# COS13488EESA

**COSINE** · RS-485 / RS-422 ICs · SOP-8

COS13488EESA from COSINE, in a SOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | RO | output | Receiver output: when the receiver is enabled (RE low), RO goes high if A > B by 200mV and low if A < B by 200mV. |
| 2 | RE | input | Receiver output enable: a low enables the receiver output RO, and a high lets the auto-direction circuit control the receiver; RE is a hot-swap input. |
| 3 | SHDN | input | Shutdown: driving SHDN low puts the device in shutdown mode, and driving it high lets the device operate normally. |
| 4 | DI | input | Driver input: DI low forces the non-inverting output low and the inverting output high, DI high forces the non-inverting output high and the inverting output low, and DI is the input to the internal state machine that automatically enables and disables the driver. |
| 5 | GND | power_in | Ground reference for the device. |
| 6 | A | bidirectional | Non-inverting receiver input and non-inverting driver output on the RS-485 bus; bus common-mode input range is -7V to 12V. |
| 7 | B | bidirectional | Inverting receiver input and inverting driver output on the RS-485 bus; bus common-mode input range is -7V to 12V. |
| 8 | VCC | power_in | Power supply, 3-V to 5.5-V; bypass VCC to GND with a 0.1µF capacitor. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | COSINE |
| Package | SOP-8 |
| Category | Interface |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `COS13488EESA`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files: `cos13488eesa-etched.step` / `cos13488eesa-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cos13488eesa.step` / `cos13488eesa.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [COSINE datasheet](docs/cos13488eesa-datasheet.pdf) (16 pp, sha256 `047e898e4e918cae`, retrieved 2026-10-09, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/cos13488eesa-datasheet.pdf)