component
SN74HCT244QPWRQ1
Public Made by Adomby adom
Texas Instruments Buffers, Drivers, Receivers, Transceivers, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
← Commit history
sn74hct244qpwrq1: annotated 3D hero (adom-hero 1.4)
4 files changed
+546−544
README.md+1@@ -43,6 +43,7 @@ SN74HCT244QPWRQ1 from Texas Instruments, in a TSSOP-20. Pinout and pin descripti - Symbol: `SN74HCT244QPWRQ1` - Footprint: `Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm` - 3D model: TSSOP-20 (KiCad packages3D, STEP)+- Annotated 3D hero: `sn74hct244qpwrq1-hero.glb` (dashed pad outlines, silkscreen with pin 1, signal names; the [adom-hero standard](https://wiki.adom.inc/adom/component-hero)) is what the viewer shows. Downloads and EDA use the clean model, `sn74hct244qpwrq1-etched.glb`. - 3D model files: `sn74hct244qpwrq1-etched.step` / `sn74hct244qpwrq1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sn74hct244qpwrq1.step` / `sn74hct244qpwrq1.glb` are the bare package body. ## Provenance
page.json+22−22@@ -24,8 +24,8 @@ "parts": { "symbol": "sn74hct244qpwrq1.kicad_sym", "footprint": "sn74hct244qpwrq1.kicad_mod",- "model_3d": "sn74hct244qpwrq1-etched.glb",- "model_3d_plain": "sn74hct244qpwrq1.glb",+ "model_3d": "sn74hct244qpwrq1-hero.glb",+ "model_3d_plain": "sn74hct244qpwrq1-etched.glb", "model_3d_step": "sn74hct244qpwrq1-etched.step", "model_3d_step_plain": "sn74hct244qpwrq1.step", "lbr": "sn74hct244qpwrq1.lbr"@@ -53,55 +53,55 @@ "number": "1", "name": "1OE", "type": "input",- "description": "Output Enable 1 input (active low), enables Y1-Y4 outputs when low and places them in high-impedance when high, TTL input compatible with VIH ≥ 2V and VIL ≤ 0.8V."+ "description": "Output Enable 1 input (active low), enables Y1-Y4 outputs when low and places them in high-impedance when high, TTL input compatible with VIH \u2265 2V and VIL \u2264 0.8V." }, { "number": "2", "name": "1A1", "type": "input",- "description": "Data input A1 for buffer 1, non-inverted data passes to Y1 when 1OE is low, TTL input compatible with maximum input current II ≤ ±100nA."+ "description": "Data input A1 for buffer 1, non-inverted data passes to Y1 when 1OE is low, TTL input compatible with maximum input current II \u2264 \u00b1100nA." }, { "number": "3", "name": "2Y4", "type": "tri_state",- "description": "Output Y4 for buffer 2, tri-state driver with ±6mA capability at 5V, output leakage current ≤ ±10µA when 2OE is high."+ "description": "Output Y4 for buffer 2, tri-state driver with \u00b16mA capability at 5V, output leakage current \u2264 \u00b110\u00b5A when 2OE is high." }, { "number": "4", "name": "1A2", "type": "input",- "description": "Data input A2 for buffer 1, non-inverted data passes to Y2 when 1OE is low, TTL input compatible with maximum input current II ≤ ±100nA."+ "description": "Data input A2 for buffer 1, non-inverted data passes to Y2 when 1OE is low, TTL input compatible with maximum input current II \u2264 \u00b1100nA." }, { "number": "5", "name": "2Y3", "type": "tri_state",- "description": "Output Y3 for buffer 2, tri-state driver with ±6mA capability at 5V, output leakage current ≤ ±10µA when 2OE is high."+ "description": "Output Y3 for buffer 2, tri-state driver with \u00b16mA capability at 5V, output leakage current \u2264 \u00b110\u00b5A when 2OE is high." }, { "number": "6", "name": "1A3", "type": "input",- "description": "Data input A3 for buffer 1, non-inverted data passes to Y3 when 1OE is low, TTL input compatible with maximum input current II ≤ ±100nA."+ "description": "Data input A3 for buffer 1, non-inverted data passes to Y3 when 1OE is low, TTL input compatible with maximum input current II \u2264 \u00b1100nA." }, { "number": "7", "name": "2Y2", "type": "tri_state",- "description": "Output Y2 for buffer 2, tri-state driver with ±6mA capability at 5V, output leakage current ≤ ±10µA when 2OE is high."+ "description": "Output Y2 for buffer 2, tri-state driver with \u00b16mA capability at 5V, output leakage current \u2264 \u00b110\u00b5A when 2OE is high." }, { "number": "8", "name": "1A4", "type": "input",- "description": "Data input A4 for buffer 1, non-inverted data passes to Y4 when 1OE is low, TTL input compatible with maximum input current II ≤ ±100nA."+ "description": "Data input A4 for buffer 1, non-inverted data passes to Y4 when 1OE is low, TTL input compatible with maximum input current II \u2264 \u00b1100nA." }, { "number": "9", "name": "2Y1", "type": "tri_state",- "description": "Output Y1 for buffer 2, tri-state driver with ±6mA capability at 5V, output leakage current ≤ ±10µA when 2OE is high."+ "description": "Output Y1 for buffer 2, tri-state driver with \u00b16mA capability at 5V, output leakage current \u2264 \u00b110\u00b5A when 2OE is high." }, { "number": "10",@@ -113,61 +113,61 @@ "number": "11", "name": "2A1", "type": "input",- "description": "Data input A1 for buffer 2, non-inverted data passes to Y1 when 2OE is low, TTL input compatible with maximum input current II ≤ ±100nA."+ "description": "Data input A1 for buffer 2, non-inverted data passes to Y1 when 2OE is low, TTL input compatible with maximum input current II \u2264 \u00b1100nA." }, { "number": "12", "name": "1Y4", "type": "tri_state",- "description": "Output Y4 for buffer 1, tri-state driver with ±6mA capability at 5V, output leakage current ≤ ±10µA when 1OE is high."+ "description": "Output Y4 for buffer 1, tri-state driver with \u00b16mA capability at 5V, output leakage current \u2264 \u00b110\u00b5A when 1OE is high." }, { "number": "13", "name": "2A2", "type": "input",- "description": "Data input A2 for buffer 2, non-inverted data passes to Y2 when 2OE is low, TTL input compatible with maximum input current II ≤ ±100nA."+ "description": "Data input A2 for buffer 2, non-inverted data passes to Y2 when 2OE is low, TTL input compatible with maximum input current II \u2264 \u00b1100nA." }, { "number": "14", "name": "1Y3", "type": "tri_state",- "description": "Output Y3 for buffer 1, tri-state driver with ±6mA capability at 5V, output leakage current ≤ ±10µA when 1OE is high."+ "description": "Output Y3 for buffer 1, tri-state driver with \u00b16mA capability at 5V, output leakage current \u2264 \u00b110\u00b5A when 1OE is high." }, { "number": "15", "name": "2A3", "type": "input",- "description": "Data input A3 for buffer 2, non-inverted data passes to Y3 when 2OE is low, TTL input compatible with maximum input current II ≤ ±100nA."+ "description": "Data input A3 for buffer 2, non-inverted data passes to Y3 when 2OE is low, TTL input compatible with maximum input current II \u2264 \u00b1100nA." }, { "number": "16", "name": "1Y2", "type": "tri_state",- "description": "Output Y2 for buffer 1, tri-state driver with ±6mA capability at 5V, output leakage current ≤ ±10µA when 1OE is high."+ "description": "Output Y2 for buffer 1, tri-state driver with \u00b16mA capability at 5V, output leakage current \u2264 \u00b110\u00b5A when 1OE is high." }, { "number": "17", "name": "2A4", "type": "input",- "description": "Data input A4 for buffer 2, non-inverted data passes to Y4 when 2OE is low, TTL input compatible with maximum input current II ≤ ±100nA."+ "description": "Data input A4 for buffer 2, non-inverted data passes to Y4 when 2OE is low, TTL input compatible with maximum input current II \u2264 \u00b1100nA." }, { "number": "18", "name": "1Y1", "type": "tri_state",- "description": "Output Y1 for buffer 1, tri-state driver with ±6mA capability at 5V, output leakage current ≤ ±10µA when 1OE is high."+ "description": "Output Y1 for buffer 1, tri-state driver with \u00b16mA capability at 5V, output leakage current \u2264 \u00b110\u00b5A when 1OE is high." }, { "number": "19", "name": "2OE", "type": "input",- "description": "Output Enable 2 input (active low), enables Y1-Y4 outputs when low and places them in high-impedance when high, TTL input compatible with VIH ≥ 2V and VIL ≤ 0.8V."+ "description": "Output Enable 2 input (active low), enables Y1-Y4 outputs when low and places them in high-impedance when high, TTL input compatible with VIH \u2265 2V and VIL \u2264 0.8V." }, { "number": "20", "name": "VCC", "type": "power_in",- "description": "Supply voltage for device operation, recommended operating range 4.5-5.5V, requires 0.1µF bypass capacitor."+ "description": "Supply voltage for device operation, recommended operating range 4.5-5.5V, requires 0.1\u00b5F bypass capacitor." } ], "provenance": {@@ -251,4 +251,4 @@ "visibility": { "public": true }-}+}
sn74hct244qpwrq1-hero.glb⋯ 1 unchanged line ⋯
sn74hct244qpwrq1-hero.overlay.json+523−522@@ -1,524 +1,525 @@ {- "spec": "adom-hero 1.4",- "mpn": "SN74HCT244QPWRQ1",- "kind": "component + footprint reference art",- "board_use": false,- "plane_z_mm": -0.02,- "units": "metre",- "upAxis": "Z",- "layers": {- "pad_outlines": {- "material": "Footprint pads - teal dashed outlines - 50 percent opacity",- "rgba": [- 0.0,- 0.902,- 0.863,- 0.5- ],- "pads": 20,- "span_mm": 7.2,- "dash_mm": 0.18,- "gap_mm": 0.108,- "pad_stroke_mm": 0.0432- },- "silkscreen": {- "material": "Silkscreen reference lines - 30 percent opacity",- "rgba": [- 0.92,- 0.96,- 1.0,- 0.3- ],- "footprint_items": 3,- "pin1": {- "source": "footprint silkscreen",- "pad": "1"- }- },- "signal_names": {- "material": "Signal names - 50 percent opacity",- "rgba": [- 0.92,- 0.96,- 1.0,- 0.5- ],- "font": "DejaVu Sans Mono",- "labels": 20,- "sides": "top + mirrored underside (single-sided)",- "fallback_to_pad_number": 0- }- },- "align": {- "ok": true,- "centre_offset_mm": 0.0,- "tolerance_mm": 0.576,- "orientation_flipped": false,- "contacts_bbox_mm": [- -3.2,- 3.2,- -3.055,- 3.055- ],- "pads_bbox_mm": [- -3.6,- 3.6,- -3.125,- 3.125- ],- "seating_z_mm": 0.0- },- "sources": {- "glb": "sn74hct244qpwrq1.glb",- "glb_sha256": "ce68c5a4d3aaba2dd364e48ac3a28fcc36a22898f53f6c11a3d9c7ce87c4141e",- "footprint": "sn74hct244qpwrq1.kicad_mod",- "footprint_sha256": "b7ca3a31dd45c1225609f9b94e8ba1534bd16edd193628c8d67a8ea669b26b72",- "pins": "page.json component.pins",- "pins_sha256": "3a82824d712fe20fb2499bac6ae79bdd0aa13e27c0145b1acb88bd0a61a92b83"- },- "generator": "adom-wiki 1.7.65 (component_hero)",- "labels": [- {- "pad": "1",- "text": "1OE",- "x": -4.29,- "y": -2.925,- "align": "right",- "vertical": false,- "h": 0.325- },- {- "pad": "2",- "text": "1A1",- "x": -3.7,- "y": -2.275,- "align": "right",- "vertical": false,- "h": 0.325- },- {- "pad": "3",- "text": "2Y4",- "x": -3.7,- "y": -1.625,- "align": "right",- "vertical": false,- "h": 0.325- },- {- "pad": "4",- "text": "1A2",- "x": -3.7,- "y": -0.975,- "align": "right",- "vertical": false,- "h": 0.325- },- {- "pad": "5",- "text": "2Y3",- "x": -3.7,- "y": -0.325,- "align": "right",- "vertical": false,- "h": 0.325- },- {- "pad": "6",- "text": "1A3",- "x": -3.7,- "y": 0.325,- "align": "right",- "vertical": false,- "h": 0.325- },- {- "pad": "7",- "text": "2Y2",- "x": -3.7,- "y": 0.975,- "align": "right",- "vertical": false,- "h": 0.325- },- {- "pad": "8",- "text": "1A4",- "x": -3.7,- "y": 1.625,- "align": "right",- "vertical": false,- "h": 0.325- },- {- "pad": "9",- "text": "2Y1",- "x": -3.7,- "y": 2.275,- "align": "right",- "vertical": false,- "h": 0.325- },- {- "pad": "10",- "text": "GND",- "x": -3.7,- "y": 2.925,- "align": "right",- "vertical": false,- "h": 0.325- },- {- "pad": "11",- "text": "2A1",- "x": 3.7,- "y": 2.925,- "align": "left",- "vertical": false,- "h": 0.325- },- {- "pad": "12",- "text": "1Y4",- "x": 3.7,- "y": 2.275,- "align": "left",- "vertical": false,- "h": 0.325- },- {- "pad": "13",- "text": "2A2",- "x": 3.7,- "y": 1.625,- "align": "left",- "vertical": false,- "h": 0.325- },- {- "pad": "14",- "text": "1Y3",- "x": 3.7,- "y": 0.975,- "align": "left",- "vertical": false,- "h": 0.325- },- {- "pad": "15",- "text": "2A3",- "x": 3.7,- "y": 0.325,- "align": "left",- "vertical": false,- "h": 0.325- },- {- "pad": "16",- "text": "1Y2",- "x": 3.7,- "y": -0.325,- "align": "left",- "vertical": false,- "h": 0.325- },- {- "pad": "17",- "text": "2A4",- "x": 3.7,- "y": -0.975,- "align": "left",- "vertical": false,- "h": 0.325- },- {- "pad": "18",- "text": "1Y1",- "x": 3.7,- "y": -1.625,- "align": "left",- "vertical": false,- "h": 0.325- },- {- "pad": "19",- "text": "2OE",- "x": 3.7,- "y": -2.275,- "align": "left",- "vertical": false,- "h": 0.325- },- {- "pad": "20",- "text": "VCC",- "x": 3.7,- "y": -2.925,- "align": "left",- "vertical": false,- "h": 0.325- }+ "spec": "adom-hero 1.4",+ "mpn": "SN74HCT244QPWRQ1",+ "kind": "component + footprint reference art",+ "board_use": false,+ "plane_z_mm": -0.02,+ "units": "metre",+ "upAxis": "Z",+ "layers": {+ "pad_outlines": {+ "material": "Footprint pads - teal dashed outlines - 50 percent opacity",+ "rgba": [+ 0.0,+ 0.902,+ 0.863,+ 0.5+ ],+ "pads": 20,+ "span_mm": 7.2,+ "dash_mm": 0.18,+ "gap_mm": 0.108,+ "pad_stroke_mm": 0.0432+ },+ "silkscreen": {+ "material": "Silkscreen reference lines - 30 percent opacity",+ "rgba": [+ 0.92,+ 0.96,+ 1.0,+ 0.3+ ],+ "footprint_items": 3,+ "pin1": {+ "source": "footprint silkscreen",+ "pad": "1"+ }+ },+ "signal_names": {+ "material": "Signal names - 50 percent opacity",+ "rgba": [+ 0.92,+ 0.96,+ 1.0,+ 0.5+ ],+ "font": "DejaVu Sans Mono",+ "labels": 20,+ "sides": "top + mirrored underside (single-sided)",+ "omitted": null,+ "fallback_to_pad_number": 0+ }+ },+ "align": {+ "ok": true,+ "centre_offset_mm": 0.0,+ "tolerance_mm": 0.576,+ "orientation_flipped": false,+ "contacts_bbox_mm": [+ -3.2,+ 3.2,+ -3.055,+ 3.055+ ],+ "pads_bbox_mm": [+ -3.6,+ 3.6,+ -3.125,+ 3.125 ],- "pads": [- {- "number": "1",- "shape": "roundrect",- "center_mm": [- -2.8625,- -2.925- ],- "size_mm": [- 1.475,- 0.4- ],- "rot": 0.0- },- {- "number": "2",- "shape": "roundrect",- "center_mm": [- -2.8625,- -2.275- ],- "size_mm": [- 1.475,- 0.4- ],- "rot": 0.0- },- {- "number": "3",- "shape": "roundrect",- "center_mm": [- -2.8625,- -1.625- ],- "size_mm": [- 1.475,- 0.4- ],- "rot": 0.0- },- {- "number": "4",- "shape": "roundrect",- "center_mm": [- -2.8625,- -0.975- ],- "size_mm": [- 1.475,- 0.4- ],- "rot": 0.0- },- {- "number": "5",- "shape": "roundrect",- "center_mm": [- -2.8625,- -0.325- ],- "size_mm": [- 1.475,- 0.4- ],- "rot": 0.0- },- {- "number": "6",- "shape": "roundrect",- "center_mm": [- -2.8625,- 0.325- ],- "size_mm": [- 1.475,- 0.4- ],- "rot": 0.0- },- {- "number": "7",- "shape": "roundrect",- "center_mm": [- -2.8625,- 0.975- ],- "size_mm": [- 1.475,- 0.4- ],- "rot": 0.0- },- {- "number": "8",- "shape": "roundrect",- "center_mm": [- -2.8625,- 1.625- ],- "size_mm": [- 1.475,- 0.4- ],- "rot": 0.0- },- {- "number": "9",- "shape": "roundrect",- "center_mm": [- -2.8625,- 2.275- ],- "size_mm": [- 1.475,- 0.4- ],- "rot": 0.0- },- {- "number": "10",- "shape": "roundrect",- "center_mm": [- -2.8625,- 2.925- ],- "size_mm": [- 1.475,- 0.4- ],- "rot": 0.0- },- {- "number": "11",- "shape": "roundrect",- "center_mm": [- 2.8625,- 2.925- ],- "size_mm": [- 1.475,- 0.4- ],- "rot": 0.0- },- {- "number": "12",- "shape": "roundrect",- "center_mm": [- 2.8625,- 2.275- ],- "size_mm": [- 1.475,- 0.4- ],- "rot": 0.0- },- {- "number": "13",- "shape": "roundrect",- "center_mm": [- 2.8625,- 1.625- ],- "size_mm": [- 1.475,- 0.4- ],- "rot": 0.0- },- {- "number": "14",- "shape": "roundrect",- "center_mm": [- 2.8625,- 0.975- ],- "size_mm": [- 1.475,- 0.4- ],- "rot": 0.0- },- {- "number": "15",- "shape": "roundrect",- "center_mm": [- 2.8625,- 0.325- ],- "size_mm": [- 1.475,- 0.4- ],- "rot": 0.0- },- {- "number": "16",- "shape": "roundrect",- "center_mm": [- 2.8625,- -0.325- ],- "size_mm": [- 1.475,- 0.4- ],- "rot": 0.0- },- {- "number": "17",- "shape": "roundrect",- "center_mm": [- 2.8625,- -0.975- ],- "size_mm": [- 1.475,- 0.4- ],- "rot": 0.0- },- {- "number": "18",- "shape": "roundrect",- "center_mm": [- 2.8625,- -1.625- ],- "size_mm": [- 1.475,- 0.4- ],- "rot": 0.0- },- {- "number": "19",- "shape": "roundrect",- "center_mm": [- 2.8625,- -2.275- ],- "size_mm": [- 1.475,- 0.4- ],- "rot": 0.0- },- {- "number": "20",- "shape": "roundrect",- "center_mm": [- 2.8625,- -2.925- ],- "size_mm": [- 1.475,- 0.4- ],- "rot": 0.0- }- ]-}+ "seating_z_mm": 0.0+ },+ "sources": {+ "glb": "sn74hct244qpwrq1-etched.glb",+ "glb_sha256": "bd046e2d2ff57999afc6491bdf057ef7dea3f021e6aae91441ae46b776247e13",+ "footprint": "sn74hct244qpwrq1.kicad_mod",+ "footprint_sha256": "b7ca3a31dd45c1225609f9b94e8ba1534bd16edd193628c8d67a8ea669b26b72",+ "pins": "page.json component.pins",+ "pins_sha256": "3a82824d712fe20fb2499bac6ae79bdd0aa13e27c0145b1acb88bd0a61a92b83"+ },+ "generator": "factory/hero_glb.py",+ "labels": [+ {+ "pad": "1",+ "text": "1OE",+ "x": -4.29,+ "y": -2.925,+ "align": "right",+ "vertical": false,+ "h": 0.325+ },+ {+ "pad": "2",+ "text": "1A1",+ "x": -3.7,+ "y": -2.275,+ "align": "right",+ "vertical": false,+ "h": 0.325+ },+ {+ "pad": "3",+ "text": "2Y4",+ "x": -3.7,+ "y": -1.625,+ "align": "right",+ "vertical": false,+ "h": 0.325+ },+ {+ "pad": "4",+ "text": "1A2",+ "x": -3.7,+ "y": -0.975,+ "align": "right",+ "vertical": false,+ "h": 0.325+ },+ {+ "pad": "5",+ "text": "2Y3",+ "x": -3.7,+ "y": -0.325,+ "align": "right",+ "vertical": false,+ "h": 0.325+ },+ {+ "pad": "6",+ "text": "1A3",+ "x": -3.7,+ "y": 0.325,+ "align": "right",+ "vertical": false,+ "h": 0.325+ },+ {+ "pad": "7",+ "text": "2Y2",+ "x": -3.7,+ "y": 0.975,+ "align": "right",+ "vertical": false,+ "h": 0.325+ },+ {+ "pad": "8",+ "text": "1A4",+ "x": -3.7,+ "y": 1.625,+ "align": "right",+ "vertical": false,+ "h": 0.325+ },+ {+ "pad": "9",+ "text": "2Y1",+ "x": -3.7,+ "y": 2.275,+ 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