COSMAX13487EESA

@@ -0,0 +1,54 @@+# COSMAX13487EESA++**COSINE** · RS-485 / RS-422 ICs · SOP-8++COSMAX13487EESA from COSINE, 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 receiver is enabled (RE low), RO is high if A-B > +200 mV and low if A-B < -200 mV. High-impedance when RE is high or in shutdown. |+| 2 | RE | input | Receiver output enable, active low (hot-swap input). A low enables the receiver output RO; a high lets the internal auto-direction circuit control the receiver. |+| 3 | SHDN | input | Shutdown, active low. Drive SHDN low to put the device into shutdown mode (<10 µA); drive high for normal operation. |+| 4 | DI | input | Driver input. Low forces A low and B high; high forces A high and B low. Also feeds the internal state machine that auto-enables/disables the driver; must be held high in idle. |+| 5 | GND | power_in | Ground reference (0 V). |+| 6 | A | bidirectional | Non-inverting RS-485/RS-422 bus pin: non-inverting receiver input and non-inverting driver output. ±15 kV HBM ESD protection; withstands -7 V to +12 V common-mode range. |+| 7 | B | bidirectional | Inverting RS-485/RS-422 bus pin: inverting receiver input and inverting driver output. ±15 kV HBM ESD protection; withstands -7 V to +12 V common-mode range. |+| 8 | VCC | power_in | Power supply, 3.0 V to 5.5 V. Bypass to GND with a 0.1 µF ceramic capacitor. Quiescent current ~700 µA typ. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | COSINE |+| Package | SOP-8 |+| Category | Interface |+| Pins | 8 |++## Ordering variants++Same part, different packaging or reel option.++- `COSMAX13487EESACOS13487EE`+- `COSMAX13487EESACOS13488EE`+- `COSMAX13487EESACOS13487EM`+- `COSMAX13487EESACOS13488EM`+- `COSMAX13487EESACOS13487EF`+- `COSMAX13487EESACOS13488EF`++## CAD (KiCad official)++- Symbol: `COSMAX13487EESA`+- 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:** [COSINE datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603191032075345920) (14 pp, sha256 `cf855f03e34f9b22`, 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).++[Datasheet PDF](docs/cosmax13487eesa-datasheet.pdf)

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