SIT1051AT

@@ -0,0 +1,49 @@+# SIT1051AT++**SIT** · CAN ICs · SOP-8++SIT1051AT 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 | TXD | input | Transmit data input from the CAN controller. Logic low drives the bus dominant; logic high (or floating, internally biased high) leaves the bus recessive. VIH ≥ 2V, VIL ≤ 0.8V for the SIT1051AT variant (5V logic). |+| 2 | GND | power_in | Device ground reference. All voltage references are with respect to this pin. |+| 3 | VCC | power_in | 5V supply for the transceiver core and CAN bus drivers. Operating range 4.5V to 5.5V; absolute max -0.3V to 7V. Includes undervoltage protection. |+| 4 | RXD | output | Receive data output to the CAN controller. Push-pull output referenced to VCC (SIT1051AT variant). Low for dominant bus, high for recessive. IOH = -3 mA typ, IOL = 5 mA typ. |+| 5 | N.C. | unconnected | No internal connection on the SIT1051AT variant. On sibling variants this pin is used as EN (SIT1051AT/E, shutdown-mode enable, active low) or VIO (SIT1051AT/3, 3.3V I/O supply for level translation). |+| 6 | CANL | bidirectional | Low-side CAN bus I/O. Differential complement to CANH. Dominant output typ 1.5V, recessive ~0.5·VCC. Withstands -70V to +70V continuous; input resistance 15 kΩ typ. |+| 7 | CANH | bidirectional | High-side CAN bus I/O. Differential complement to CANL. Dominant output typ 3.5V, recessive ~0.5·VCC. Withstands -70V to +70V continuous; input resistance 15 kΩ typ. |+| 8 | S | input | Mode select input. Low = high-speed (normal) mode with active bus driver; high = silent (listen-only) mode where the transmitter is disabled but RXD still reports bus activity. Internally biased low if left floating. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | SIT |+| Package | SOP-8 |+| Category | Comm/UART |+| Pins | 8 |++## Ordering variants++- `SIT1051AT`+- `SIT1051AT/E`+- `SIT1051AT/3`++## CAD (KiCad official)++- Symbol: `SIT1051AT`+- 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](docs/sit1051at-datasheet.pdf) (19 pp, sha256 `1de7e49a0562374d`, 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/sit1051at-datasheet.pdf)

@@ -0,0 +1,34 @@+{+  "slug": "sit1051at",+  "version": "0.1.0",+  "type": "component",+  "description": "SIT CAN ICs, SOP-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.",+  "tags": [+    "component",+    "comm-uart",+    "sit1051at"+  ],+  "dependencies": {},+  "hero": {+    "type": "image",+    "path": "docs/hero.png"+  },+  "files": [+    "page.json",+    "README.md",+    "sit1051at.kicad_sym",+    "sit1051at.kicad_mod",+    "sit1051at.glb",+    "sit1051at.step",+    "sit1051at.lbr",+    "docs/hero.png",+    "docs/sit1051at-datasheet.pdf",+    "viewers/symbol.html",+    "viewers/footprint.html"+  ],+  "visibility": "public",+  "author": {+    "name": "Ray",+    "email": "[email protected]"+  }+}\ No newline at end of file