SP3223EEA-L

@@ -0,0 +1,64 @@+# SP3223EEA-L++**MaxLinear** · RS232 ICs · SSOP-20-208mil++SP3223EEA-L from MaxLinear, in a SSOP-20-208mil. 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 | EN | input | Receiver Enable (active-low). Apply logic LOW for normal operation; apply logic HIGH to disable receiver outputs (high-Z state). TTL/CMOS logic input. |+| 2 | C1+ | passive | Positive terminal of the voltage-doubler charge-pump capacitor (typ. 0.1µF at 3.3V, 0.047µF at 5V). Connects to external flying capacitor for the +V charge pump. |+| 3 | V+ | power_out | Regulated +5.5V output generated by the internal charge pump. Connect a 0.1µF (0.33µF at 5V) reservoir capacitor to GND. Supplies the RS-232 driver positive rail. |+| 4 | C1- | passive | Negative terminal of the voltage-doubler charge-pump capacitor. Pairs with C1+ for the flying capacitor of the +V charge pump. |+| 5 | C2+ | passive | Positive terminal of the inverting charge-pump capacitor. Connects to external flying capacitor for the -V charge pump. |+| 6 | C2- | passive | Negative terminal of the inverting charge-pump capacitor. Pairs with C2+ for the flying capacitor of the -V charge pump. |+| 7 | V- | power_out | Regulated -5.5V output generated by the internal charge pump. Connect a 0.1µF (0.33µF at 5V) reservoir capacitor to GND. Supplies the RS-232 driver negative rail. |+| 8 | T2OUT | output | RS-232 driver #2 output. ±5.4V typical swing loaded with 3kΩ. Short-circuit protected to GND indefinitely. |+| 9 | R2IN | input | RS-232 receiver #2 input. ±15V input range, 5kΩ typical input resistance with internal pull-down. Inverting receiver converts ±5V EIA/TIA-232 levels to TTL/CMOS. |+| 10 | R2OUT | output | TTL/CMOS receiver #2 output. Inverted logic level output of the R2IN receiver. VOH = Vcc-0.1V typ, VOL = 0.4V max at 1.6mA. |+| 11 | STATUS | output | TTL/CMOS status output indicating online and shutdown status of the AUTO ON-LINE circuitry. HIGH when receiver activity is present, LOW when inactive. VOH = Vcc-0.6V min, VOL = 0.4V max. |+| 12 | T2IN | input | TTL/CMOS driver #2 logic input. Feeds the T2OUT RS-232 driver. Input thresholds: VIL = 0.8V max, VIH = 2.0V min. Unused inputs should be tied to GND or Vcc. |+| 13 | T1IN | input | TTL/CMOS driver #1 logic input. Feeds the T1OUT RS-232 driver. Input thresholds: VIL = 0.8V max, VIH = 2.0V min. Unused inputs should be tied to GND or Vcc. |+| 14 | ONLINE | input | AUTO ON-LINE override (active-low). Apply logic HIGH to override AUTO ON-LINE circuitry and keep drivers active continuously (SHUTDOWN must also be HIGH). Refer to truth table. |+| 15 | R1OUT | output | TTL/CMOS receiver #1 output. Inverted logic level output of the R1IN receiver. VOH = Vcc-0.1V typ, VOL = 0.4V max at 1.6mA. |+| 16 | R1IN | input | RS-232 receiver #1 input. ±15V input range, 5kΩ typical input resistance with internal pull-down. Inverting receiver converts ±5V EIA/TIA-232 levels to TTL/CMOS. |+| 17 | T1OUT | output | RS-232 driver #1 output. ±5.4V typical swing loaded with 3kΩ. Short-circuit protected to GND indefinitely. |+| 18 | GND | power_in | Ground reference for the device. |+| 19 | VCC | power_in | +3.0V to +5.5V supply voltage. Bypass to GND with a 0.1µF ceramic capacitor placed close to the pin. |+| 20 | SHUTDOWN | input | Shutdown control (active-low). Apply logic LOW to shut down drivers and charge pump, overriding all AUTO ON-LINE circuitry and ONLINE (refer to truth table). Reduces supply current to typ 1µA. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | MaxLinear |+| Package | SSOP-20-208mil |+| Category | Interface |+| Pins | 20 |++## Ordering variants++- `SP3223EEA-LEA-L`+- `SP3223EEA-LEBEA-L`+- `SP3223EEA-LEUEA-L`+- `SP3223EEA-LEY-L`+- `SP3223EEA-LEBEY-L`+- `SP3223EEA-LEUEY-L`++## CAD (KiCad official)++- Symbol: `SP3223EEA-L`+- Footprint: `Package_SO:SSOP-20_5.3x7.2mm_P0.65mm`+- 3D model: SSOP-20-208mil (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [MaxLinear datasheet](docs/sp3223eea-l-datasheet.pdf) (20 pp, sha256 `59c6e5dfb526c896`, 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/sp3223eea-l-datasheet.pdf)

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