THVD1400DR

@@ -0,0 +1,50 @@+# THVD1400DR++**Texas Instruments** · Interface - Specialized · SOIC-8++THVD1400DR 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 driven by the differential receiver comparing bus pins A and B. VOH ≥ VCC-0.4 V at IOH = -4 mA; VOL ≤ 0.4 V at IOL = 4 mA. |+| 2 | RE | input | Receiver enable, active low. Digital input with internal 2-MΩ pull-up to VCC. When low, the receiver is enabled and drives pin R; when high, R goes to high-impedance. |+| 3 | DE | input | Driver enable, active high. Digital input with internal 2-MΩ pull-down to GND. When high, the driver is enabled and drives bus pins A and B; when low, A/B go to high-impedance. |+| 4 | D | input | Driver data input. Digital CMOS input; logic level driven onto the differential bus (A/B) when DE is high. VIH ≥ 2 V, VIL ≤ 0.8 V. |+| 5 | GND | power_in | Device ground reference. |+| 6 | A | bidirectional | Non-inverting RS-485 differential bus I/O port (complementary to B). Bus voltage range -7 V to +12 V; ±12-kV IEC 61000-4-2 contact ESD protection; ±16-V absolute-max fault voltage; 1/8 unit load. |+| 7 | B | bidirectional | Inverting RS-485 differential bus I/O port (complementary to A). Bus voltage range -7 V to +12 V; ±12-kV IEC 61000-4-2 contact ESD protection; ±16-V absolute-max fault voltage; 1/8 unit load. |+| 8 | VCC | power_in | Supply voltage input, 3 V to 5.5 V (nominal 3.3 V or 5 V). Quiescent supply current 1.5 mA typical; standby current < 1 µA. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | SOIC-8 |+| Category | Comm/UART |+| Pins | 8 |++## Ordering variants++- `THVD1400DRD`+- `THVD1400DRDR`+- `THVD1400DRDRL`+- `THVD1400DRDRLR`++## CAD (KiCad official)++- Symbol: `THVD1400DR`+- 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/thvd1400.pdf) (33 pp, sha256 `5ba9785d9fb8dc87`, 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/thvd1400dr-datasheet.pdf)

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