MAX485ESA

@@ -0,0 +1,47 @@+# MAX485ESA++**UMW** · RS-485 / RS-422 ICs · SOP-8++MAX485ESA from UMW, in a SOP-8. Pinout and pin descriptions extracted from the datasheet (via LCSC) by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | RO | output | Receiver Output. Digital CMOS output of the RS-485 receiver. Logic-high when A-B >= +0.2V, logic-low when A-B <= -0.2V, and high-impedance when RE is high (receiver disabled). VOH >= 3.5V at IO=-4mA, VOL <= 0.4V at IO=4mA. |+| 2 | ~RE | input | Receiver Output Enable, active-low. Drive low to enable receiver (RO active), drive high to place RO into high-impedance state. CMOS logic input referenced to VCC (VIH >= 2V, VIL <= 0.8V, IIN = ±2µA max). |+| 3 | DE | input | Driver Output Enable, active-high. Drive high to enable the RS-485 driver outputs A and B, drive low to place A and B into high-impedance. CMOS logic input (VIH >= 2V, VIL <= 0.8V, IIN = ±2µA max). |+| 4 | DI | input | Driver Input. CMOS logic input carrying the transmit data to be driven onto the RS-485 differential bus. When DE=1: DI=1 forces A=1/B=0, DI=0 forces A=0/B=1. VIH >= 2V, VIL <= 0.8V, IIN = ±2µA max. |+| 5 | GND | power_in | Ground reference for the device. Must be tied to system ground. |+| 6 | A | bidirectional | Non-inverting RS-485/RS-422 differential bus line. Acts as a driver output when DE=1 and as a receiver input when RE is low. Absolute range -8V to +12.5V; common-mode range -7V to +12V; receiver input resistance >= 12kΩ. |+| 7 | B | bidirectional | Inverting RS-485/RS-422 differential bus line. Acts as a driver output when DE=1 and as a receiver input when RE is low. Absolute range -8V to +12.5V; common-mode range -7V to +12V; receiver input resistance >= 12kΩ. |+| 8 | VCC | power_in | Positive supply input, 5V ±5%. No-load supply current typically 500µA (DE=VCC) or 300µA (DE=0, RE tied high or low). Absolute maximum 7V. Bypass to GND with a 0.1µF ceramic close to the pin. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | UMW |+| Package | SOP-8 |+| Category | Interface |+| Pins | 8 |++## Ordering variants++- `MAX485ESAESA`++## CAD (KiCad official)++- Symbol: `MAX485ESA`+- 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:** [UMW datasheet](https://datasheet.lcsc.com/datasheet/pdf/ecf29a5309225a8937bcd2e9d434361d.pdf) (9 pp, sha256 `e4e2116cdfbdf558`, 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/max485esa-datasheet.pdf)

@@ -0,0 +1,34 @@+{+  "slug": "max485esa",+  "version": "0.1.0",+  "type": "component",+  "description": "UMW RS-485 / RS-422 ICs, SOP-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.",+  "tags": [+    "component",+    "interface",+    "max485esa"+  ],+  "dependencies": {},+  "hero": {+    "type": "image",+    "path": "docs/hero.png"+  },+  "files": [+    "page.json",+    "README.md",+    "max485esa.kicad_sym",+    "max485esa.kicad_mod",+    "max485esa.glb",+    "max485esa.step",+    "max485esa.lbr",+    "docs/hero.png",+    "docs/max485esa-datasheet.pdf",+    "viewers/symbol.html",+    "viewers/footprint.html"+  ],+  "visibility": "public",+  "author": {+    "name": "Ray",+    "email": "[email protected]"+  }+}\ No newline at end of file