MAX3485EIM

@@ -0,0 +1,59 @@+# MAX3485EIM++**HGSEMI** · RS-485 / RS-422 ICs · SOP-8++MAX3485EIM from HGSEMI, 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. When /RE is low, RO is high if (A-B) >= +200 mV and low if (A-B) <= -200 mV. High-impedance when /RE is high or the device is in shutdown. |+| 2 | /RE | input | Receiver output enable, active low. Low enables RO; high tri-states RO. When /RE is high and DE is low, the device enters low-power shutdown mode. |+| 3 | DE | input | Driver output enable, active high. High enables the differential driver on A/B; low tri-states the driver. When /RE is high and DE is low the device enters low-power shutdown mode. |+| 4 | DI | input | Driver input. With DE high, a low on DI forces A low and B high; a high on DI forces A high and B low. VIH >= 2.0 V, VIL <= 0.8 V (3.3 V logic). |+| 5 | GND | power_in | Ground reference for the device. Connect to the common system ground. |+| 6 | A | bidirectional | Non-inverting RS-485 bus pin: receiver non-inverting input and driver non-inverting output. Absolute input range -7 V to +13 V; ±15 kV HBM ESD. |+| 7 | B | bidirectional | Inverting RS-485 bus pin: receiver inverting input and driver inverting output. Absolute input range -7 V to +13 V; ±15 kV HBM ESD. |+| 8 | VCC | power_in | Supply pin. Operating range 3.0 V to 3.6 V (nominal 3.3 V). Bypass locally with a 0.1 µF ceramic capacitor to GND. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | HGSEMI |+| Package | SOP-8 |+| Category | Interface |+| Pins | 8 |++## Ordering variants++- `MAX3485EIM/TR`+- `MAX3485EIMMAX3485ECM/TR`+- `MAX3485EIMMAX3485EIN`+- `MAX3485EIMMAX3485ECN`+- `MAX3485EIMM/TR`+- `MAX3485EIMMAX3485ECMM/TR`+- `MAX3485EIMMAX3485EIDQ/TR`+- `MAX3485EIMMAX3485EIDQ3/TR`+- `MAX3485EIMMAX3485ECDQ/TR`+- `MAX3485EIMMAX3485ECDQ3/TR`+- `MAX3485EIM8/TR`+- `MAX3485EIMMAX3485ECM8/TR`++## CAD (KiCad official)++- Symbol: `MAX3485EIM`+- 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:** [HGSEMI datasheet](docs/max3485eim-datasheet.pdf) (17 pp, sha256 `2c206ef20fa97d7e`, retrieved 2026-08-17, tier: lcsc)+- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.+- **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/max3485eim-datasheet.pdf)

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