component
TL331LV
Public Unreviewedby barrett-land
TL331LV - single low-voltage comparator, SOT-23-5, with REVERSED input pinout (IN- = pin 1, IN+ = pin 3). Canonical adom-lbr JSON + KiCad symbol/footprint/3D. Used on the USB3-to-Ethernet Data-Only Molecule.
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README.mdadded+33@@ -0,0 +1,33 @@+# TL331LV++Comparator · package `Package_TO_SOT_SMD:SOT-23-5_HandSoldering` · MPN `TL331LV` · Texas Instruments++Used on the **USB3 to Ethernet (Data Only) Molecule** board as 1x (U2), driving the HD3SS3212 USB-C orientation mux.++Ships the KiCad symbol, footprint, STEP + GLB 3D model, and the canonical **adom-lbr JSON** (one-command conversion to KiCad, native Altium, or EAGLE/Fusion).++## ⚠️ Reversed input pinout++The TL331LV deliberately **reverses its inputs** relative to the common SOT-23-5 comparator pinout. TI flags this on the datasheet pin diagram: *"Note reversed inputs compared to similar common pinout."*++| Pin | TL331LV | LMV331 (common pinout) |+|-----|---------|------------------------|+| 1 | **IN−** | IN+ |+| 2 | GND | GND |+| 3 | **IN+** | IN− |+| 4 | OUT | OUT |+| 5 | V_CC | V_CC |++Only the inputs differ — GND, OUT and V_CC are identical. That makes the two parts **mechanically interchangeable drop-ins whose comparator polarity is opposite**, so an unintended substitution silently inverts the decision and still passes AOI.++Used deliberately here: fitting the TL331LV in an LMV331 footprint inverts the CC1/CC2 orientation decision with **zero layout change**, which is how the molecule's USB-C orientation detection was corrected.++## Pinout as shipped++```+1 IN- input+2 V- power_in+3 IN+ input+4 OUT output+5 V+ power_in+```
page.jsonadded+39@@ -0,0 +1,39 @@+{+ "slug": "tl331lv",+ "title": "TL331LV",+ "type": "component",+ "version": "0.1.0",+ "description": "TL331LV — single low-voltage comparator, SOT-23-5, with REVERSED input pinout (IN- = pin 1, IN+ = pin 3). Canonical adom-lbr JSON + KiCad symbol/footprint/3D. Used on the USB3-to-Ethernet Data-Only Molecule.",+ "tags": [+ "component",+ "ic",+ "tl331lv",+ "comparator",+ "adom-lbr",+ "usb3-ethernet-molecule"+ ],+ "component": {+ "mpn": "TL331LV",+ "manufacturer": "Texas Instruments",+ "category": "IC"+ },+ "dependencies": {},+ "hero": {+ "type": "billboard",+ "headline": "TL331LV",+ "subhead": "Comparator · SOT-23-5 · reversed inputs · adom-lbr JSON included",+ "screenshot": "screenshots/hero.png"+ },+ "files": [+ "README.md",+ "TL331LV.kicad_sym",+ "TL331LV.kicad_mod",+ "TL331LV.step",+ "TL331LV.glb",+ "TL331LV.adom-lbr.json"+ ],+ "author": {+ "name": "barrett-land",+ "email": "[email protected]"+ }+}