SN65HVD34DR

@@ -0,0 +1,54 @@+# SN65HVD34DR++**Texas Instruments** · RS-485/RS-422 ICs · SOIC-14++SN65HVD34DR from Texas Instruments, in a SOIC-14. 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 | NC | unconnected | No internal connection; must be left floating. |+| 2 | R | output | Receive data output (digital output). Driven by the differential receiver comparing bus inputs A and B. |+| 3 | RE | input | Receiver enable, active low (digital input). Drive low to enable the receiver; drive high to place the R output in high-impedance. |+| 4 | DE | input | Driver enable, active high (digital input). Drive high to enable the driver outputs Y and Z; drive low to place them in high-impedance. |+| 5 | D | input | Driver data input (digital input). Logic level presented at D drives the differential Y/Z outputs when DE is asserted. |+| 6 | GND | power_in | Local device ground / reference potential. Pins 6 and 7 are connected together internally. |+| 7 | GND | power_in | Local device ground / reference potential. Pins 6 and 7 are connected together internally. |+| 8 | NC | unconnected | No internal connection; must be left floating. |+| 9 | Y | output | Non-inverting driver bus output (complementary to Z). Together with Z forms the differential RS-485/RS-422 transmit pair. |+| 10 | Z | output | Inverting driver bus output (complementary to Y). Together with Y forms the differential RS-485/RS-422 transmit pair. |+| 11 | B | input | Inverting receiver bus input (complementary to A). Together with A forms the differential RS-485/RS-422 receive pair. |+| 12 | A | input | Non-inverting receiver bus input (complementary to B). Together with B forms the differential RS-485/RS-422 receive pair. |+| 13 | VCC | power_in | 3-V to 3.6-V supply input. Pins 13 and 14 are connected together internally; both must be tied to the supply rail and decoupled. |+| 14 | VCC | power_in | 3-V to 3.6-V supply input. Pins 13 and 14 are connected together internally; both must be tied to the supply rail and decoupled. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | SOIC-14 |+| Category | Comm/UART |+| Pins | 14 |++## Ordering variants++- `SN65HVD34DRD`+- `SN65HVD34DRRHL`++## CAD (KiCad official)++- Symbol: `SN65HVD34DR`+- Footprint: `Package_SO:SOIC-14_3.9x8.7mm_P1.27mm`+- 3D model: SOIC-14 (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/sn65hvd34.pdf) (47 pp, sha256 `4f90059e9caf3d07`, 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/sn65hvd34dr-datasheet.pdf)

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