THVD8000

@@ -0,0 +1,51 @@+# THVD8000++**Texas Instruments** · RS-485 transceiver · SOT-23-8++RS-485 transceiver that modulates the data onto an FSK carrier, so the differential signal can share a wire pair that also carries DC power or an existing bus, and a simple capacitor couples it on and off. That lets a network run data and power over the same two wires, cutting cabling in building and industrial systems. An external resistor at F_SET sets the carrier frequency, and MODE selects operation. It behaves like a standard RS-485 transceiver on the logic side (D, R).++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | R | output | Receive data output. CMOS digital output that recovers demodulated data from the RS-485 bus (OOK-demodulated). VOH ≥ VCC−0.4 V @ IOH = −4 mA; VOL ≤ 0.4 V @ IOL = 4 mA. High-Z when MODE = high (transmit mode). |+| 2 | MODE | input | Transmit/receive mode selection digital input. Low = receive mode; High = transmit mode. Internal 2-MΩ pull-down to GND (defaults to receive if left floating). |+| 3 | F_SET | input | Carrier frequency selection analog input. Connect a resistor RF_SET (1.5 kΩ to 80 kΩ) from this pin to GND to set the OOK carrier frequency f0 (125 kHz to 5 MHz). Recommended load capacitance ≤ 100 pF. |+| 4 | D | input | Driver data input. CMOS logic input carrying the transmit data that will be OOK-modulated onto the A/B bus. Internal 2-MΩ pull-up to VCC. VIH ≥ 2 V, VIL ≤ 0.8 V. |+| 5 | GND | power_in | Device ground reference for supply, logic, and bus circuits. |+| 6 | A | bidirectional | RS-485 differential bus I/O port A (complementary to B). Operational common-mode range −7 V to 12 V; withstands ±18-V DC fault and ±16-kV HBM ESD. Driver short-circuit current limited to ±250 mA. |+| 7 | B | bidirectional | RS-485 differential bus I/O port B (complementary to A). Operational common-mode range −7 V to 12 V; withstands ±18-V DC fault and ±16-kV HBM ESD. Driver short-circuit current limited to ±250 mA. |+| 8 | VCC | power_in | Device supply, 3.0 V to 5.5 V (nominal 3.3 V to 5 V). Absolute maximum 7 V. Decouple with a local ceramic capacitor near the pin. |++## Key specifications++| Parameter | Value |+|---|---|+| Type | RS-485 transceiver with FSK modulation |+| Feature | Data over DC power / shared pair (capacitive coupling) |+| Carrier | Set by F_SET resistor |+| Logic side | Driver (D) + receiver (R) |+| Mode | MODE pin |+| Supply | 3.0-5.5 V |+| Package | SOT-23-8 |++## Ordering variants++- `THVD8000DDFR (SOT-23-8)`+- `THVD8010DDFR (higher data rate)`++## CAD (KiCad official)++- Symbol: `Interface_UART:THVD8000 (KiCad official)`+- Footprint: `Package_TO_SOT_SMD:SOT-23-8`+- 3D model: SOT-23-8 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/lit/ds/symlink/thvd8000.pdf) (28 pp, sha256 `2c65cc099691c62c`, 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/thvd8000-datasheet.pdf)

@@ -0,0 +1,38 @@+{+  "slug": "thvd8000",+  "version": "0.1.0",+  "type": "component",+  "description": "TI RS-485 transceiver with FSK modulation, SOT-23-8. Carries data over DC power or shared lines. Datasheet-verified.",+  "tags": [+    "component",+    "interface",+    "rs-485",+    "fsk",+    "power-line",+    "sot-23-8",+    "texas-instruments"+  ],+  "dependencies": {},+  "hero": {+    "type": "image",+    "path": "docs/hero.png"+  },+  "files": [+    "page.json",+    "README.md",+    "thvd8000.kicad_sym",+    "thvd8000.kicad_mod",+    "thvd8000.glb",+    "thvd8000.step",+    "thvd8000.lbr",+    "docs/hero.png",+    "docs/thvd8000-datasheet.pdf",+    "viewers/symbol.html",+    "viewers/footprint.html"+  ],+  "visibility": "public",+  "author": {+    "name": "Ray",+    "email": "[email protected]"+  }+}\ No newline at end of file