component
GM490E
Public Made by Adomby adom
GATEMODE 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
markdownGM490E
GATEMODE · RS-485/RS-422 ICs · SOP-8
GM490E from GATEMODE, 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. 4.75V ≤ VCC ≤ 5.25V (5V ±5%). Absolute max 6.5V. Bypass with a 0.1µF capacitor to GND. |
| 2 | RO | output | Receiver Output. If A−B > 200mV, RO is high; if A−B < −200mV, RO is low. VOH ≥ 3.5V at −4mA, VOL ≤ 0.4V at 4mA. Fail-safe high with open inputs. |
| 3 | DI | input | Driver Input. A low on DI forces output Y low and output Z high; a high on DI forces Y high and Z low. VIH ≥ 2.0V, VIL ≤ 0.8V. |
| 4 | GND | power_in | Device ground reference. All voltages are referenced to this pin. |
| 5 | Y | output | Non-inverting Driver Output (RS-485/RS-422 bus line). Differential driver output pair with Z; VOD ≥ 1.5V into 27Ω (RS-485) or ≥ 2V into 50Ω (RS-422). ±15kV HBM ESD protection, short-circuit current limited (35-250mA) with thermal shutdown. |
| 6 | Z | output | Inverting Driver Output (RS-485/RS-422 bus line). Complementary to Y. ±15kV HBM ESD protection, short-circuit current limited (35-250mA) with thermal shutdown. |
| 7 | B | input | Inverting Receiver Input (RS-485/RS-422 bus line). Differential input with A; ΔVTH ±200mV, 70mV typ hysteresis, 96kΩ min input resistance (1/8 unit load, allows up to 256 nodes). Input range −7V ≤ VCM ≤ 12V. ±15kV HBM ESD protection. |
| 8 | A | input | Non-inverting Receiver Input (RS-485/RS-422 bus line). Differential input with B; ΔVTH ±200mV, 70mV typ hysteresis, 96kΩ min input resistance (1/8 unit load). Input range −7V ≤ VCM ≤ 12V. ±15kV HBM ESD protection. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | GATEMODE |
| Package | SOP-8 |
| Category | Comm/UART |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
GM490E - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
gm490e-etched.step/gm490e-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);gm490e.step/gm490e.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: GATEMODE datasheet (15 pp, sha256
60d66baeea28e06f, 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).