# MAX3232ECD

**Texas Instruments** · RS232 ICs · SOIC-16

MAX3232ECD from Texas Instruments, in a SOIC-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 lead of C1 capacitor. |
| 2 | V+ | power_out | Positive charge pump output for storage capacitor only. |
| 3 | C1- | passive | Negative lead of C1 capacitor. |
| 4 | C2+ | passive | Positive lead of C2 capacitor. |
| 5 | C2- | passive | Negative lead of C2 capacitor. |
| 6 | V- | power_out | Negative charge pump output for storage capacitor only. |
| 7 | DOUT2 | output | RS232 line data output to remote RS232 system. |
| 8 | RIN2 | input | RS232 line data input from remote RS232 system; RIN input range is -25 V to 25 V. |
| 9 | ROUT2 | output | Logic data output to UART. |
| 10 | DIN2 | input | Logic data input from UART; driver high-level input VIH is 2 V minimum at VCC = 3.3 V and 2.4 V minimum at VCC = 5 V. |
| 11 | DIN1 | input | Logic data input from UART; driver low-level input VIL is 0.8 V maximum. |
| 12 | ROUT1 | output | Logic data output to UART. |
| 13 | RIN1 | input | RS232 line data input from remote RS232 system; RIN input range is -25 V to 25 V. |
| 14 | DOUT1 | output | RS232 line data output to remote RS232 system. |
| 15 | GND | power_in | Ground. |
| 16 | VCC | power_in | Supply voltage; connect to external 3-V to 5.5-V power supply. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-16 |
| Category | Interface ICs |
| Pins | 16 |

## CAD (KiCad official)

- Symbol: `MAX3232ECD`
- Footprint: `Package_SO:SOIC-16_3.9x9.9mm_P1.27mm`
- 3D model: SOIC-16 (KiCad packages3D, STEP)
- 3D model files: `max3232ecd-etched.step` / `max3232ecd-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `max3232ecd.step` / `max3232ecd.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/lit/ds/symlink/max3232ecd.pdf) (29 pp, sha256 `b9350c9e44d231e1`, retrieved 2026-10-28, tier: manufacturer)
- **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/max3232ecd-datasheet.pdf)