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MAX3085
Public Made by Adomby adom
Shanghai Siproin Microelectronics RS-485/RS-422 ICs, SOP-8. Pinout extracted from the datasheet, 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
markdownMAX3085
Shanghai Siproin Microelectronics · RS-485/RS-422 ICs · SOP-8
MAX3085 from Shanghai Siproin Microelectronics, 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. High when A-B >= -0.05V, low when A-B <= -0.2V, and high (fail-safe) when A and B are open or shorted. High-impedance when RE is high. |
| 2 | RE | input | Receiver output enable (active-low). RO is enabled when RE is low; RO is high-impedance when RE is high. |
| 3 | DE | input | Driver output enable (active-high). Driver outputs A and B are enabled when DE is high, and are high-impedance when DE is low. |
| 4 | DI | input | Driver input. A low on DI forces output A low and output B high; a high on DI forces output A high and output B low (when DE is high). |
| 5 | GND | power_in | Ground reference (0V). |
| 6 | A | bidirectional | Non-inverting RS-485/RS-422 bus line. Serves as receiver non-inverting input and driver non-inverting output. Handles -7V to +12V common-mode; 96k-ohm min input resistance (1/8 unit load); +/-15kV HBM ESD protected. |
| 7 | B | bidirectional | Inverting RS-485/RS-422 bus line. Serves as receiver inverting input and driver inverting output. Handles -7V to +12V common-mode; 96k-ohm min input resistance (1/8 unit load); +/-15kV HBM ESD protected. |
| 8 | VDD | power_in | Supply voltage input, +5V nominal (absolute max -0.5V to +6V). Decouple with 0.1uF ceramic to GND close to the pin. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Shanghai Siproin Microelectronics |
| Package | SOP-8 |
| Category | Comm/UART |
| Pins | 8 |
Ordering variants
Same part, different packaging or reel option.
MAX3085
CAD (KiCad official)
- Symbol:
MAX3085 - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
max3085-etched.step/max3085-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);max3085.step/max3085.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Shanghai Siproin Microelectronics datasheet (11 pp, sha256
6179f730b209184a, 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).