component
hgx3085eim
Public Unreviewedby Ray
HGSEMI RS-485 / RS-422 ICs, SOP-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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README
markdownHGX3085EIM
HGSEMI · RS-485 / RS-422 ICs · SOP-8
HGX3085EIM 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 a logic high if (A - B) ≥ -50mV and a logic low if (A - B) ≤ -200mV. RO is high-impedance when the receiver is disabled (RE high) and true fail-safe holds RO high when the differential inputs are open or shorted. |
| 2 | RE | input | Active-low receiver output enable (with hot-swap input structure). RO is enabled when RE is low and high-impedance when RE is high. Driving RE high while DE is low for >700ns places the device in low-power shutdown mode (ISHDN ≈ 0.05µA typ). |
| 3 | DE | input | Active-high driver output enable (with hot-swap input structure). Driver outputs A and B are active when DE is high and high-impedance when DE is low. Holding DE low with RE high enters low-power shutdown mode. |
| 4 | DI | input | Driver data input. With DE high, a logic low on DI forces A/Y low and B/Z high; a logic high on DI forces A/Y high and B/Z low. VIH ≥ 2V, VIL ≤ 0.8V, input current ±1µA. |
| 5 | GND | power_in | Ground reference for the transceiver. |
| 6 | A | bidirectional | Non-inverting receiver input and non-inverting driver output (half-duplex bus line A/Y). Absolute maximum bus voltage -7V to +12V; receiver differential threshold -200mV to -50mV; driver differential output ≥ 2.1V into 54Ω; ±16kV IEC 61000-4-2 ESD protection. |
| 7 | B | bidirectional | Inverting receiver input and inverting driver output (half-duplex bus line B/Z). Absolute maximum bus voltage -7V to +12V; receiver differential threshold -200mV to -50mV; driver differential output ≥ 2.1V into 54Ω; ±16kV IEC 61000-4-2 ESD protection. |
| 8 | VCC | power_in | Positive supply, 4.5V ≤ VCC ≤ 5.5V. Bypass to GND with a 0.1µF ceramic capacitor placed close to the pin. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HGSEMI |
| Package | SOP-8 |
| Category | Interface |
| Pins | 8 |
Ordering variants
HGX3085EIM/TRHGX3085EIMECM/TRHGX3085EIMEINHGX3085EIMECNHGX3085EIMM/TRHGX3085EIMECMM/TRHGX3085EIM8/TRHGX3085EIMECM8/TRHGX3085EIMEIDQ3/TRHGX3085EIMECDQ3/TRHGX3085EIMEIDQ2/TRHGX3085EIMECDQ2/TR
CAD (KiCad official)
- Symbol:
HGX3085EIM - 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 (None pp, sha256
f6d3ad97a8f240e8, 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).