ISO3086DWR

@@ -0,0 +1,56 @@+# ISO3086DWR++**Texas Instruments** · RS-485 / RS-422 ICs · SOIC-16-300mil++ISO3086DWR from Texas Instruments, in a SOIC-16-300mil. 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 | VCC1 | power_in | Logic-side supply. 3.15-3.6 V for 3.3-V operation or 4.5-5.5 V for 5-V operation. Decouple with local bypass capacitors to GND1. |+| 2 | GND1 | power_in | Logic-side ground return for VCC1. Pins 2, 7, and 8 are internally tied and must all be connected to the logic-side ground plane. |+| 3 | R | output | Receiver output (logic side). CMOS output driven by the isolated receiver comparator sensing bus pins A/B. Output current ±8 mA. |+| 4 | RE | input | Active-low receiver enable. Drive low (or leave open) to enable the receiver output R; drive high to place R in high-impedance. VIH ≥ 2 V, VIL ≤ 0.8 V. |+| 5 | DE | input | Driver enable. Drive high to enable the differential driver outputs Y/Z; drive low or leave open to place them in high-impedance. VIH ≥ 2 V, VIL ≤ 0.8 V. |+| 6 | D | input | Driver data input (logic side). CMOS-level input; state at D controls the differential state driven onto Y/Z when DE is asserted. |+| 7 | GND1 | power_in | Logic-side ground return for VCC1. Internally common with pins 2 and 8. |+| 8 | GND1 | power_in | Logic-side ground return for VCC1. Internally common with pins 2 and 7. |+| 9 | GND2 | power_in | Bus-side ground return for VCC2. Internally common with pins 10 and 15; isolated from GND1 by the 2500-Vrms isolation barrier. |+| 10 | GND2 | power_in | Bus-side ground return for VCC2. Internally common with pins 9 and 15. |+| 11 | Y | output | Driver noninverting output on the bus side (RS-485 full-duplex TX+). Drives differential pair Y/Z with up to ±60 mA and withstands −7 V to +12 V common-mode. |+| 12 | Z | output | Driver inverting output on the bus side (RS-485 full-duplex TX−). Complementary to Y; three-stated when DE is low. |+| 13 | B | input | Receiver inverting input on the bus side (RS-485 full-duplex RX−). Differential input range VID −12 V to +12 V, common-mode range −7 V to +12 V. |+| 14 | A | input | Receiver noninverting input on the bus side (RS-485 full-duplex RX+). Paired with B; fail-safe biased for bus open/short/idle. |+| 15 | GND2 | power_in | Bus-side ground return for VCC2. Internally common with pins 9 and 10. |+| 16 | VCC2 | power_in | Bus-side supply. 4.5-5.5 V for 5-V operation. Decouple with local bypass capacitors to GND2. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | SOIC-16-300mil |+| Category | Interface |+| Pins | 16 |++## Ordering variants++- `ISO3086DWRDW`+- `ISO3086DWRDWR`++## CAD (KiCad official)++- Symbol: `ISO3086DWR`+- Footprint: `Package_SO:SOIC-16_3.9x9.9mm_P1.27mm`+- 3D model: SOIC-16-300mil (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/iso3086dwr.pdf) (33 pp, sha256 `f568a60935325c4d`, 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/iso3086dwr-datasheet.pdf)

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