SIT1027QT

@@ -0,0 +1,50 @@+# SIT1027QT++**SIT** · LIN Transceivers · SOP-8++SIT1027QT from SIT, in a SOP-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 | RXD | output | Receive data output to the MCU (open-drain, needs external pull-up). Reports the state of the LIN bus; also driven active LOW after a remote wake-up event to interrupt the microcontroller. |+| 2 | SLP_N | input | Sleep control input (active LOW). Controls the inhibit output and mode transitions: hold HIGH for tgotonorm to enter Normal mode, hold LOW for tgotosleep to enter Sleep mode. Also resets the wake-up source flag on TXD and wake-up request on RXD. Has an internal pull-down so a floating pin forces Sleep mode. |+| 3 | n.c. | unconnected | Not connected. Leave open (or tie to a convenient net per PCB preference). |+| 4 | TXD | input | Transmit data input from the MCU. LOW drives the LIN bus to the dominant state, HIGH releases it to the recessive state. Has an internal pull-down to GND so an unconnected TXD forces a defined level. |+| 5 | GND | power_in | Ground reference for the device. |+| 6 | LIN | bidirectional | LIN bus line I/O (single-wire, up to 20 kBd, 12V nominal). Includes an integrated ~30 kΩ pull-up to VBAT for slave-node operation; when used as a master node, an additional external pull-up (typically 1 kΩ) to VBAT through a series diode is required. |+| 7 | VBAT | power_in | Battery supply voltage input. Operating range 5.5V to 27V (12V automotive nominal). Undervoltage detection disables the driver below Vth(VBATL)L and re-enables above Vth(VBATL)H. |+| 8 | n.c. | unconnected | Not connected. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | SIT |+| Package | SOP-8 |+| Category | Interface |+| Pins | 8 |++## Ordering variants++Same part, different packaging or reel option.++- `SIT1027QT`+- `SIT1027QTK`++## CAD (KiCad official)++- Symbol: `SIT1027QT`+- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`+- 3D model: SOP-8 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [SIT datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589838816161923072) (20 pp, sha256 `554c411d0b8bbe3b`, retrieved 2026-08-17, tier: lcsc)+- **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/sit1027qt-datasheet.pdf)

@@ -0,0 +1,34 @@+{+  "slug": "sit1027qt",+  "version": "0.1.0",+  "type": "component",+  "description": "SIT LIN Transceivers, SOP-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.",+  "tags": [+    "component",+    "interface",+    "sit1027qt"+  ],+  "dependencies": {},+  "hero": {+    "type": "image",+    "path": "docs/hero.png"+  },+  "files": [+    "page.json",+    "README.md",+    "sit1027qt.kicad_sym",+    "sit1027qt.kicad_mod",+    "sit1027qt.glb",+    "sit1027qt.step",+    "sit1027qt.lbr",+    "docs/hero.png",+    "docs/sit1027qt-datasheet.pdf",+    "viewers/symbol.html",+    "viewers/footprint.html"+  ],+  "visibility": "public",+  "author": {+    "name": "Ray",+    "email": "[email protected]"+  }+}\ No newline at end of file