# ADM3232EARNZ

**UMW** · RS232 ICs · SOP-16

ADM3232EARNZ 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 C1. |
| 2 | V+ | power_out | Positive charge-pump output, +5.5V generated by the charge pump. |
| 3 | C1- | passive | Negative terminal of the voltage-doubler charge-pump capacitor C1. |
| 4 | C2+ | passive | Positive terminal of the inverting charge-pump capacitor C2. |
| 5 | C2- | passive | Negative terminal of the inverting charge-pump capacitor C2. |
| 6 | V- | power_out | Negative charge-pump output, -5.5V generated by the charge pump. |
| 7 | T2OUT | output | RS-232 driver output; short-circuit duration is continuous and the output is protected against short circuits to ground. |
| 8 | R2IN | input | RS-232 receiver input rated ±15V, with typical 300mV hysteresis; an unconnected input is pulled to a HIGH receiver output by a 5kΩ pulldown. |
| 9 | R2OUT | output | TTL/CMOS receiver output (inverting relative to RxIN). |
| 10 | T2IN | input | TTL/CMOS driver input; the driver input has no pull-up resistor, so unused inputs should be connected to VCC or GND. |
| 11 | T1IN | input | TTL/CMOS driver input; the driver input has no pull-up resistor, so unused inputs should be connected to VCC or GND. |
| 12 | R1OUT | output | TTL/CMOS receiver output (inverting relative to RxIN). |
| 13 | R1IN | input | RS-232 receiver input rated ±15V, with typical 300mV hysteresis; an unconnected input is pulled to a HIGH receiver output by a 5kΩ pulldown. |
| 14 | T1OUT | output | RS-232 driver output; short-circuit duration is continuous and the output is protected against short circuits to ground. |
| 15 | GND | power_in | Ground. |
| 16 | VCC | power_in | Supply voltage, +3.0V to +5.5V. |

## Key specifications

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

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Input Logic Threshold HIGH |  | 2 |  |  | V | TxIN, EN, SHDN, Note2; VCC=3.3V | 3 |
| Input Logic Threshold HIGH |  | 2.4 |  |  | V | TxIN, EN, SHDN, Note2; VCC=5V | 3 |
| Input Logic Threshold LOW |  |  |  | 0.8 | V | TxIN, EN, SHDN, Note2 | 3 |
| Input Leakage Current |  | -1 | 0.01 | 1 | µA | TxIN, EN, SHDN, TAMB=25°C | 3 |
| Output Leakage Current (receiver outputs) |  | -10 | 0.05 | 10 | µA | receivers disable | 3 |
| Output Voltage LOW |  |  |  | 0.4 | V | IOUT=1.6mA | 3 |
| Output Voltage Swing |  | -5 | 5.4 |  | V | 3kΩ load to ground at all driver outputs | 3 |
| Output Resistance |  | 300 |  |  | Ω | VCC=V+=V-=0V, TOUT=±2V | 3 |
| Output Leakage Current (driver outputs) |  | -25 |  | 25 | µA | VOUT=±12V, VCC=0V to 5.5V drivers disabled | 3 |
| Receiver Input Voltage Range |  | -15 |  | 15 | V |  | 4 |
| Receiver Input Hysteresis |  |  | 0.3 |  | V |  | 4 |
| Receiver Input Resistance |  | 3 | 5 | 7 | kΩ |  | 4 |
| Input Threshold LOW |  |  | 0.6 | 0.8 | V | VCC=3.3V | 4 |
| Input Threshold LOW |  |  | 1.2 | 1.5 | V | VCC=5V | 4 |
| Input Threshold HIGH |  | 2.4 | 1.5 |  | V | VCC=3.3V | 4 |
| Input Threshold HIGH |  | 2.4 | 1.8 |  | V | VCC=5V | 4 |
| Maximum Data Rate |  | 120 | 235 |  | kbps | RL=3kΩ, CL=1000pF, one driver switching | 4 |
| Transition-Region Slew Rate |  |  |  | 30 | V/µs | VCC=3.3V, RL=3kΩ, TAMB=25°C; measurements from -3.0V to +3.0V or +3.0V to -3.0V | 4 |
| Supply voltage | VCC | 3 |  | 5.5 | V |  | 6 |
| External charge-pump capacitor |  | 0.1 |  |  | µF |  | 12 |
| Charge-pump capacitor voltage rating |  | 16 |  |  | V |  | 12 |
| VCC supply voltage | VCC | -0.3 |  | 6 | V |  | 2 |
| V+ (NOTE 1) | V+ | -0.3 |  | 7 | V | NOTE 1 | 2 |
| V- (NOTE 1) | V- | -7 |  | 0.3 | V | NOTE 1 | 2 |
| V+ + /V-/ (NOTE 1) |  |  |  | 13 | V | NOTE 1 | 2 |
| ICC (DC VCC or GND current) | ICC | -100 |  | 100 | mA |  | 2 |
| TxIN, EN input voltage |  | -0.3 |  | 6 | V |  | 2 |
| RxIN input voltage |  | -15 |  | 15 | V |  | 2 |
| TxOUT output voltage |  | -15 |  | 15 | V |  | 2 |
| RxOUT output voltage |  | -0.3 |  |  | V |  | 2 |
| Storage temperature |  | -65 |  | 150 | °C |  | 2 |
| Power dissipation per package (16-pin SOP) |  |  |  | 1086 | mW | derate 13.57mW/°C above +70°C | 2 |

## CAD (KiCad official)

- Symbol: `ADM3232EARNZ`
- Footprint: `Package_SO:SOIC-16_3.9x9.9mm_P1.27mm`
- 3D model: SOP-16 (KiCad packages3D, STEP)
- 3D model files: `adm3232earnz-etched.step` / `adm3232earnz-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `adm3232earnz.step` / `adm3232earnz.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/8757271790463279104) (20 pp, sha256 `0d2eee671ed2f15f`, retrieved 2026-10-17, 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/adm3232earnz-datasheet.pdf)