component
74HC74D
Public Made by Adomby adom
Nexperia Flip Flops, SOIC-14. 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
+447−1
package.json+2−1@@ -24,6 +24,7 @@ "docs/hero.png", "docs/74hc74d-datasheet.pdf", "viewers/symbol.html",- "viewers/footprint.html"+ "viewers/footprint.html",+ "pads.json" ] }
pads.jsonadded+445@@ -0,0 +1,445 @@+{+ "schema": "adom.pads/1",+ "slug": "74hc74d",+ "footprint": "SOIC-14_3.9x8.7mm_P1.27mm",+ "generated_from": {+ "footprint": "SOIC-14_3.9x8.7mm_P1.27mm@sha256:a885b619b22880c9",+ "pins": "page.json:component.pins",+ "overrides": null+ },+ "pin1": {+ "pad": "1",+ "at": [+ -2.475,+ -3.81+ ],+ "corner": "top-left",+ "source": "silk-marker",+ "derived_from": "SOIC-14_3.9x8.7mm_P1.27mm@sha256:a885b619b22880c9"+ },+ "pad_count": 14,+ "paste_apertures": 0,+ "issues": [],+ "pads": [+ {+ "pad": "1",+ "kind": "smd",+ "shape": "roundrect",+ "at": [+ -2.475,+ -3.81+ ],+ "rot": 0.0,+ "size": [+ 1.95,+ 0.6+ ],+ "layers": [+ "F.Cu",+ "F.Mask",+ "F.Paste"+ ],+ "thermal": false,+ "pin": "1",+ "name": "1RD",+ "type": "input",+ "description": "Flip-flop 1 asynchronous reset-direct input (active LOW). Drives 1Q LOW / 1Q-bar HIGH independent of clock when asserted.",+ "is_pin1": true,+ "source": {+ "geometry": "SOIC-14_3.9x8.7mm_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,+ -2.54+ ],+ "rot": 0.0,+ "size": [+ 1.95,+ 0.6+ ],+ "layers": [+ "F.Cu",+ "F.Mask",+ "F.Paste"+ ],+ "thermal": false,+ "pin": "2",+ "name": "1D",+ "type": "input",+ "description": "Flip-flop 1 data input. Value present at 1D at the LOW-to-HIGH transition of 1CP (meeting setup/hold) is stored and appears at 1Q.",+ "is_pin1": false,+ "source": {+ "geometry": "SOIC-14_3.9x8.7mm_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,+ -1.27+ ],+ "rot": 0.0,+ "size": [+ 1.95,+ 0.6+ ],+ "layers": [+ "F.Cu",+ "F.Mask",+ "F.Paste"+ ],+ "thermal": false,+ "pin": "3",+ "name": "1CP",+ "type": "input",+ "description": "Flip-flop 1 clock input, positive edge-triggered (LOW-to-HIGH). Schmitt-trigger action makes it tolerant of slow clock rise/fall times.",+ "is_pin1": false,+ "source": {+ "geometry": "SOIC-14_3.9x8.7mm_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,+ 0.0+ ],+ "rot": 0.0,+ "size": [+ 1.95,+ 0.6+ ],+ "layers": [+ "F.Cu",+ "F.Mask",+ "F.Paste"+ ],+ "thermal": false,+ "pin": "4",+ "name": "1SD",+ "type": "input",+ "description": "Flip-flop 1 asynchronous set-direct input (active LOW). Drives 1Q HIGH / 1Q-bar LOW independent of clock when asserted.",+ "is_pin1": false,+ "source": {+ "geometry": "SOIC-14_3.9x8.7mm_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,+ 1.27+ ],+ "rot": 0.0,+ "size": [+ 1.95,+ 0.6+ ],+ "layers": [+ "F.Cu",+ "F.Mask",+ "F.Paste"+ ],+ "thermal": false,+ "pin": "5",+ "name": "1Q",+ "type": "output",+ "description": "Flip-flop 1 true output. Reflects the state stored on the previous LOW-to-HIGH transition of 1CP, or is forced by 1SD/1RD.",+ "is_pin1": false,+ "source": {+ "geometry": "SOIC-14_3.9x8.7mm_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,+ 2.54+ ],+ "rot": 0.0,+ "size": [+ 1.95,+ 0.6+ ],+ "layers": [+ "F.Cu",+ "F.Mask",+ "F.Paste"+ ],+ "thermal": false,+ "pin": "6",+ "name": "1Q",+ "type": "output",+ "description": "Flip-flop 1 complement output (1Q-bar). Inverse of 1Q except when both 1SD and 1RD are asserted LOW (both outputs go HIGH per function table).",+ "is_pin1": false,+ "source": {+ "geometry": "SOIC-14_3.9x8.7mm_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,+ 3.81+ ],+ "rot": 0.0,+ "size": [+ 1.95,+ 0.6+ ],+ "layers": [+ "F.Cu",+ "F.Mask",+ "F.Paste"+ ],+ "thermal": false,+ "pin": "7",+ "name": "GND",+ "type": "power_in",+ "description": "Ground reference (0 V) for the device.",+ "is_pin1": false,+ "source": {+ "geometry": "SOIC-14_3.9x8.7mm_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,+ 3.81+ ],+ "rot": 0.0,+ "size": [+ 1.95,+ 0.6+ ],+ "layers": [+ "F.Cu",+ "F.Mask",+ "F.Paste"+ ],+ "thermal": false,+ "pin": "8",+ "name": "2Q",+ "type": "output",+ "description": "Flip-flop 2 complement output (2Q-bar). Inverse of 2Q except when both 2SD and 2RD are LOW.",+ "is_pin1": false,+ "source": {+ "geometry": "SOIC-14_3.9x8.7mm_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,+ 2.54+ ],+ "rot": 0.0,+ "size": [+ 1.95,+ 0.6+ ],+ "layers": [+ "F.Cu",+ "F.Mask",+ "F.Paste"+ ],+ "thermal": false,+ "pin": "9",+ "name": "2Q",+ "type": "output",+ "description": "Flip-flop 2 true output. Reflects the state stored on the previous LOW-to-HIGH transition of 2CP, or is forced by 2SD/2RD.",+ "is_pin1": false,+ "source": {+ "geometry": "SOIC-14_3.9x8.7mm_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,+ 1.27+ ],+ "rot": 0.0,+ "size": [+ 1.95,+ 0.6+ ],+ "layers": [+ "F.Cu",+ "F.Mask",+ "F.Paste"+ ],+ "thermal": false,+ "pin": "10",+ "name": "2SD",+ "type": "input",+ "description": "Flip-flop 2 asynchronous set-direct input (active LOW). Drives 2Q HIGH / 2Q-bar LOW independent of clock when asserted.",+ "is_pin1": false,+ "source": {+ "geometry": "SOIC-14_3.9x8.7mm_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,+ 0.0+ ],+ "rot": 0.0,+ "size": [+ 1.95,+ 0.6+ ],+ "layers": [+ "F.Cu",+ "F.Mask",+ "F.Paste"+ ],+ "thermal": false,+ "pin": "11",+ "name": "2CP",+ "type": "input",+ "description": "Flip-flop 2 clock input, positive edge-triggered (LOW-to-HIGH). Schmitt-trigger action tolerates slow edges.",+ "is_pin1": false,+ "source": {+ "geometry": "SOIC-14_3.9x8.7mm_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,+ -1.27+ ],+ "rot": 0.0,+ "size": [+ 1.95,+ 0.6+ ],+ "layers": [+ "F.Cu",+ "F.Mask",+ "F.Paste"+ ],+ "thermal": false,+ "pin": "12",+ "name": "2D",+ "type": "input",+ "description": "Flip-flop 2 data input. Value latched into flip-flop 2 on the LOW-to-HIGH edge of 2CP and presented at 2Q.",+ "is_pin1": false,+ "source": {+ "geometry": "SOIC-14_3.9x8.7mm_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,+ -2.54+ ],+ "rot": 0.0,+ "size": [+ 1.95,+ 0.6+ ],+ "layers": [+ "F.Cu",+ "F.Mask",+ "F.Paste"+ ],+ "thermal": false,+ "pin": "13",+ "name": "2RD",+ "type": "input",+ "description": "Flip-flop 2 asynchronous reset-direct input (active LOW). Drives 2Q LOW / 2Q-bar HIGH independent of clock when asserted.",+ "is_pin1": false,+ "source": {+ "geometry": "SOIC-14_3.9x8.7mm_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,+ -3.81+ ],+ "rot": 0.0,+ "size": [+ 1.95,+ 0.6+ ],+ "layers": [+ "F.Cu",+ "F.Mask",+ "F.Paste"+ ],+ "thermal": false,+ "pin": "14",+ "name": "VCC",+ "type": "power_in",+ "description": "Positive supply voltage. Operating range 2.0 V to 6.0 V for 74HC74 (4.5 V to 5.5 V for 74HCT74). Absolute maximum 7 V.",+ "is_pin1": false,+ "source": {+ "geometry": "SOIC-14_3.9x8.7mm_P1.27mm.kicad_mod",+ "meaning": "page.json:component.pins",+ "correspondence": "kicad: symbol pin number == pad name"+ }+ }+ ]+}