# MAX13487EESA+T-JSM

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

MAX13487EESA+T-JSM from JSMSEMI, 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: RO is high if A-B ≥ -50mV and low if A-B ≤ -200mV when the receiver is enabled. |
| 2 | /RE | input | Receiver output enable, active low: RO is enabled when /RE is low, and when /RE is high the auto-direction control circuit controls the receiver; /RE is a hot-swap input. |
| 3 | /SHDN | input | Shutdown enable: device operates normally when /SHDN is high and enters low-power shutdown mode when /SHDN is low. |
| 4 | DI | input | Driver input: low forces the non-inverting output low and inverting output high, high forces the reverse; DI also feeds the internal state machine that controls driver enable, and is a hot-swap input. |
| 5 | GND | power_in | Ground. |
| 6 | A | bidirectional | Non-inverting receiver input and non-inverting driver output. |
| 7 | B | bidirectional | Inverting receiver input and inverting driver output. |
| 8 | VCC | power_in | Positive supply, 4.5V ≤ VCC ≤ 5.5V, with a 0.1µF capacitor connected between VCC and GND. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `MAX13487EESA+T-JSM`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files: `max13487eesa-t-jsm-etched.step` / `max13487eesa-t-jsm-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `max13487eesa-t-jsm.step` / `max13487eesa-t-jsm.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [JSMSEMI datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603406433874554880) (10 pp, sha256 `0b06888d45ee3523`, retrieved 2026-10-19, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (vision), consensus `claude-opus-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/max13487eesa-t-jsm-datasheet.pdf)