GM3485E

@@ -0,0 +1,47 @@+# GM3485E++**GATEMODE** · RS-485 / RS-422 ICs · SOP-8++GM3485E from GATEMODE, 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 and (A-B) >= -50mV, RO is high; when (A-B) <= -200mV, RO is low. CMOS logic-level output referenced to VCC. |+| 2 | /RE | input | Receiver Output Enable (active-low). Drive /RE low to enable RO; drive /RE high to place RO in high-impedance. Driving /RE high together with DE low enters low-power shutdown mode. |+| 3 | DE | input | Driver Output Enable (active-high). Drive DE high to enable the driver outputs (A, B); driver outputs are high-impedance when DE is low. Driving /RE high with DE low enters low-power shutdown mode. |+| 4 | DI | input | Driver Input. With DE high, a low on DI forces the non-inverting output (A) low and the inverting output (B) high; a high on DI forces A high and B low. Input hysteresis is typically 100mV. |+| 5 | GND | power_in | Ground reference for the device. |+| 6 | A | bidirectional | Non-inverting receiver input and non-inverting driver output for the RS-485/RS-422 bus. ±15kV HBM ESD protected. Receiver input impedance 12kΩ (1-unit load); driver output voltage rating ±13V. |+| 7 | B | bidirectional | Inverting receiver input and inverting driver output for the RS-485/RS-422 bus. ±15kV HBM ESD protected. Receiver input impedance 12kΩ (1-unit load); driver output voltage rating ±13V. |+| 8 | VCC | power_in | Positive supply voltage, 3.0V to 5.5V. Bypass to GND with a 0.1µF ceramic capacitor. Supply current typically 0.5mA (unloaded); 20µA in shutdown mode. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | GATEMODE |+| Package | SOP-8 |+| Category | Interface |+| Pins | 8 |++## Ordering variants++- `GM3485E`++## CAD (KiCad official)++- Symbol: `GM3485E`+- 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:** [GATEMODE datasheet](docs/gm3485e-datasheet.pdf) (12 pp, sha256 `eaf2206839d9d7c7`, 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/gm3485e-datasheet.pdf)

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