component
max485ESA-JSM
Public Unreviewedby Ray
JSMSEMI max485ESA 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
markdownmax485ESA-JSM
JSMSEMI max485ESA · RS-485 / RS-422 ICs · SOP-8
max485ESA-JSM from JSMSEMI max485ESA, 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. Outputs logic-high when A-B > +0.2V and logic-low when A-B < -0.2V. High-impedance when RE is high; guarantees logic-high when receiver inputs are open (fail-safe). |
| 2 | RE | input | Receiver Output Enable (active-low). Drive low to enable the receiver output RO; drive high to place RO in high-impedance state. |
| 3 | DE | input | Driver Output Enable (active-high). Drive high to enable driver outputs A and B; drive low to place them in high-impedance state. |
| 4 | DI | input | Driver Input. TTL/CMOS logic input; logic-low drives A low and B high, logic-high drives A high and B low (when DE is asserted). |
| 5 | GND | power_in | Ground reference. 0V reference for all supply and signal voltages. |
| 6 | A | bidirectional | Non-inverting Driver Output and Non-inverting Receiver Input for the RS-485/RS-422 differential bus. Driver output voltage -8V to +12.5V range; receiver common-mode range -7V to +12V. Short-circuit current limited to 35-250mA. |
| 7 | B | bidirectional | Inverting Driver Output and Inverting Receiver Input for the RS-485/RS-422 differential bus. Driver output voltage -8V to +12.5V range; receiver common-mode range -7V to +12V. Short-circuit current limited to 35-250mA. |
| 8 | VCC | power_in | Positive supply input. Single 5V supply (4.75V to 5.25V). Quiescent current typically 300µA (RE=0, DE=0) up to 500µA typ with driver enabled. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | JSMSEMI max485ESA |
| Package | SOP-8 |
| Category | Interface |
| Pins | 8 |
Ordering variants
Same part, different packaging or reel option.
max485ESA-JSMmax485ESA-JSMDmax485ESA-JSMNmax485ESA-JSMCPAmax485ESA-JSMEPA
CAD (KiCad official)
- Symbol:
max485ESA-JSM - 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: JSMSEMI max485ESA datasheet (5 pp, sha256
d1f149b4b9cc624d, 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).