component
SN74HC244 Octal Buffer
Public Made by Adomby adom
Octal buffer and line driver with 3-state outputs, organized as two 4-bit groups.
← Commit history
page.json+192−8@@ -1,8 +1,11 @@ {+ "schema_version": 1,+ "type": "component", "slug": "sn74hc244",+ "title": "SN74HC244 Octal Buffer",+ "brief": "Octal buffer and line driver with 3-state outputs, organized as two 4-bit groups.", "version": "0.1.0",- "type": "component",- "description": "Octal buffer and line driver with 3-state outputs, organized as two 4-bit groups.",+ "license": "CC-BY-SA-4.0", "tags": [ "logic", "buffer",@@ -12,6 +15,192 @@ "ti", "soic-20" ],+ "component": {+ "mpn": "SN74HC244",+ "manufacturer": "Texas Instruments",+ "package": "SOIC-20",+ "pin_count": 20,+ "category": "Logic",+ "subcategory": "Buffer / Line Driver",+ "datasheet": "https://www.ti.com/lit/ds/symlink/sn74hc244.pdf",+ "parts": {+ "symbol": "sn74hc244.kicad_sym",+ "footprint": "sn74hc244.kicad_mod",+ "model_3d": "sn74hc244.glb"+ },+ "distributor_links": {},+ "pins": [+ {+ "number": "1",+ "name": "1OE",+ "type": "input",+ "description": "Active-low output enable for the first 4-bit buffer (drives 1Y1..1Y4). When low, 1Y outputs follow 1A inputs; when high, 1Y outputs are placed in the high-impedance (3-state) state."+ },+ {+ "number": "2",+ "name": "1A1",+ "type": "input",+ "description": "Data input 1 for the first 4-bit buffer. Buffered noninverted to output 1Y1 when 1OE is low."+ },+ {+ "number": "3",+ "name": "2Y4",+ "type": "tri_state",+ "description": "3-state buffered output 4 of the second 4-bit buffer. Follows input 2A4 when 2OE is low; Hi-Z when 2OE is high. Drives \u00b16mA at VCC = 5V."+ },+ {+ "number": "4",+ "name": "1A2",+ "type": "input",+ "description": "Data input 2 for the first 4-bit buffer. Buffered noninverted to output 1Y2 when 1OE is low."+ },+ {+ "number": "5",+ "name": "2Y3",+ "type": "tri_state",+ "description": "3-state buffered output 3 of the second 4-bit buffer. Follows input 2A3 when 2OE is low; Hi-Z when 2OE is high."+ },+ {+ "number": "6",+ "name": "1A3",+ "type": "input",+ "description": "Data input 3 for the first 4-bit buffer. Buffered noninverted to output 1Y3 when 1OE is low."+ },+ {+ "number": "7",+ "name": "2Y2",+ "type": "tri_state",+ "description": "3-state buffered output 2 of the second 4-bit buffer. Follows input 2A2 when 2OE is low; Hi-Z when 2OE is high."+ },+ {+ "number": "8",+ "name": "1A4",+ "type": "input",+ "description": "Data input 4 for the first 4-bit buffer. Buffered noninverted to output 1Y4 when 1OE is low."+ },+ {+ "number": "9",+ "name": "2Y1",+ "type": "tri_state",+ "description": "3-state buffered output 1 of the second 4-bit buffer. Follows input 2A1 when 2OE is low; Hi-Z when 2OE is high."+ },+ {+ "number": "10",+ "name": "GND",+ "type": "power_in",+ "description": "Device ground reference (0 V). Bond directly to the board ground plane."+ },+ {+ "number": "11",+ "name": "2A1",+ "type": "input",+ "description": "Data input 1 for the second 4-bit buffer. Buffered noninverted to output 2Y1 when 2OE is low."+ },+ {+ "number": "12",+ "name": "1Y4",+ "type": "tri_state",+ "description": "3-state buffered output 4 of the first 4-bit buffer. Follows input 1A4 when 1OE is low; Hi-Z when 1OE is high."+ },+ {+ "number": "13",+ "name": "2A2",+ "type": "input",+ "description": "Data input 2 for the second 4-bit buffer. Buffered noninverted to output 2Y2 when 2OE is low."+ },+ {+ "number": "14",+ "name": "1Y3",+ "type": "tri_state",+ "description": "3-state buffered output 3 of the first 4-bit buffer. Follows input 1A3 when 1OE is low; Hi-Z when 1OE is high."+ },+ {+ "number": "15",+ "name": "2A3",+ "type": "input",+ "description": "Data input 3 for the second 4-bit buffer. Buffered noninverted to output 2Y3 when 2OE is low."+ },+ {+ "number": "16",+ "name": "1Y2",+ "type": "tri_state",+ "description": "3-state buffered output 2 of the first 4-bit buffer. Follows input 1A2 when 1OE is low; Hi-Z when 1OE is high."+ },+ {+ "number": "17",+ "name": "2A4",+ "type": "input",+ "description": "Data input 4 for the second 4-bit buffer. Buffered noninverted to output 2Y4 when 2OE is low."+ },+ {+ "number": "18",+ "name": "1Y1",+ "type": "tri_state",+ "description": "3-state buffered output 1 of the first 4-bit buffer. Follows input 1A1 when 1OE is low; Hi-Z when 1OE is high."+ },+ {+ "number": "19",+ "name": "2OE",+ "type": "input",+ "description": "Active-low output enable for the second 4-bit buffer (drives 2Y1..2Y4). When low, 2Y outputs follow 2A inputs; when high, 2Y outputs are placed in the high-impedance (3-state) state."+ },+ {+ "number": "20",+ "name": "VCC",+ "type": "power_in",+ "description": "Positive supply voltage, 2 V to 6 V (5 V nominal). ICC = 80 \u00b5A max. Decouple locally to GND with a 0.1 \u00b5F ceramic capacitor."+ }+ ],+ "provenance": {+ "extractor": "ds2sf",+ "datasheet": {+ "url": "https://www.ti.com/lit/ds/symlink/sn74hc244.pdf",+ "pages": 42,+ "sha256": "89be5869d39fe0cb",+ "source_tier": "mfr"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 20,+ "described": 20,+ "cites_pages": true,+ "refuses_to_fabricate": true+ }+ },+ "viewers": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ }+ },+ "metadata": {+ "specs": {+ "Type": "Octal buffer / line driver, 3-state",+ "Logic family": "74HC (CMOS)",+ "Supply voltage": "2 V to 6 V",+ "Outputs": "8, 3-state, two 4-bit banks",+ "Output current": "+-6 mA at VCC = 4.5 V",+ "Propagation delay": "11 ns typ at 5 V",+ "Operating temperature": "-40 C to 85 C"+ }+ },+ "sections": [+ "hero",+ "viewers",+ "readme",+ "breadcrumbs",+ "info"+ ],+ "discovery_triggers": [+ "octal buffer",+ "bus driver",+ "3-state buffer",+ "signal fan-out"+ ],+ "discovery_pitch": "Drive a bus or fan out eight signals with 3-state control, split into two independently enabled 4-bit banks.",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }, "dependencies": {}, "hero": { "type": "image",@@ -27,10 +216,5 @@ "docs/sn74hc244-datasheet.pdf", "viewers/symbol.html", "viewers/footprint.html"- ],- "visibility": "public",- "author": {- "name": "Ray",- "email": "[email protected]"- }+ ] }