component
HT3085ARZ
Public Unreviewedby Ray
HTCSEMI Buffer/Driver/Transceiver, SOP-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
markdownHT3085ARZ
HTCSEMI · Buffer/Driver/Transceiver · SOP-8
HT3085ARZ from HTCSEMI, 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 | tri_state | Receiver output. Drives logic high when A-B > +0.2V, logic low when A-B < -0.2V, and enters high-impedance when /RE is high. Fail-safe guarantees logic-high when receiver inputs are open. |
| 2 | /RE | input | Receiver output enable, active low. Drive low to enable RO; drive high to place RO in high-impedance state. |
| 3 | DE | input | Driver output enable, active high. Drive high to enable differential driver outputs A/B; drive low to place them in high-impedance. |
| 4 | DI | input | Driver (transmit) input. Logic high forces Y (A) high and Z (B) low; logic low reverses the differential output. TTL/CMOS compatible with VIH ≥ 2.0V, VIL ≤ 0.8V. |
| 5 | GND | power_in | Ground reference for the device. |
| 6 | A | bidirectional | Non-inverting driver output / non-inverting receiver input (RS-485/RS-422 differential line, corresponds to Y when transmitting). Rated -7V to +12V absolute range, ±15kV air ESD protected. |
| 7 | B | bidirectional | Inverting driver output / inverting receiver input (RS-485/RS-422 differential line, corresponds to Z when transmitting). Rated -7V to +12V absolute range, ±15kV air ESD protected. |
| 8 | VCC | power_in | Positive supply input, 3.3V ±10%. Absolute maximum 7V. Quiescent current is typically 300 µA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HTCSEMI |
| Package | SOP-8 |
| Category | Logic |
| Pins | 8 |
Ordering variants
Same part, different packaging or reel option.
HT3085ARZHT3085ARZANZ
CAD (KiCad official)
- Symbol:
HT3085ARZ - 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: HTCSEMI datasheet (6 pp, sha256
7bc945bf6b4c668a, retrieved 2026-08-17, tier: lcsc) - 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).