component
65HVD1787EIM
Public Unreviewedby Ray
HGSEMI RS-485 / RS-422 ICs, SOIC-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdown65HVD1787EIM
HGSEMI · RS-485 / RS-422 ICs · SOIC-8
65HVD1787EIM 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 drives high; if (A - B) <= -200mV, RO drives low. High-Z when receiver is disabled. |
| 2 | RE | input | Receiver enable (active-low). RE low enables receiver output RO; RE high places RO in high impedance. RE high together with DE low puts the device into low-power shutdown mode. Hot-swap input structure. |
| 3 | DE | input | Driver enable (active-high). DE high enables the differential driver outputs A/B; DE low tri-states them. RE high together with DE low puts the device into low-power shutdown mode. Hot-swap input structure. |
| 4 | DI | input | Driver data input. With DE high, DI low forces output A low and output B high; DI high forces A high and B low. VIH = 2V min, VIL = 0.8V max. |
| 5 | GND | power_in | Ground reference (0V). |
| 6 | A | bidirectional | Non-inverting RS-485/RS-422 bus line. Receiver non-inverting input and driver non-inverting output. Withstands -7V to +12V bus common-mode range; ±16kV IEC 61000-4-2 ESD. |
| 7 | B | bidirectional | Inverting RS-485/RS-422 bus line. Receiver inverting input and driver inverting output. Withstands -7V to +12V bus common-mode range; ±16kV IEC 61000-4-2 ESD. |
| 8 | VCC | power_in | Positive supply, 4.5V to 5.5V. Bypass to GND with a 0.1µF ceramic capacitor. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HGSEMI |
| Package | SOIC-8 |
| Category | Interface |
| Pins | 8 |
Ordering variants
Same part, different packaging or reel option.
65HVD1787EIMECM/TR65HVD1787EIM/TR65HVD1787EIMECN65HVD1787EIMEIN
CAD (KiCad official)
- Symbol:
65HVD1787EIM - 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 (17 pp, sha256
36fb131398d1c88b, 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).