UM3085EESA

@@ -0,0 +1,50 @@+# UM3085EESA++**Union Semiconductor** · RS-485 / RS-422 ICs · SOP-8++UM3085EESA from Union Semiconductor, in a SOP-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 | RO | output | Receiver Output. If A-B > -50 mV, RO is high; if A-B < -200 mV, RO is low. High-Z in shutdown mode. |+| 2 | ~{RE} | input | Receiver Output Enable (active low). Drive RE low to enable the receiver (RO active); RO is high impedance when RE is high. Drive RE high and DE low to enter low-power shutdown mode. |+| 3 | DE | input | Driver Enable (active high). Drive DE high to enable the driver outputs (A, B); outputs are high impedance when DE is low. Drive RE high and DE low to enter low-power shutdown mode. |+| 4 | DI | input | Driver Input. A low on DI forces output A low and output B high; a high on DI forces output A high and output B low. Has 100 mV input hysteresis on UM3085E. |+| 5 | GND | power_in | Ground reference (0 V). |+| 6 | A | bidirectional | Non-inverting Receiver Input and Non-inverting Driver Output (RS-485 differential line A). Input range -7 V to +12 V common-mode; ±15 kV HBM / IEC61000-4-2 air-gap ESD protected. |+| 7 | B | bidirectional | Inverting Receiver Input and Inverting Driver Output (RS-485 differential line B). Input range -7 V to +12 V common-mode; ±15 kV HBM / IEC61000-4-2 air-gap ESD protected. |+| 8 | VCC | power_in | Power Supply for RS-485 transceiver. Nominal +5 V ±5% (absolute max +7 V). Typical supply current 300 µA unloaded, 2 nA in shutdown. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Union Semiconductor |+| Package | SOP-8 |+| Category | Interface |+| Pins | 8 |++## Ordering variants++- `UM3085EESA`+- `UM3085EESAUM3088EESA`+- `UM3085EESAUM3085EEPA`+- `UM3085EESAUM3088EEPA`++## CAD (KiCad official)++- Symbol: `UM3085EESA`+- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`+- 3D model: SOP-8 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Union Semiconductor datasheet](docs/um3085eesa-datasheet.pdf) (14 pp, sha256 `5d1b6bed27594621`, retrieved 2026-08-17, tier: lcsc)+- **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/um3085eesa-datasheet.pdf)

@@ -0,0 +1,34 @@+{+  "slug": "um3085eesa",+  "version": "0.1.0",+  "type": "component",+  "description": "Union Semiconductor RS-485 / RS-422 ICs, SOP-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.",+  "tags": [+    "component",+    "interface",+    "um3085eesa"+  ],+  "dependencies": {},+  "hero": {+    "type": "image",+    "path": "docs/hero.png"+  },+  "files": [+    "page.json",+    "README.md",+    "um3085eesa.kicad_sym",+    "um3085eesa.kicad_mod",+    "um3085eesa.glb",+    "um3085eesa.step",+    "um3085eesa.lbr",+    "docs/hero.png",+    "docs/um3085eesa-datasheet.pdf",+    "viewers/symbol.html",+    "viewers/footprint.html"+  ],+  "visibility": "public",+  "author": {+    "name": "Ray",+    "email": "[email protected]"+  }+}\ No newline at end of file