SN75176M

@@ -0,0 +1,55 @@+# SN75176M++**HGSEMI** · RS-485 / RS-422 ICs · SOP-8++SN75176M 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 = high if (A-B) ≥ -50 mV, RO = low if (A-B) ≤ -200 mV. When /RE is high RO is high-impedance. Fail-safe drives RO high when the bus is open or shorted. |+| 2 | /RE | input | Receiver output enable, active low. RO is enabled when /RE = low and Hi-Z when /RE = high. If /RE = high and DE = low, the device enters low-power shutdown mode (I_SHDN ≈ 20 µA typ). |+| 3 | DE | input | Driver output enable, active high. When DE = high the differential driver drives A/B; when DE = low the driver outputs are high-impedance. /RE = high together with DE = low puts the device in shutdown. |+| 4 | DI | input | Driver (transmit) data input. With DE = high, DI = low forces A low / B high, and DI = high forces A high / B low. V_IH ≥ 2.0 V, V_IL ≤ 0.8 V, hysteresis ~100 mV. |+| 5 | GND | power_in | Device ground reference for both driver and receiver. |+| 6 | A | bidirectional | Non-inverting differential bus pin. Serves as the non-inverting receiver input and the non-inverting driver output on the RS-485 bus. ±8 kV IEC 61000-4-2 contact / air ESD protected; withstands ±13 V common-mode. |+| 7 | B | bidirectional | Inverting differential bus pin. Serves as the inverting receiver input and the inverting driver output on the RS-485 bus. ±8 kV IEC 61000-4-2 contact / air ESD protected; withstands ±13 V common-mode. |+| 8 | VCC | power_in | Positive supply rail, 4.5 V ≤ VCC ≤ 5.5 V (7 V absolute max). Bypass with a 0.1 µF ceramic near the pin. Typical Icc ≈ 500 µA, shutdown ≈ 20 µA. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | HGSEMI |+| Package | SOP-8 |+| Category | Interface |+| Pins | 8 |++## Ordering variants++Same part, different packaging or reel option.++- `SN75176M/TR`+- `SN75176MSN65176M/TR`+- `SN75176N`+- `SN75176MSN65176N`+- `SN75176MM/TR`+- `SN75176MSN65176MM/TR`++## CAD (KiCad official)++- Symbol: `SN75176M`+- 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/sn75176m-datasheet.pdf) (13 pp, sha256 `8e5fdac042fb5787`, 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/sn75176m-datasheet.pdf)

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