component
SN74HC138
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TI 3-to-8 line decoder/demultiplexer, SOIC-16. Three enables, eight active-low outputs, HC CMOS 2-6 V. Datasheet-verified.
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page.json+170−8@@ -1,8 +1,11 @@ {+ "schema_version": 1,+ "type": "component", "slug": "sn74hc138",+ "title": "SN74HC138",+ "brief": "TI 3-to-8 line decoder/demultiplexer, SOIC-16. Three enables, eight active-low outputs, HC CMOS 2-6 V. Datasheet-verified.", "version": "0.1.0",- "type": "component",- "description": "TI 3-to-8 line decoder/demultiplexer, SOIC-16. Three enables, eight active-low outputs, HC CMOS 2-6 V. Datasheet-verified.",+ "license": "CC-BY-SA-4.0", "tags": [ "component", "logic",@@ -12,6 +15,170 @@ "soic-16", "texas-instruments" ],+ "component": {+ "mpn": "SN74HC138",+ "manufacturer": "Texas Instruments",+ "package": "SOIC-16",+ "pin_count": 16,+ "category": "Logic IC",+ "subcategory": "3-to-8 line decoder / demux",+ "datasheet": "https://www.ti.com/lit/ds/symlink/sn74hc138.pdf",+ "parts": {+ "symbol": "sn74hc138.kicad_sym",+ "footprint": "sn74hc138.kicad_mod",+ "model_3d": "sn74hc138.glb"+ },+ "distributor_links": {},+ "pins": [+ {+ "number": "1",+ "name": "A",+ "type": "input",+ "description": "Select input A (least significant bit of the 3-bit binary address selecting which Y output is asserted low)."+ },+ {+ "number": "2",+ "name": "B",+ "type": "input",+ "description": "Select input B (middle bit of the 3-bit binary address)."+ },+ {+ "number": "3",+ "name": "C",+ "type": "input",+ "description": "Select input C (most significant bit of the 3-bit binary address)."+ },+ {+ "number": "4",+ "name": "G2A",+ "type": "input",+ "description": "Active-low enable A. Must be low (together with G2B low and G1 high) to enable outputs; otherwise all Y outputs are forced high."+ },+ {+ "number": "5",+ "name": "G2B",+ "type": "input",+ "description": "Active-low enable B. Must be low (together with G2A low and G1 high) to enable outputs."+ },+ {+ "number": "6",+ "name": "G1",+ "type": "input",+ "description": "Active-high enable. Must be high (together with G2A and G2B low) to enable outputs."+ },+ {+ "number": "7",+ "name": "Y7",+ "type": "output",+ "description": "Decoded output 7 (most significant, active low). Asserts low when enabled and CBA = 111. Drive capability \u00b14 mA at VCC = 5 V."+ },+ {+ "number": "8",+ "name": "GND",+ "type": "power_in",+ "description": "Ground reference (0 V)."+ },+ {+ "number": "9",+ "name": "Y6",+ "type": "output",+ "description": "Decoded output 6 (active low). Asserts low when enabled and CBA = 110."+ },+ {+ "number": "10",+ "name": "Y5",+ "type": "output",+ "description": "Decoded output 5 (active low). Asserts low when enabled and CBA = 101."+ },+ {+ "number": "11",+ "name": "Y4",+ "type": "output",+ "description": "Decoded output 4 (active low). Asserts low when enabled and CBA = 100."+ },+ {+ "number": "12",+ "name": "Y3",+ "type": "output",+ "description": "Decoded output 3 (active low). Asserts low when enabled and CBA = 011."+ },+ {+ "number": "13",+ "name": "Y2",+ "type": "output",+ "description": "Decoded output 2 (active low). Asserts low when enabled and CBA = 010."+ },+ {+ "number": "14",+ "name": "Y1",+ "type": "output",+ "description": "Decoded output 1 (active low). Asserts low when enabled and CBA = 001."+ },+ {+ "number": "15",+ "name": "Y0",+ "type": "output",+ "description": "Decoded output 0 (least significant, active low). Asserts low when enabled and CBA = 000."+ },+ {+ "number": "16",+ "name": "VCC",+ "type": "power_in",+ "description": "Positive supply voltage, 2 V to 6 V (nominal 5 V)."+ }+ ],+ "provenance": {+ "extractor": "ds2sf",+ "datasheet": {+ "url": "https://www.ti.com/lit/ds/symlink/sn74hc138.pdf",+ "pages": 35,+ "sha256": "ba6cab88a44c1c9a",+ "source_tier": "mfr"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 16,+ "described": 16,+ "cites_pages": true,+ "refuses_to_fabricate": true+ }+ },+ "viewers": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ }+ },+ "metadata": {+ "specs": {+ "Type": "3-to-8 decoder / demultiplexer",+ "Select inputs": "3 (A/B/C)",+ "Outputs": "8 active-low (Y0-Y7)",+ "Enables": "G1 (high) + G2A/G2B (low)",+ "Logic family": "HC (high-speed CMOS)",+ "Supply voltage": "2-6 V",+ "Package": "SOIC-16",+ "Body (L\u00d7W\u00d7H)": "9.9 \u00d7 3.9 \u00d7 1.75 mm"+ }+ },+ "sections": [+ "hero",+ "viewers",+ "readme",+ "breadcrumbs",+ "info"+ ],+ "discovery_triggers": [+ "sn74hc138",+ "74hc138",+ "3 to 8 decoder",+ "address decoder",+ "demultiplexer"+ ],+ "discovery_pitch": "SN74HC138 3-to-8 line decoder/demultiplexer (SOIC-16) with datasheet-verified pinout, KiCad symbol/footprint/3D, and full provenance.",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }, "dependencies": {}, "hero": { "type": "image",@@ -27,10 +194,5 @@ "docs/sn74hc138-datasheet.pdf", "viewers/symbol.html", "viewers/footprint.html"- ],- "visibility": "public",- "author": {- "name": "Ray",- "email": "[email protected]"- }+ ] }