# TRS3232EIPWR

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

TRS3232EIPWR from Texas Instruments, in a TSSOP-16. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | C1+ | passive | Positive lead of charge-pump flying capacitor C1. Connect an external capacitor (0.1 µF at VCC = 3.3 V; 0.047 µF at VCC = 5 V) between C1+ and C1-. |
| 2 | V+ | power_out | Positive charge-pump output for external storage capacitor only (typically +5.5 V). Requires a 0.1 µF or 0.33 µF capacitor to GND per operating conditions. |
| 3 | C1- | passive | Negative lead of charge-pump flying capacitor C1. |
| 4 | C2+ | passive | Positive lead of charge-pump flying capacitor C2 (0.1 µF or 0.33 µF). |
| 5 | C2- | passive | Negative lead of charge-pump flying capacitor C2. |
| 6 | V- | power_out | Negative charge-pump output for external storage capacitor only (typically -5.5 V). Requires a 0.1 µF or 0.33 µF capacitor to GND. |
| 7 | DOUT2 | output | RS-232 line data output for channel 2 (to remote RS-232 system). Swings ±5 V nominal, drives 3-kΩ load; ±15-kV IEC air-gap / ±8-kV IEC contact ESD protected. |
| 8 | RIN2 | input | RS-232 line data input for channel 2 (from remote RS-232 system). Accepts ±25 V input; ±15-kV IEC air-gap / ±8-kV IEC contact ESD protected. |
| 9 | ROUT2 | output | Logic-level (CMOS) data output for channel 2 (to UART). Output swings 0 V to VCC. |
| 10 | DIN2 | input | Logic-level (CMOS) data input for channel 2 (from UART). VIH ≥ 2 V at VCC = 3.3 V, ≥ 2.4 V at VCC = 5 V; VIL ≤ 0.8 V. |
| 11 | DIN1 | input | Logic-level (CMOS) data input for channel 1 (from UART). |
| 12 | ROUT1 | output | Logic-level (CMOS) data output for channel 1 (to UART). |
| 13 | RIN1 | input | RS-232 line data input for channel 1 (from remote RS-232 system). ±15-kV IEC air-gap / ±8-kV IEC contact ESD protected. |
| 14 | DOUT1 | output | RS-232 line data output for channel 1 (to remote RS-232 system). ±15-kV IEC air-gap / ±8-kV IEC contact ESD protected. |
| 15 | GND | power_in | Ground reference for supply and signals. |
| 16 | VCC | power_in | Supply voltage input, 3.0 V to 5.5 V. Bypass with a minimum 1-µF capacitor to GND to meet the specified IEC 61000-4-2 rating. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TSSOP-16 |
| Category | Comm/UART |
| Pins | 16 |

## Ordering variants

Same part, different packaging or reel option.

- `TRS3232EIPWR`
- `TRS3232EIPWRCPW`
- `TRS3232EIPWRCPWR`
- `TRS3232EIPWRID`
- `TRS3232EIPWRIDR`
- `TRS3232EIPWRCD`
- `TRS3232EIPWRCDR`
- `TRS3232EIPWRIDB`
- `TRS3232EIPWRIDBR`
- `TRS3232EIPWRCDB`
- `TRS3232EIPWRCDBR`
- `TRS3232EIPWRIDW`
- `TRS3232EIPWRIDWR`
- `TRS3232EIPWRCDW`
- `TRS3232EIPWRCDWR`
- `TRS3232EIPWRIRGT`
- `TRS3232EIPWRIRGTR`
- `TRS3232EIPWRCRGT`
- `TRS3232EIPWRCRGTR`

## CAD (KiCad official)

- Symbol: `TRS3232EIPWR`
- Footprint: `Package_SO:TSSOP-16_4.4x5mm_P0.65mm`
- 3D model: TSSOP-16 (KiCad packages3D, STEP)
- 3D model files: `trs3232eipwr-etched.step` / `trs3232eipwr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `trs3232eipwr.step` / `trs3232eipwr.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Texas Instruments datasheet](docs/trs3232eipwr-datasheet.pdf) (38 pp, sha256 `9773be544db0bcb1`, retrieved 2026-08-17, 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:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/trs3232eipwr-datasheet.pdf)