component
UM3483EESA
Public Made by Adomby adom
Union Semiconductor RS-485 / RS-422 ICs, SOP-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.md+14@@ -39,6 +39,20 @@ UM3483EESA from Union Semiconductor, in a SOP-8. Pinout and pin descriptions ext - Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm` - 3D model: SOP-8 (KiCad packages3D, STEP) +## 3D model downloads++Two STEP files. Same geometry, different body top:++| File | Size | Use it when |+|---|---|---|+| [`um3483eesa.step`](um3483eesa.step) | 122 KB | You want the bare part, or you mark your own boards. |+| [`um3483eesa-etched.step`](um3483eesa-etched.step) | 2.3 MB | You want the part with `UM3483EESA` already on it. |++The marking in the etched file is real recessed geometry cut into the solid, not a+texture or a decal: 569 faces against 147 in the bare model. It+survives export, section views, and rendering in any CAD tool, and it drops straight+into KiCad or Fusion with no extra setup.+ ## Provenance Data extracted from the manufacturer datasheet, not a distributor listing:
package.json+1−1@@ -1,6 +1,6 @@ { "slug": "um3483eesa",- "version": "0.1.0",+ "version": "0.2.0", "type": "component", "description": "Union Semiconductor RS-485 / RS-422 ICs, SOP-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.", "tags": [
page.json+11−11@@ -4,7 +4,7 @@ "slug": "um3483eesa", "title": "UM3483EESA", "brief": "Union Semiconductor RS-485 / RS-422 ICs, SOP-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.",- "version": "0.1.0",+ "version": "0.2.0", "license": "CC-BY-SA-4.0", "tags": [ "component",@@ -34,13 +34,13 @@ "number": "1", "name": "RO", "type": "output",- "description": "Receiver Output. CMOS logic-level output of the RS-485 receiver. VOH \u2265 VCC-1.5V at IOUT=-1.5mA; VOL \u2264 0.4V at IOUT=2.5mA. High-impedance when /RE is high; fail-safe high when inputs are open, shorted, or idle."+ "description": "Receiver Output. CMOS logic-level output of the RS-485 receiver. VOH ≥ VCC-1.5V at IOUT=-1.5mA; VOL ≤ 0.4V at IOUT=2.5mA. High-impedance when /RE is high; fail-safe high when inputs are open, shorted, or idle." }, { "number": "2", "name": "/RE", "type": "input",- "description": "Receiver Output Enable (active low). Drive low to enable the receiver output RO; drive high to place RO in high-impedance. Combined with DE=low, forces the device into low-power shutdown (ISHDN = 1\u00b5A)."+ "description": "Receiver Output Enable (active low). Drive low to enable the receiver output RO; drive high to place RO in high-impedance. Combined with DE=low, forces the device into low-power shutdown (ISHDN = 1µA)." }, { "number": "3",@@ -52,7 +52,7 @@ "number": "4", "name": "DI", "type": "input",- "description": "Driver Input. CMOS logic-level input to the RS-485 driver. VIH \u2265 2.0V, VIL \u2264 0.8V. Logic level on DI is transmitted differentially onto A/B when DE is high."+ "description": "Driver Input. CMOS logic-level input to the RS-485 driver. VIH ≥ 2.0V, VIL ≤ 0.8V. Logic level on DI is transmitted differentially onto A/B when DE is high." }, { "number": "5",@@ -64,19 +64,19 @@ "number": "6", "name": "A", "type": "bidirectional",- "description": "Non-inverting differential RS-485 bus line. Driver output when DE=high, receiver input when /RE=low. Common-mode operating range -7V to +12V; \u00b115kV HBM / \u00b115kV IEC61000-4-2 air-gap / \u00b18kV IEC61000-4-2 contact ESD protected."+ "description": "Non-inverting differential RS-485 bus line. Driver output when DE=high, receiver input when /RE=low. Common-mode operating range -7V to +12V; ±15kV HBM / ±15kV IEC61000-4-2 air-gap / ±8kV IEC61000-4-2 contact ESD protected." }, { "number": "7", "name": "B", "type": "bidirectional",- "description": "Inverting differential RS-485 bus line. Driver output when DE=high, receiver input when /RE=low. Common-mode operating range -7V to +12V; \u00b115kV HBM / \u00b115kV IEC61000-4-2 air-gap / \u00b18kV IEC61000-4-2 contact ESD protected."+ "description": "Inverting differential RS-485 bus line. Driver output when DE=high, receiver input when /RE=low. Common-mode operating range -7V to +12V; ±15kV HBM / ±15kV IEC61000-4-2 air-gap / ±8kV IEC61000-4-2 contact ESD protected." }, { "number": "8", "name": "VCC", "type": "power_in",- "description": "Positive supply, +3V to +5.5V operating range (+7V absolute max). Typical operating supply current 300\u00b5A (no load). Bypass with a local decoupling capacitor to GND."+ "description": "Positive supply, +3V to +5.5V operating range (+7V absolute max). Typical operating supply current 300µA (no load). Bypass with a local decoupling capacitor to GND." } ], "provenance": {@@ -150,9 +150,9 @@ "docs/hero.png", "docs/um3483eesa-datasheet.pdf", "viewers/symbol.html",- "viewers/footprint.html"+ "viewers/footprint.html",+ "pads.json" ],- "visibility": {- "public": true- }+ "visibility": "public",+ "description": "Union Semiconductor RS-485 / RS-422 ICs, SOP-8. Datasheet-verified pinout, KiCad symbol/footprint/3D." }