component
SIT3085EESA
Public Made by Adomby adom
SIT RS-485 / RS-422 ICs, 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
markdownSIT3085EESA
SIT · RS-485 / RS-422 ICs · SOP-8
SIT3085EESA from SIT, 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. When /RE is low: if (A - B) ≥ -50 mV, RO is high; if (A - B) ≤ -200 mV, RO is low. Drives up to |
| 2 | /RE | input | Receiver Output Enable (active-low). Drive /RE low to enable RO; RO is high-impedance when /RE is high. Drive /RE high and DE low to enter low-power shutdown mode (ISHDN ≈ 0.5 µA typ). Hot-swap tolerant. VIH ≥ 2.0 V, VIL ≤ 0.8 V. |
| 3 | DE | input | Driver Output Enable (active-high). Drive DE high to enable driver outputs on A/B; outputs are high-impedance when DE is low. Drive /RE high and DE low together to enter low-power shutdown mode. Hot-swap tolerant. VIH ≥ 2.0 V, VIL ≤ 0.8 V. |
| 4 | DI | input | Driver Input. With DE high, a low on DI forces the non-inverting output (A) low and inverting output (B) high; a high on DI forces A high and B low. VIH ≥ 2.0 V, VIL ≤ 0.8 V. |
| 5 | GND | power_in | Ground return / reference for all voltages on the device. |
| 6 | A | bidirectional | RS-485/RS-422 non-inverting Receiver Input and non-inverting Driver Output. Bus pin tolerant to -7 V to +12 V common-mode; HBM ±16 kV, IEC61000-4-2 contact discharge ±16 kV. Receiver input resistance ≥ 96 kΩ (1/8 unit load). |
| 7 | B | bidirectional | RS-485/RS-422 inverting Receiver Input and inverting Driver Output. Bus pin tolerant to -7 V to +12 V common-mode; HBM ±16 kV, IEC61000-4-2 contact discharge ±16 kV. Receiver input resistance ≥ 96 kΩ (1/8 unit load). |
| 8 | VCC | power_in | Positive Supply. Operating range 4.5 V to 5.5 V (absolute maximum +7 V). Supply current typ 180 µA (receiver enabled) / 150 µA (driver enabled); 0.5 µA typ in shutdown. Bypass to GND close to the pin. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | SIT |
| Package | SOP-8 |
| Category | Interface |
| Pins | 8 |
Ordering variants
Same part, different packaging or reel option.
SIT3085EESA
CAD (KiCad official)
- Symbol:
SIT3085EESA - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
sit3085eesa-etched.step/sit3085eesa-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sit3085eesa.step/sit3085eesa.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: SIT datasheet (18 pp, sha256
bd5a0c8a9c8a2f0e, 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).