SP232EEN-L

@@ -0,0 +1,64 @@+# SP232EEN-L++**MaxLinear** · RS232 ICs · SOIC-16++SP232EEN-L from MaxLinear, in a SOIC-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 charge-pump capacitor C1 (0.1uF typical, ceramic). Used by the internal charge pump in phase 1/3 to double Vcc for generating V+. |+| 2 | V+ | power_out | Regulated positive charge-pump output, nominally +6V referenced to GND. Requires a reservoir capacitor (0.1uF, C3) to GND. Supplies the RS-232 driver positive rail. |+| 3 | C1- | passive | Negative terminal of charge-pump capacitor C1 (0.1uF ceramic). Switched between GND and V+ storage during the charge-pump doubling phases. |+| 4 | C2+ | passive | Positive terminal of charge-pump capacitor C2 (0.1uF ceramic). Used together with C1 to double and invert Vcc for producing V-. |+| 5 | C2- | passive | Negative terminal of charge-pump capacitor C2 (0.1uF ceramic). Switched between GND and the C2 inversion node during charge-pump phases 2 and 4. |+| 6 | V- | power_out | Regulated negative charge-pump output, nominally -6V referenced to GND. Requires a reservoir capacitor (0.1uF, C4) to GND. Supplies the RS-232 driver negative rail. |+| 7 | T2OUT | output | RS-232 driver #2 output. Inverted level-shifted transmit output, +/-6V typical swing (guaranteed +/-5.0V) into a 3k-ohm load with 2500pF, meeting EIA/TIA-232 and V.28. Short-circuit protected to GND. |+| 8 | R2IN | input | RS-232 receiver #2 input. Accepts +/-15V input range with typical thresholds of 1.2V (LOW) and 1.7V (HIGH) and ~500mV hysteresis; presents 3-7k-ohm input resistance to GND with an internal 5k pull-down. |+| 9 | R2OUT | output | Receiver #2 inverted TTL/CMOS logic output. Drives 0.4V max LOW at 3.2mA sink and 3.5V min HIGH at 1.0mA source with Vcc=5V. |+| 10 | T2IN | input | TTL/CMOS logic input for driver #2. Logic thresholds 0.8V (LOW) / 2.0V (HIGH); internal pull-up of ~15uA typical to Vcc keeps unused inputs defined. |+| 11 | T1IN | input | TTL/CMOS logic input for driver #1. Logic thresholds 0.8V (LOW) / 2.0V (HIGH); internal pull-up of ~15uA typical to Vcc keeps unused inputs defined. |+| 12 | R1OUT | output | Receiver #1 inverted TTL/CMOS logic output. Drives 0.4V max LOW at 3.2mA sink and 3.5V min HIGH at 1.0mA source with Vcc=5V. |+| 13 | R1IN | input | RS-232 receiver #1 input. Accepts +/-15V input range with typical thresholds of 1.2V (LOW) and 1.7V (HIGH) and ~500mV hysteresis; 3-7k-ohm input resistance with an internal 5k pull-down to GND. |+| 14 | T1OUT | output | RS-232 driver #1 output. Inverted level-shifted transmit output, +/-6V typical swing (guaranteed +/-5.0V) into a 3k-ohm load with 2500pF, short-circuit protected to GND. |+| 15 | GND | power_in | Device ground / 0V reference for supply, TTL logic side and RS-232 signal side. |+| 16 | VCC | power_in | +5V supply input (5V +/-10%). Typical unloaded supply current 3mA (5mA max); ~15mA under full transmit load with all transmitters driving 3k-ohm. Bypass to GND with a 0.1uF ceramic close to the pin. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | MaxLinear |+| Package | SOIC-16 |+| Category | Interface |+| Pins | 16 |++## Ordering variants++- `SP232EEN-L`+- `SP232EEN-L/TR`+- `SP232EEN-LSP232ECN-L`+- `SP232EEN-LSP232ECN-L/TR`+- `SP232EEN-LSP232ECP-L`+- `SP232EEN-LSP232EEP-L`+- `SP232EEN-LSP232ECT-L`+- `SP232EEN-LSP232ECT-L/TR`+- `SP232EEN-LSP232EET-L`+- `SP232EEN-LSP232EET-L/TR`++## CAD (KiCad official)++- Symbol: `SP232EEN-L`+- Footprint: `Package_SO:SOIC-16_3.9x9.9mm_P1.27mm`+- 3D model: SOIC-16 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [MaxLinear datasheet](docs/sp232een-l-datasheet.pdf) (18 pp, sha256 `4c56f98c6d2bf27f`, retrieved 2026-08-17, tier: manufacturer)+- **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/sp232een-l-datasheet.pdf)

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