SP3078EEN-L

@@ -0,0 +1,48 @@+# SP3078EEN-L++**MaxLinear** · RS-485 / RS-422 ICs · SOIC-8++SP3078EEN-L from MaxLinear, in a SOIC-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. CMOS-level logic output of the differential receiver comparing A vs B. VOH ≥ VCC-0.6V at IO=-1mA, VOL ≤ 0.4V at IO=1mA. Tri-stated when /RE is high; failsafe HIGH when bus is open, shorted, or idle-terminated. |+| 2 | /RE | input | Receiver Enable, active-low. Drive LOW to enable the receiver output RO; drive HIGH to tri-state RO. With /RE=VCC and DE=GND the device enters shutdown (ISHDN ≈ 0.05µA typ). Hot-swap glitch protection ensures no false bus assertion during power-up. |+| 3 | DE | input | Driver Enable, active-high. Drive HIGH to enable the differential driver onto A/B; drive LOW to place A and B into a high-impedance state. Hot-swap glitch protected. VIH ≥ 2V, VIL ≤ 0.8V, 100mV typical hysteresis. |+| 4 | DI | input | Driver Input. CMOS logic-level input that sets the polarity of the differential A/B outputs when DE is asserted. VIH ≥ 2V, VIL ≤ 0.8V, IIN ±1µA. High on DI drives A high and B low. |+| 5 | GND | power_in | Ground reference (0V) for both logic and bus sections. |+| 6 | A | bidirectional | Non-inverting RS-485/RS-422 bus pin. Driver output when DE=HIGH; receiver input when DE=LOW. Common-mode range -7V to +12V, ±15kV Air-Gap/HBM and ±8kV Contact ESD protected. 96kΩ minimum receiver input resistance (1/8 unit load). |+| 7 | B | bidirectional | Inverting RS-485/RS-422 bus pin. Driver output when DE=HIGH; receiver input when DE=LOW. Common-mode range -7V to +12V, ±15kV Air-Gap/HBM and ±8kV Contact ESD protected. 96kΩ minimum receiver input resistance (1/8 unit load). |+| 8 | VCC | power_in | Supply voltage input, +3.3V ±0.3V (absolute max +6V). Typical supply current 0.8mA (1.5mA max) at no load. Bypass locally to GND with a 0.1µF ceramic capacitor. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | MaxLinear |+| Package | SOIC-8 |+| Category | Interface |+| Pins | 8 |++## Ordering variants++- `SP3078EEN-LEN`+- `SP3078EEN-LEN-L`++## CAD (KiCad official)++- Symbol: `SP3078EEN-L`+- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`+- 3D model: SOIC-8 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [MaxLinear datasheet](docs/sp3078een-l-datasheet.pdf) (20 pp, sha256 `860dab706abedb6e`, retrieved 2026-08-17, tier: manufacturer)+- **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/sp3078een-l-datasheet.pdf)

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