UM232EESE

@@ -0,0 +1,57 @@+# UM232EESE++**Union Semiconductor** · RS232 ICs · SOP-16++UM232EESE from Union Semiconductor, in a SOP-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 terminal of the voltage-doubler (positive charge pump) flying capacitor. Connect a 0.1μF ceramic capacitor between C1+ (pin 1) and C1- (pin 3). |+| 2 | V+ | power_out | +2·VCC (approximately +10V) output generated by the internal charge-pump voltage doubler. Bypass to GND with a 0.1μF capacitor; may supply a small load current at the expense of driver swing. |+| 3 | C1- | passive | Negative terminal of the voltage-doubler (positive charge pump) flying capacitor. Paired with C1+ (pin 1) via a 0.1μF ceramic capacitor. |+| 4 | C2+ | passive | Positive terminal of the voltage-inverter (negative charge pump) flying capacitor. Connect a 0.1μF ceramic capacitor between C2+ (pin 4) and C2- (pin 5). |+| 5 | C2- | passive | Negative terminal of the voltage-inverter (negative charge pump) flying capacitor. Paired with C2+ (pin 4) via a 0.1μF ceramic capacitor. |+| 6 | V- | power_out | -2·VCC (approximately -10V) output generated by the internal charge-pump voltage inverter. Bypass to GND with a 0.1μF capacitor. |+| 7 | T2OUT | output | RS-232 line driver #2 output. Inverting driver output swinging typically ±9V (guaranteed ±5V into 3kΩ / 2500pF). Slew rate internally limited to <30V/μs; short-circuit and ±15kV ESD protected. |+| 8 | R2IN | input | RS-232 line receiver #2 input. Accepts ±30V input, typical thresholds VIL=1.2V / VIH=1.7V with ~0.5V hysteresis, ~5kΩ internal pull-down to GND. ±15kV ESD protected. |+| 9 | R2OUT | output | RS-232 line receiver #2 output (TTL/CMOS logic level). Inverted with respect to R2IN; VOL≤0.4V @ 3.2mA sink, VOH≥3.5V @ 1mA source. |+| 10 | T2IN | input | RS-232 line driver #2 input (TTL/CMOS logic level). VIL≤0.8V, VIH≥2.0V; internally pulled to VCC through ~400kΩ so an unconnected input defaults high. |+| 11 | T1IN | input | RS-232 line driver #1 input (TTL/CMOS logic level). VIL≤0.8V, VIH≥2.0V; internally pulled to VCC through ~400kΩ so an unconnected input defaults high. |+| 12 | R1OUT | output | RS-232 line receiver #1 output (TTL/CMOS logic level). Inverted with respect to R1IN; VOL≤0.4V @ 3.2mA sink, VOH≥3.5V @ 1mA source. |+| 13 | R1IN | input | RS-232 line receiver #1 input. Accepts ±30V input, typical thresholds VIL=1.2V / VIH=1.7V with ~0.5V hysteresis, ~5kΩ internal pull-down to GND. ±15kV ESD protected. |+| 14 | T1OUT | output | RS-232 line driver #1 output. Inverting driver output swinging typically ±9V (guaranteed ±5V into 3kΩ / 2500pF). Slew rate internally limited to <30V/μs; short-circuit and ±15kV ESD protected. |+| 15 | GND | power_in | Ground / 0V reference for logic and RS-232 signaling. |+| 16 | VCC | power_in | Positive supply input, +4.5V to +5.5V (nominal +5V). Typical ICC = 10mA (15mA max) no-load. Bypass to GND with at least 0.1μF ceramic. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Union Semiconductor |+| Package | SOP-16 |+| Category | Interface |+| Pins | 16 |++## Ordering variants++- `UM232EESE`+- `UM232EESEPE`+- `UM232EESEUE`++## CAD (KiCad official)++- Symbol: `UM232EESE`+- Footprint: `Package_SO:SOIC-16_3.9x9.9mm_P1.27mm`+- 3D model: SOP-16 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Union Semiconductor datasheet](docs/um232eese-datasheet.pdf) (None pp, sha256 `839dd4779cce1a1e`, retrieved 2026-08-17, tier: lcsc)+- **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/um232eese-datasheet.pdf)

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