TJA1050

@@ -0,0 +1,52 @@+# TJA1050++**NXP Semiconductors** · High-speed CAN transceiver · SO-8++The physical-layer interface between a CAN controller and the CAN bus, in SO-8, and one of the most widely used CAN transceivers. It converts the logic-level TXD/RXD of a controller (an MCP2515, or an MCU's on-chip CAN) into the differential CANH/CANL signals on the bus and back, at up to 1 Mb/s. An S (silent) pin disables the transmitter so a node can listen without driving the bus, and the device tolerates bus faults and provides good EMC. It drives a full multi-node bus and runs from a single 5 V supply. Vref outputs half-supply for reference.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | TXD | input | Transmit data input from the CAN controller to the bus line drivers. LOW drives the bus to dominant, HIGH (or floating) leaves the bus recessive. Internal pull-up (~200 uA) to VCC; VIH >= 2.0 V, VIL <= 0.8 V. TXD dominant time-out (250-750 us) forces the bus back to recessive if held LOW too long. |+| 2 | GND | power_in | Device ground. All voltages in the datasheet are referenced to this pin. |+| 3 | VCC | power_in | Supply voltage, 4.75 V to 5.25 V. Typical supply current is 50 mA dominant / 5 mA recessive. Bypass with 100 nF close to the pin. |+| 4 | RXD | output | Receive data output; forwards the differential bus state to the CAN controller. LOW = dominant, HIGH = recessive. Drive capability IOH = -6 mA typ. at VRXD = 0.7*VCC, IOL = 8.5 mA typ. at VRXD = 0.45 V. |+| 5 | Vref | output | Reference voltage output at 0.5*VCC (0.45*VCC to 0.55*VCC) for use as a stable mid-supply reference to the CAN controller. Load current limited to +/-50 uA. |+| 6 | CANL | bidirectional | LOW-level CAN bus line. Driven toward GND (typ. 1.4 V) in the dominant state and biased to 0.5*VCC in the recessive state through internal 25 kOhm. Protected against ISO 7637 automotive transients (-200 V to +200 V) and short-circuits to +/-27 V (up to +40 V absolute max). |+| 7 | CANH | bidirectional | HIGH-level CAN bus line. Driven toward VCC (typ. 3.6 V) in the dominant state and biased to 0.5*VCC in the recessive state through internal 25 kOhm. Protected against ISO 7637 automotive transients (-200 V to +200 V) and short-circuits to +/-27 V (up to +40 V absolute max). |+| 8 | S | input | Mode select input. Tie to GND for high-speed (normal) mode; tie to VCC for silent mode (transmitter disabled, receiver still operational). Weak internal pull-down (~30 uA); if left floating the device defaults to high-speed mode, but grounding S is recommended for best EMI. VIH >= 2.0 V (silent), VIL <= 0.8 V (high-speed). |++## Key specifications++| Parameter | Value |+|---|---|+| Type | High-speed CAN transceiver |+| Bus speed | up to 1 Mb/s |+| Bus interface | CANH / CANL (differential) |+| Controller interface | TXD / RXD (logic level) |+| Modes | high-speed / silent (S pin) |+| Reference | Vref (0.5 x VCC) |+| Supply voltage | 4.75-5.25 V |+| Package | SO-8 |++## Ordering variants++- `TJA1050T (SO-8)`+- `TJA1050T/CM (SO-8, tape & reel)`++## CAD (KiCad official)++- Symbol: `TJA1050 (generated from datasheet; KiCad has no symbol)`+- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`+- 3D model: SOIC-8 (KiCad packages3D)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [NXP Semiconductors datasheet](https://www.nxp.com/docs/en/data-sheet/TJA1050.pdf) (18 pp, sha256 `f95c1ffa13e4d80e`, 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/tja1050-datasheet.pdf)

@@ -0,0 +1,35 @@+{+  "slug": "tja1050",+  "version": "0.1.0",+  "type": "component",+  "description": "NXP high-speed CAN transceiver, SO-8. Up to 1 Mb/s, differential bus, silent mode. The controller-to-bus interface. Datasheet-verified.",+  "tags": [+    "component",+    "interface",+    "can-bus",+    "can-transceiver",+    "so-8",+    "nxp"+  ],+  "dependencies": {},+  "hero": {+    "type": "image",+    "path": "docs/hero.png"+  },+  "files": [+    "page.json",+    "README.md",+    "tja1050.kicad_sym",+    "tja1050.kicad_mod",+    "tja1050.glb",+    "docs/hero.png",+    "docs/tja1050-datasheet.pdf",+    "viewers/symbol.html",+    "viewers/footprint.html"+  ],+  "visibility": "public",+  "author": {+    "name": "Ray",+    "email": "[email protected]"+  }+}\ No newline at end of file