "15",
  "16",
  "17",
  "18",
  "19",
  "2",
  "20",
  "3",
  "4",
  "5",
  "6",
  "7",
  "8",
  "9"
 ],
 "paste_apertures": 0,
 "issues": [],
 "pads": [
  {
   "pad": "1",
   "kind": "smd",
   "shape": "roundrect",
   "at": [
    -2.8625,
    -2.925
   ],
   "rot": 0.0,
   "size": [
    1.475,
    0.4
   ],
   "layers": [
    "F.Cu",
    "F.Mask",
    "F.Paste"
   ],
   "thermal": false,
   "pin": "1",
   "name": "OE",
   "type": "input",
   "description": "Active-low output enable (OE). When low, the eight Q outputs are enabled; when high, all Q outputs are placed in the high-impedance (3-state) condition. Does not affect internal flip-flop operation. Tie to VCC through a pullup during power-up/down to guarantee Hi-Z.",
   "is_pin1": true,
   "source": {
    "geometry": "TSSOP-20_4.4x6.5mm_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,
    -2.275
   ],
   "rot": 0.0,
   "size": [
    1.475,
    0.4
   ],
   "layers": [
    "F.Cu",
    "F.Mask",
    "F.Paste"
   ],
   "thermal": false,
   "pin": "2",
   "name": "1D",
   "type": "input",
   "description": "Data input to flip-flop 1. Sampled on the rising edge of CLK and transferred to output 1Q. Inputs accept voltages up to 5.5 V.",
   "is_pin1": false,
   "source": {
    "geometry": "TSSOP-20_4.4x6.5mm_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,
    -1.625
   ],
   "rot": 0.0,
   "size": [
    1.475,
    0.4
   ],
   "layers": [
    "F.Cu",
    "F.Mask",
    "F.Paste"
   ],
   "thermal": false,
   "pin": "3",
   "name": "2D",
   "type": "input",
   "description": "Data input to flip-flop 2. Sampled on the rising edge of CLK and transferred to output 2Q.",
   "is_pin1": false,
   "source": {
    "geometry": "TSSOP-20_4.4x6.5mm_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,
    -0.975
   ],
   "rot": 0.0,
   "size": [
    1.475,
    0.4
   ],
   "layers": [
    "F.Cu",
    "F.Mask",
    "F.Paste"
   ],
   "thermal": false,
   "pin": "4",
   "name": "3D",
   "type": "input",
   "description": "Data input to flip-flop 3. Sampled on the rising edge of CLK and transferred to output 3Q.",
   "is_pin1": false,
   "source": {
    "geometry": "TSSOP-20_4.4x6.5mm_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": "4D",
   "type": "input",
   "description": "Data input to flip-flop 4. Sampled on the rising edge of CLK and transferred to output 4Q.",
   "is_pin1": false,
   "source": {
    "geometry": "TSSOP-20_4.4x6.5mm_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,
    0.325
   ],
   "rot": 0.0,
   "size": [
    1.475,
    0.4
   ],
   "layers": [
    "F.Cu",
    "F.Mask",
    "F.Paste"
   ],
   "thermal": false,
   "pin": "6",
   "name": "5D",
   "type": "input",
   "description": "Data input to flip-flop 5. Sampled on the rising edge of CLK and transferred to output 5Q.",
   "is_pin1": false,
   "source": {
    "geometry": "TSSOP-20_4.4x6.5mm_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,
    0.975
   ],
   "rot": 0.0,
   "size": [
    1.475,
    0.4
   ],
   "layers": [
    "F.Cu",
    "F.Mask",
    "F.Paste"
   ],
   "thermal": false,
   "pin": "7",
   "name": "6D",
   "type": "input",
   "description": "Data input to flip-flop 6. Sampled on the rising edge of CLK and transferred to output 6Q.",
   "is_pin1": false,
   "source": {
    "geometry": "TSSOP-20_4.4x6.5mm_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,
    1.625
   ],
   "rot": 0.0,
   "size": [
    1.475,
    0.4
   ],
   "layers": [
    "F.Cu",
    "F.Mask",
    "F.Paste"
   ],
   "thermal": false,
   "pin": "8",
   "name": "7D",
   "type": "input",
   "description": "Data input to flip-flop 7. Sampled on the rising edge of CLK and transferred to output 7Q.",
   "is_pin1": false,
   "source": {
    "geometry": "TSSOP-20_4.4x6.5mm_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": "8D",
   "type": "input",
   "description": "Data input to flip-flop 8. Sampled on the rising edge of CLK and transferred to output 8Q.",
   "is_pin1": false,
   "source": {
    "geometry": "TSSOP-20_4.4x6.5mm_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,
    2.925
   ],
   "rot": 0.0,
   "size": [
    1.475,
    0.4
   ],
   "layers": [
    "F.Cu",
    "F.Mask",
    "F.Paste"
   ],
   "thermal": false,
   "pin": "10",
   "name": "GND",
   "type": "power_in",
   "description": "Ground reference (0 V). Common return for VCC and all input/output signals.",
   "is_pin1": false,
   "source": {
    "geometry": "TSSOP-20_4.4x6.5mm_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,
    2.925
   ],
   "rot": 0.0,
   "size": [
    1.475,
    0.4
   ],
   "layers": [
    "F.Cu",
    "F.Mask",
    "F.Paste"
   ],
   "thermal": false,
   "pin": "11",
   "name": "CLK",
   "type": "input",
   "description": "Clock input common to all eight flip-flops. Data on D inputs is transferred to Q outputs on the rising edge (positive transition) of CLK. Minimum pulse width 3.3 ns at VCC = 3.3 V; fmax up to 150 MHz.",
   "is_pin1": false,
   "source": {
    "geometry": "TSSOP-20_4.4x6.5mm_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,
    2.275
   ],
   "rot": 0.0,
   "size": [
    1.475,
    0.4
   ],
   "layers": [
    "F.Cu",
    "F.Mask",
    "F.Paste"
   ],
   "thermal": false,
   "pin": "12",
   "name": "8Q",
   "type": "tri_state",
   "description": "3-state output of flip-flop 8. Reflects last clocked value of 8D when OE is low; Hi-Z when OE is high. Drive capability of ±24 mA at VCC = 3 V.",
   "is_pin1": false,
   "source": {
    "geometry": "TSSOP-20_4.4x6.5mm_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,
    1.625
   ],
   "rot": 0.0,
   "size": [
    1.475,
    0.4
   ],
   "layers": [
    "F.Cu",
    "F.Mask",
    "F.Paste"
   ],
   "thermal": false,
   "pin": "13",
   "name": "7Q",
   "type": "tri_state",
   "description": "3-state output of flip-flop 7. Reflects last clocked value of 7D when OE is low; Hi-Z when OE is high.",
   "is_pin1": false,
   "source": {
    "geometry": "TSSOP-20_4.4x6.5mm_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": "6Q",
   "type": "tri_state",
   "description": "3-state output of flip-flop 6. Reflects last clocked value of 6D when OE is low; Hi-Z when OE is high.",
   "is_pin1": false,
   "source": {
    "geometry": "TSSOP-20_4.4x6.5mm_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,
    0.325
   ],
   "rot": 0.0,
   "size": [
    1.475,
    0.4
   ],
   "layers": [
    "F.Cu",
    "F.Mask",
    "F.Paste"
   ],
   "thermal": false,
   "pin": "15",
   "name": "5Q",
   "type": "tri_state",
   "description": "3-state output of flip-flop 5. Reflects last clocked value of 5D when OE is low; Hi-Z when OE is high.",
   "is_pin1": false,
   "source": {
    "geometry": "TSSOP-20_4.4x6.5mm_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,
    -0.325
   ],
   "rot": 0.0,
   "size": [
    1.475,
    0.4
   ],
   "layers": [
    "F.Cu",
    "F.Mask",
    "F.Paste"
   ],
   "thermal": false,
   "pin": "16",
   "name": "4Q",
   "type": "tri_state",
   "description": "3-state output of flip-flop 4. Reflects last clocked value of 4D when OE is low; Hi-Z when OE is high.",
   "is_pin1": false,
   "source": {
    "geometry": "TSSOP-20_4.4x6.5mm_P0.65mm.kicad_mod",
    "meaning": "page.json:component.pins",
    "correspondence": "kicad: symbol pin number == pad name"
   }
  },
  {
   "pad": "17",
   "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": "17",
   "name": "3Q",
   "type": "tri_state",
   "description": "3-state output of flip-flop 3. Reflects last clocked value of 3D when OE is low; Hi-Z when OE is high.",
   "is_pin1": false,
   "source": {
    "geometry": "TSSOP-20_4.4x6.5mm_P0.65mm.kicad_mod",
    "meaning": "page.json:component.pins",
    "correspondence": "kicad: symbol pin number == pad name"
   }
  },
  {
   "pad": "18",
   "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": "18",
   "name": "2Q",
   "type": "tri_state",
   "description": "3-state output of flip-flop 2. Reflects last clocked value of 2D when OE is low; Hi-Z when OE is high.",
   "is_pin1": false,
   "source": {
    "geometry": "TSSOP-20_4.4x6.5mm_P0.65mm.kicad_mod",
    "meaning": "page.json:component.pins",
    "correspondence": "kicad: symbol pin number == pad name"
   }
  },
  {
   "pad": "19",
   "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": "19",
   "name": "1Q",
   "type": "tri_state",
   "description": "3-state output of flip-flop 1. Reflects last clocked value of 1D when OE is low; Hi-Z when OE is high.",
   "is_pin1": false,
   "source": {
    "geometry": "TSSOP-20_4.4x6.5mm_P0.65mm.kicad_mod",
    "meaning": "page.json:component.pins",
    "correspondence": "kicad: symbol pin number == pad name"
   }
  },
  {
   "pad": "20",
   "kind": "smd",
   "shape": "roundrect",
   "at": [
    2.8625,
    -2.925
   ],
   "rot": 0.0,
   "size": [
    1.475,
    0.4
   ],
   "layers": [
    "F.Cu",
    "F.Mask",
    "F.Paste"
   ],
   "thermal": false,
   "pin": "20",
   "name": "VCC",
   "type": "power_in",
   "description": "Positive supply voltage, 1.65 V to 3.6 V operating range (SN74LVC574A). Decouple with a local bypass capacitor to GND.",
   "is_pin1": false,
   "source": {
    "geometry": "TSSOP-20_4.4x6.5mm_P0.65mm.kicad_mod",
    "meaning": "page.json:component.pins",
    "correspondence": "kicad: symbol pin number == pad name"
   }
  }
 ]
}