THVD1450DR

@@ -0,0 +1,52 @@+# THVD1450DR++**Texas Instruments** · RS-485 / RS-422 ICs · SOIC-8++THVD1450DR from Texas Instruments, in a SOIC-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 | R | output | Receive data output. CMOS logic-level output driven from the RS-485 bus differential receiver (A-B). High-impedance when RE is deasserted (high). |+| 2 | RE | input | Receiver enable, active low. Drive low to enable the receiver output R; drive high to place R in Hi-Z. 2-MΩ internal pull-up so the pin defaults to disabled if left floating. |+| 3 | DE | input | Driver enable, active high. Drive high to enable the differential driver onto the A/B bus; drive low to place the driver in Hi-Z. 2-MΩ internal pull-down so the driver defaults to disabled if left floating. |+| 4 | D | input | Driver data input. CMOS logic-level input; drives the differential A/B outputs when DE is high. |+| 5 | GND | power_in | Device ground reference (0 V). |+| 6 | A | bidirectional | RS-485 differential bus I/O, non-inverting (A). Complementary to B. Withstands ±18 V bus fault and ±18 kV IEC 61000-4-2 contact ESD to GND. |+| 7 | B | bidirectional | RS-485 differential bus I/O, inverting (B). Complementary to A. Withstands ±18 V bus fault and ±18 kV IEC 61000-4-2 contact ESD to GND. |+| 8 | VCC | power_in | Supply voltage input, 3.3 V to 5 V nominal (3.0-5.5 V operating). Decouple to GND with a 100-nF ceramic capacitor placed close to the pin. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | SOIC-8 |+| Category | Interface |+| Pins | 8 |++## Ordering variants++- `THVD1450DRDR`+- `THVD1450DRD`+- `THVD1450DRDGKR`+- `THVD1450DRDGK`+- `THVD1450DRDRBR`+- `THVD1450DRDRBT`++## CAD (KiCad official)++- Symbol: `THVD1450DR`+- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`+- 3D model: SOIC-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/thvd1450.pdf) (54 pp, sha256 `58ecc4cc07dd1d32`, 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/thvd1450dr-datasheet.pdf)

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