SN65HVD20DR

@@ -0,0 +1,51 @@+# SN65HVD20DR++**Texas Instruments** · RS-485 / RS-422 ICs · SOIC-8++SN65HVD20DR 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. Digital CMOS output that reflects the state of the differential receiver comparing bus lines A and B. |+| 2 | RE | input | Receiver enable, active low. Drive low to enable the receiver output R; drive high to place R in a high-impedance state. |+| 3 | DE | input | Driver enable, active high. Drive high to enable the differential driver outputs A and B; drive low to place the driver in a high-impedance state. |+| 4 | D | input | Driver data input. Digital CMOS input; the logic level here determines the differential state driven on the A/B bus when DE is high. |+| 5 | GND | power_in | Local device ground / reference potential. |+| 6 | A | bidirectional | RS-485 differential bus line A (non-inverting). Driver output or receiver input, complementary to B. Extended common-mode range -20 V to 25 V. |+| 7 | B | bidirectional | RS-485 differential bus line B (inverting). Driver output or receiver input, complementary to A. Extended common-mode range -20 V to 25 V. |+| 8 | VCC | power_in | Supply voltage input, 4.5 V to 5.5 V. Bypass locally with a 100 nF ceramic capacitor to GND. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | SOIC-8 |+| Category | Interface |+| Pins | 8 |++## Ordering variants++Same part, different packaging or reel option.++- `SN65HVD20DR`+- `SN65HVD20DRD`+- `SN65HVD20DRP`++## CAD (KiCad official)++- Symbol: `SN65HVD20DR`+- 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/sn65hvd20.pdf) (37 pp, sha256 `7a91efb110506aa4`, 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/sn65hvd20dr-datasheet.pdf)

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