component
LM2903QD
Public Made by Adomby adom
Texas Instruments Comparators, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+45@@ -0,0 +1,45 @@+# LM2903QD++**Texas Instruments** · Comparators · SOIC-8++LM2903QD from Texas Instruments, in a SOIC-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | 1OUT | output | Open-drain output of comparator 1; sinks current to GND when 1IN- exceeds 1IN+ plus input offset voltage; output low voltage 0.13-0.4V at 4mA sink current, maximum sink current 20mA. |+| 2 | 1IN- | input | Inverting input of comparator 1; input common-mode range 0V to (VCC-1.5V) at 25°C or 0V to (VCC-2V) across temperature range -40 to 125°C; input bias current 25-250nA; input offset voltage ±15mV maximum. |+| 3 | 1IN+ | input | Non-inverting input of comparator 1; input common-mode range 0V to (VCC-1.5V) at 25°C or 0V to (VCC-2V) across temperature range -40 to 125°C; input bias current 25-250nA; input offset voltage ±15mV maximum. |+| 4 | GND | power_in | Ground reference; circuit return and common reference potential for all signal measurements; connect to 0V system ground. |+| 5 | 2IN+ | input | Non-inverting input of comparator 2; input common-mode range 0V to (VCC-1.5V) at 25°C or 0V to (VCC-2V) across temperature range -40 to 125°C; input bias current 25-250nA; input offset voltage ±15mV maximum. |+| 6 | 2IN- | input | Inverting input of comparator 2; input common-mode range 0V to (VCC-1.5V) at 25°C or 0V to (VCC-2V) across temperature range -40 to 125°C; input bias current 25-250nA; input offset voltage ±15mV maximum. |+| 7 | 2OUT | output | Open-drain output of comparator 2; sinks current to GND when 2IN- exceeds 2IN+ plus input offset voltage; output low voltage 0.13-0.4V at 4mA sink current, maximum sink current 20mA. |+| 8 | VCC | power_in | Positive power supply input; operating voltage range 2-30V for LM2903 standard version; quiescent supply current 0.8-1mA at 5V to maximum 2.5mA at 30V; bypass to GND with 0.1µF capacitor. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | SOIC-8 |+| Category | Amplifiers/Comparators |+| Pins | 8 |++## CAD (KiCad official)++- Symbol: `LM2903QD`+- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`+- 3D model: SOIC-8 (KiCad packages3D, STEP)+- 3D model files: `lm2903qd-etched.step` / `lm2903qd-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm2903qd.step` / `lm2903qd.glb` are the bare package body.++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/lm393a) (56 pp, sha256 `15cea39fa1eb17a7`, retrieved 2026-09-23, tier: lcsc)+- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.+- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.2`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-sonnet-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/lm2903qd-datasheet.pdf)
page.jsonadded+143@@ -0,0 +1,143 @@+{+ "slug": "lm2903qd",+ "version": "0.1.0",+ "type": "component",+ "description": "Texas Instruments Comparators, SOIC-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "amplifiers-comparators",+ "lm2903qd",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "lm2903qd.kicad_sym",+ "lm2903qd.kicad_mod",+ "lm2903qd.glb",+ "lm2903qd.step",+ "lm2903qd.lbr",+ "docs/hero.png",+ "docs/lm2903qd-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html"+ ],+ "component": {+ "mpn": "LM2903QD",+ "manufacturer": "Texas Instruments",+ "package": "SOIC-8",+ "pin_count": 8,+ "category": "Amplifiers/Comparators",+ "subcategory": "Comparators",+ "datasheet": "https://www.ti.com/cn/lit/gpn/lm393a",+ "parts": {+ "symbol": "lm2903qd.kicad_sym",+ "footprint": "lm2903qd.kicad_mod",+ "model_3d": "lm2903qd-etched.glb",+ "model_3d_plain": "lm2903qd.glb",+ "model_3d_step": "lm2903qd-etched.step",+ "model_3d_step_plain": "lm2903qd.step",+ "lbr": "lm2903qd.lbr"+ },+ "distributor_links": {+ "lcsc": "C2861369"+ },+ "pins": [+ {+ "number": "1",+ "name": "1OUT",+ "type": "output",+ "description": "Open-drain output of comparator 1; sinks current to GND when 1IN- exceeds 1IN+ plus input offset voltage; output low voltage 0.13-0.4V at 4mA sink current, maximum sink current 20mA."+ },+ {+ "number": "2",+ "name": "1IN–",+ "type": "input",+ "description": "Inverting input of comparator 1; input common-mode range 0V to (VCC-1.5V) at 25°C or 0V to (VCC-2V) across temperature range -40 to 125°C; input bias current 25-250nA; input offset voltage ±15mV maximum."+ },+ {+ "number": "3",+ "name": "1IN+",+ "type": "input",+ "description": "Non-inverting input of comparator 1; input common-mode range 0V to (VCC-1.5V) at 25°C or 0V to (VCC-2V) across temperature range -40 to 125°C; input bias current 25-250nA; input offset voltage ±15mV maximum."+ },+ {+ "number": "4",+ "name": "GND",+ "type": "power_in",+ "description": "Ground reference; circuit return and common reference potential for all signal measurements; connect to 0V system ground."+ },+ {+ "number": "5",+ "name": "2IN+",+ "type": "input",+ "description": "Non-inverting input of comparator 2; input common-mode range 0V to (VCC-1.5V) at 25°C or 0V to (VCC-2V) across temperature range -40 to 125°C; input bias current 25-250nA; input offset voltage ±15mV maximum."+ },+ {+ "number": "6",+ "name": "2IN–",+ "type": "input",+ "description": "Inverting input of comparator 2; input common-mode range 0V to (VCC-1.5V) at 25°C or 0V to (VCC-2V) across temperature range -40 to 125°C; input bias current 25-250nA; input offset voltage ±15mV maximum."+ },+ {+ "number": "7",+ "name": "2OUT",+ "type": "output",+ "description": "Open-drain output of comparator 2; sinks current to GND when 2IN- exceeds 2IN+ plus input offset voltage; output low voltage 0.13-0.4V at 4mA sink current, maximum sink current 20mA."+ },+ {+ "number": "8",+ "name": "VCC",+ "type": "power_in",+ "description": "Positive power supply input; operating voltage range 2-30V for LM2903 standard version; quiescent supply current 0.8-1mA at 5V to maximum 2.5mA at 30V; bypass to GND with 0.1µF capacitor."+ }+ ],+ "provenance": {+ "extractor": "extract_pins 0.2",+ "factory_chain": {+ "factory": "2.0.0",+ "extractor": "extract_pins 0.2",+ "primary_model": "claude-haiku-4-5-20251001",+ "primary_mode": "text",+ "consensus_model": "claude-sonnet-5",+ "consensus": "agreed",+ "guards": "pin_guards 0.1: passed",+ "guard_notes": [+ "extractor flagged: Open-drain outputs classified as 'output' type; in some tools these might be classified as 'tri_stat; Input offset voltage specification ±15mV is the maximum across full temperature range (-40 to 125°C)"+ ],+ "pages_sent": 56,+ "cost_usd": 0.5415,+ "at": "2026-09-23T10:23:01"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/lm393a",+ "pages": 56,+ "sha256": "15cea39fa1eb17a7",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 8,+ "described": 8,+ "cites_pages": true,+ "refuses_to_fabricate": true+ }+ },+ "viewers": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ }+ },+ "visibility": "public",+ "org": "adom",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}