6N137

@@ -0,0 +1,51 @@+# 6N137++**onsemi** · High-speed logic optocoupler · PDIP-8++A high-speed optocoupler for isolating digital signals, in DIP-8. An input LED (anode/cathode) drives an internal photodiode and a logic-gate output stage, giving a clean open-collector logic output that keeps up to 10 Mbit/s, far faster than a phototransistor optocoupler like the PC817. An output enable pin (VE) gates the output and lets several share a bus. It is the standard way to cross an isolation barrier for a UART, SPI clock, encoder signal, or gate-drive command while blocking high voltage and breaking ground loops. Needs a pull-up on the open-collector output. Pin 4 is not connected.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | NC | unconnected | No internal connection. Leave floating or tie to ground per PCB layout preference. |+| 2 | ANODE | input | Anode of the input AlGaAs LED. Typical forward current IF = 5 mA (max 15 mA), VF ~1.4-1.75 V. Drive with a current-limiting resistor from the logic source. |+| 3 | CATHODE | input | Cathode of the input AlGaAs LED. Return path for the LED forward current; typically driven low by the source logic gate through a series resistor. |+| 5 | GND | power_in | Output-side ground reference. Must be well-decoupled to VCC (pin 8) with a 0.1 uF ceramic capacitor placed close to the device. |+| 6 | VO | output | Open-collector Schottky-clamped output. Requires an external pull-up resistor (typ. 350 Ω to VCC). Sinks up to 13 mA in the low state; propagation delay ~48 ns (10 MBd data rate). |+| 7 | VE | input | Enable input. When held high (or left open with internal pull-up considerations), the output responds to LED current. When pulled low, the output is disabled (held high). Tie to VCC if not used. |+| 8 | VCC | power_in | Output-side supply voltage, 4.5 V to 5.5 V (absolute max 7 V). Bypass to GND (pin 5) with a 0.1 uF ceramic capacitor placed close to the device. |++## Key specifications++| Parameter | Value |+|---|---|+| Type | High-speed logic optocoupler |+| Data rate | 10 Mbit/s |+| Input | LED (anode/cathode) |+| Output | open-collector logic (needs pull-up) |+| Enable | VE output-enable pin |+| Isolation | ~3750 Vrms |+| CTR/coupling | logic-level (not linear) |+| Package | PDIP-8 (pin 4 = NC) |++## Ordering variants++- `6N137 (PDIP-8)`+- `6N137S (SOIC-8, gull-wing)`++## CAD (KiCad official)++- Symbol: `Isolator:6N137`+- Footprint: `Package_DIP:DIP-8_W7.62mm`+- 3D model: DIP-8 (KiCad packages3D)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [onsemi datasheet](https://media.digikey.com/pdf/Data%20Sheets/Fairchild%20PDFs/6N137.pdf) (12 pp, sha256 `4926d748b1db9af4`, retrieved 2026-08-17, tier: manufacturer)+- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/6n137-datasheet.pdf)

@@ -0,0 +1,36 @@+{+  "slug": "6n137",+  "version": "0.1.0",+  "type": "component",+  "description": "onsemi high-speed logic-gate optocoupler, DIP-8. 10 Mbit/s, open-collector output with enable. Datasheet-verified.",+  "tags": [+    "component",+    "optocoupler",+    "isolator",+    "high-speed",+    "digital-isolation",+    "dip-8",+    "onsemi"+  ],+  "dependencies": {},+  "hero": {+    "type": "image",+    "path": "docs/hero.png"+  },+  "files": [+    "page.json",+    "README.md",+    "6n137.kicad_sym",+    "6n137.kicad_mod",+    "6n137.glb",+    "docs/hero.png",+    "docs/6n137-datasheet.pdf",+    "viewers/symbol.html",+    "viewers/footprint.html"+  ],+  "visibility": "public",+  "author": {+    "name": "Ray",+    "email": "[email protected]"+  }+}\ No newline at end of file