# MAX490EPA+

**Maxim Integrated** · RS-485/RS-422 ICs · DIP-8

MAX490EPA+ from Maxim Integrated, in a DIP-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 | VCC | power_in | Positive supply, 4.75V ≤ VCC ≤ 5.25V. |
| 2 | RO | output | Receiver output: high if A > B by 200mV, low if A < B by 200mV. |
| 3 | DI | input | Driver input: a low forces Y low and Z high, a high forces Y high and Z low. |
| 4 | GND | power_in | Ground. |
| 5 | Y | output | Noninverting driver output. |
| 6 | Z | output | Inverting driver output. |
| 7 | B | input | Inverting receiver input. |
| 8 | A | input | Noninverting receiver input. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Maxim Integrated |
| Package | DIP-8 |
| Category | Interface ICs |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `MAX490EPA+`
- Footprint: `Package_DIP:DIP-8_W7.62mm`
- 3D model: DIP-8 (KiCad packages3D, STEP)
- 3D model files: `max490epa-etched.step` / `max490epa-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `max490epa.step` / `max490epa.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Maxim Integrated datasheet](https://www.analog.com/media/en/technical-documentation/data-sheets/max1487-max491.pdf) (17 pp, sha256 `b7888c0d45b0dc58`, retrieved 2026-10-29, tier: manufacturer)
- **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/max490epa-datasheet.pdf)