component
hgx3087eim
Public Unreviewedby Ray
HGSEMI RS-485/RS-422 ICs, SOP-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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markdownHGX3087EIM
HGSEMI · RS-485/RS-422 ICs · SOP-8
HGX3087EIM 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 | VCC | power_in | Positive supply input, 4.5V ≤ VCC ≤ 5.5V (nominal +5.0V). Bypass to GND with a 0.1µF ceramic capacitor placed close to the pin. |
| 2 | RO | output | Receiver output. Outputs logic high when the differential receiver input (A - B) ≥ -50 mV and logic low when (A - B) ≤ -200 mV. Drives up to IO = ±4 mA at rail-referenced levels (VOH ≥ VCC-0.6V, VOL ≤ 0.4V). |
| 3 | DI | input | Driver (transmit) data input. Because the HGX3087E driver has no DE pin, the driver output is always enabled: DI low → Y=low, Z=high; DI high → Y=high, Z=low. CMOS logic thresholds (VIH ≥ 2V, VIL ≤ 0.8V). |
| 4 | GND | power_in | Ground reference (0V) for the device. |
| 5 | Y | output | Driver non-inverting (true) differential output for the RS-485/RS-422 bus TX pair. Guaranteed differential VOD ≥ 2.1V into a 54Ω load (RS-485) and ≥ 2.7V into 100Ω (RS-422). Tolerates -7V to +12V bus fault voltages. |
| 6 | Z | output | Driver inverting (complement) differential output for the RS-485/RS-422 bus TX pair. Complements Y; guaranteed differential VOD ≥ 2.1V into 54Ω. Tolerates -7V to +12V bus fault voltages. |
| 7 | B | input | Receiver inverting differential input for the RS-485/RS-422 bus RX pair. Presents 1/8-unit-load impedance (RIN ≥ 96 kΩ). Tolerates -7V to +12V common-mode range and up to ±16 kV IEC 61000-4-2 ESD. |
| 8 | A | input | Receiver non-inverting differential input for the RS-485/RS-422 bus RX pair. Presents 1/8-unit-load impedance (RIN ≥ 96 kΩ). True fail-safe: outputs logic high on RO when the pair is open, shorted, or idle-terminated. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HGSEMI |
| Package | SOP-8 |
| Category | Comm/UART |
| Pins | 8 |
Ordering variants
HGX3087EIM/TRHGX3087EIMHGX3087ECM/TRHGX3087EIMHGX3087ECNHGX3087EIMHGX3087EINHGX3087EIMHGX3087ECMM/TRHGX3087EIMM/TR
CAD (KiCad official)
- Symbol:
HGX3087EIM - 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).