# MAX1487ESA-HXY

**HXY MOSFET** · RS-485/RS-422 ICs · SOP-8

MAX1487ESA-HXY from HXY MOSFET, 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, which is logic high when A-B is at least +0.2V or the inputs are open, logic low when A-B is at most -0.2V, and high impedance when RE is high. |
| 2 | RE | input | Active-low receiver enable input; drive low to enable the receiver output, high to place RO in high impedance (VIL max 0.8V, VIH min 2.0V). |
| 3 | DE | input | Driver enable input; high enables the driver outputs A and B, low places them in high impedance (VIL max 0.8V, VIH min 2.0V). |
| 4 | DI | input | Driver input; with DE high a low on DI forces A low and B high, and a high on DI forces A high and B low (VIL max 0.8V, VIH min 2.0V). |
| 5 | GND | power_in | Ground. |
| 6 | A | bidirectional | Non-inverting RS-485/RS-422 receiver input and driver output, rated -8V to +12.5V with ±15kV HBM ESD protection. |
| 7 | B | bidirectional | Inverting RS-485/RS-422 receiver input and driver output, rated -8V to +12.5V with ±15kV HBM ESD protection. |
| 8 | VCC | power_in | Positive supply input, operated from a single +5V ±5% supply with a 0.1µF bypass capacitor and an absolute maximum of 12V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | HXY MOSFET |
| Package | SOP-8 |
| Category | Communication Interface Chip |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `MAX1487ESA-HXY`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files: `max1487esa-hxy-etched.step` / `max1487esa-hxy-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `max1487esa-hxy.step` / `max1487esa-hxy.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [HXY MOSFET datasheet](docs/max1487esa-hxy-datasheet.pdf) (9 pp, sha256 `833bacfdacfa52dd`, retrieved 2026-10-27, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+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/max1487esa-hxy-datasheet.pdf)