# MAX3232ID

**UMW** · RS232 ICs · SOP-16

MAX3232ID from UMW, in a SOP-16. 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 | C1+ | passive | Positive terminal of the voltage-doubler charge-pump capacitor, connected to an external capacitor. |
| 2 | V+ | power_out | +5.5V generated by the internal charge pump, which requires the external charge-pump capacitors. |
| 3 | C1- | passive | Negative terminal of the voltage-doubler charge-pump capacitor, connected to an external capacitor. |
| 4 | C2+ | passive | Positive terminal of the inverting charge-pump capacitor, connected to an external capacitor. |
| 5 | C2- | passive | Negative terminal of the inverting charge-pump capacitor, connected to an external capacitor. |
| 6 | V- | power_out | -5.5V generated by the internal charge pump, which requires the external charge-pump capacitors. |
| 7 | DOUT2 | output | RS-232 driver output 2, meeting TIA/EIA-232-F levels. |
| 8 | RIN2 | input | RS-232 receiver input 2, accepting TIA/EIA-232-F level signals (receiver input range ±25V per the absolute maximum table). |
| 9 | ROUT2 | output | TTL/CMOS receiver output 2 that drives the logic-side input. |
| 10 | DIN2 | input | TTL/CMOS driver input 2 that controls RS-232 driver output DOUT2. |
| 11 | DIN1 | input | TTL/CMOS driver input 1 that controls RS-232 driver output DOUT1; accepts 5.0V logic input with a 3.3V supply. |
| 12 | ROUT1 | output | TTL/CMOS receiver output 1 that drives the logic-side input. |
| 13 | RIN1 | input | RS-232 receiver input 1, accepting TIA/EIA-232-F level signals (receiver input range ±25V per the absolute maximum table). |
| 14 | DOUT1 | output | RS-232 driver output 1, meeting TIA/EIA-232-F levels. |
| 15 | GND | power_in | Ground reference for the device; all voltages are referenced to network GND. |
| 16 | VCC | power_in | Supply voltage input, +3.0V to +5.5V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | UMW |
| Package | SOP-16 |
| Category | Interface |
| Pins | 16 |

## CAD (KiCad official)

- Symbol: `MAX3232ID`
- Footprint: `Package_SO:SOIC-16_3.9x9.9mm_P1.27mm`
- 3D model: SOP-16 (KiCad packages3D, STEP)
- 3D model files: `max3232id-etched.step` / `max3232id-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `max3232id.step` / `max3232id.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [UMW datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8757270704683802624) (12 pp, sha256 `f5d14462460075a8`, 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/max3232id-datasheet.pdf)