component
65hvd78eim
Public Unreviewedby Ray
HGSEMI RS-485 / RS-422 ICs, SOIC-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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README
markdown65HVD78EIM
HGSEMI · RS-485 / RS-422 ICs · SOIC-8
65HVD78EIM from HGSEMI, 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. When /RE is low: if (A-B) >= -50mV, RO is logic high; if (A-B) <= -200mV, RO is logic low. High-Z when /RE is high. |
| 2 | /RE | input | Receiver output enable (active low). RO is enabled when /RE is low; RO is high-Z when /RE is high. When /RE is high AND DE is low, the device enters low-power shutdown mode. Uses hot-swap input structure. |
| 3 | DE | input | Driver output enable. Driver outputs A and B are active when DE is high, high-Z when DE is low. When /RE is high AND DE is low, the device enters low-power shutdown mode. Uses hot-swap input structure. |
| 4 | DI | input | Driver input. When DE is high: DI low drives A low and B high; DI high drives A high and B low. VIH >= 2V, VIL <= 0.8V. |
| 5 | GND | power_in | Ground reference for the device. |
| 6 | A | bidirectional | Non-inverting receiver input and non-inverting driver output (RS-485/RS-422 bus line A). Input voltage range -7V to +12V; ±16kV IEC 61000-4-2 ESD protected. |
| 7 | B | bidirectional | Inverting receiver input and inverting driver output (RS-485/RS-422 bus line B). Input voltage range -7V to +12V; ±16kV IEC 61000-4-2 ESD protected. |
| 8 | VCC | power_in | Positive supply: 3.15V <= VCC <= 3.45V (nominal +3.3V). Bypass with a 0.1µF capacitor to GND. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HGSEMI |
| Package | SOIC-8 |
| Category | Interface |
| Pins | 8 |
Ordering variants
65HVD78EIM/TR65HVD78EIMECM/TR65HVD78EIMEIN65HVD78EIMECN65HVD78EIMM/TR65HVD78EIMECMM/TR
CAD (KiCad official)
- Symbol:
65HVD78EIM - 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: HGSEMI datasheet (None pp, sha256
11f027c743ac8483, 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).