component
SN74HC240 Inverting Octal Buffer
Public Made by Adomby adom
Octal inverting buffer and line driver with 3-state outputs in two 4-bit banks.
← Commit history
page.json+192−8@@ -1,8 +1,11 @@ {+ "schema_version": 1,+ "type": "component", "slug": "sn74hc240",+ "title": "SN74HC240 Inverting Octal Buffer",+ "brief": "Octal inverting buffer and line driver with 3-state outputs in two 4-bit banks.", "version": "0.1.0",- "type": "component",- "description": "Octal inverting buffer and line driver with 3-state outputs in two 4-bit banks.",+ "license": "CC-BY-SA-4.0", "tags": [ "logic", "buffer",@@ -13,6 +16,192 @@ "ti", "soic-20" ],+ "component": {+ "mpn": "SN74HC240",+ "manufacturer": "Texas Instruments",+ "package": "SOIC-20",+ "pin_count": 20,+ "category": "Logic",+ "subcategory": "Buffer / Line Driver",+ "datasheet": "https://www.ti.com/lit/ds/symlink/sn74hc240.pdf",+ "parts": {+ "symbol": "sn74hc240.kicad_sym",+ "footprint": "sn74hc240.kicad_mod",+ "model_3d": "sn74hc240.glb"+ },+ "distributor_links": {},+ "pins": [+ {+ "number": "1",+ "name": "1OE",+ "type": "input",+ "description": "Active-low output enable for bank 1 (drives 1Y1-1Y4). Low = outputs active (inverted A data); high = outputs in high-impedance state."+ },+ {+ "number": "2",+ "name": "1A1",+ "type": "input",+ "description": "Bank-1 data input 1; drives inverted onto 1Y1 when 1OE is low."+ },+ {+ "number": "3",+ "name": "2Y4",+ "type": "tri_state",+ "description": "Bank-2 buffered output 4 (inverted 2A4). High-impedance when 2OE is high."+ },+ {+ "number": "4",+ "name": "1A2",+ "type": "input",+ "description": "Bank-1 data input 2; drives inverted onto 1Y2 when 1OE is low."+ },+ {+ "number": "5",+ "name": "2Y3",+ "type": "tri_state",+ "description": "Bank-2 buffered output 3 (inverted 2A3). High-impedance when 2OE is high."+ },+ {+ "number": "6",+ "name": "1A3",+ "type": "input",+ "description": "Bank-1 data input 3; drives inverted onto 1Y3 when 1OE is low."+ },+ {+ "number": "7",+ "name": "2Y2",+ "type": "tri_state",+ "description": "Bank-2 buffered output 2 (inverted 2A2). High-impedance when 2OE is high."+ },+ {+ "number": "8",+ "name": "1A4",+ "type": "input",+ "description": "Bank-1 data input 4; drives inverted onto 1Y4 when 1OE is low."+ },+ {+ "number": "9",+ "name": "2Y1",+ "type": "tri_state",+ "description": "Bank-2 buffered output 1 (inverted 2A1). High-impedance when 2OE is high."+ },+ {+ "number": "10",+ "name": "GND",+ "type": "power_in",+ "description": "Ground reference (0 V)."+ },+ {+ "number": "11",+ "name": "2A1",+ "type": "input",+ "description": "Bank-2 data input 1; drives inverted onto 2Y1 when 2OE is low."+ },+ {+ "number": "12",+ "name": "1Y4",+ "type": "tri_state",+ "description": "Bank-1 buffered output 4 (inverted 1A4). High-impedance when 1OE is high."+ },+ {+ "number": "13",+ "name": "2A2",+ "type": "input",+ "description": "Bank-2 data input 2; drives inverted onto 2Y2 when 2OE is low."+ },+ {+ "number": "14",+ "name": "1Y3",+ "type": "tri_state",+ "description": "Bank-1 buffered output 3 (inverted 1A3). High-impedance when 1OE is high."+ },+ {+ "number": "15",+ "name": "2A3",+ "type": "input",+ "description": "Bank-2 data input 3; drives inverted onto 2Y3 when 2OE is low."+ },+ {+ "number": "16",+ "name": "1Y2",+ "type": "tri_state",+ "description": "Bank-1 buffered output 2 (inverted 1A2). High-impedance when 1OE is high."+ },+ {+ "number": "17",+ "name": "2A4",+ "type": "input",+ "description": "Bank-2 data input 4; drives inverted onto 2Y4 when 2OE is low."+ },+ {+ "number": "18",+ "name": "1Y1",+ "type": "tri_state",+ "description": "Bank-1 buffered output 1 (inverted 1A1). High-impedance when 1OE is high."+ },+ {+ "number": "19",+ "name": "2OE",+ "type": "input",+ "description": "Active-low output enable for bank 2 (drives 2Y1-2Y4). Low = outputs active (inverted A data); high = outputs in high-impedance state."+ },+ {+ "number": "20",+ "name": "VCC",+ "type": "power_in",+ "description": "Positive supply, 2 V to 6 V recommended operating range."+ }+ ],+ "provenance": {+ "extractor": "ds2sf",+ "datasheet": {+ "url": "https://www.ti.com/lit/ds/symlink/sn74hc240.pdf",+ "pages": 35,+ "sha256": "5d711e6c13cd01a1",+ "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 inverting buffer / line driver, 3-state",+ "Logic family": "74HC (CMOS)",+ "Configuration": "8 inverting buffers, two 4-bit banks",+ "Supply voltage": "2 V to 6 V",+ "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": [+ "inverting buffer",+ "octal buffer",+ "bus driver",+ "3-state inverter"+ ],+ "discovery_pitch": "Eight inverting 3-state buffers in two independently enabled 4-bit banks for driving or isolating buses.",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }, "dependencies": {}, "hero": { "type": "image",@@ -28,10 +217,5 @@ "docs/sn74hc240-datasheet.pdf", "viewers/symbol.html", "viewers/footprint.html"- ],- "visibility": "public",- "author": {- "name": "Ray",- "email": "[email protected]"- }+ ] }