SP3220EEA-L

@@ -0,0 +1,60 @@+# SP3220EEA-L++**MaxLinear** · RS232 ICs · SSOP-16-208mil++SP3220EEA-L from MaxLinear, in a SSOP-16-208mil. 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 Control (active-low, /EN). Drive LOW for normal operation; drive HIGH to tri-state the receiver output R1OUT (high-Z). TTL/CMOS logic level referenced to VCC. |+| 2 | C1+ | passive | Positive terminal of the voltage-doubler charge-pump capacitor. Connect a 0.1µF ceramic capacitor between C1+ (pin 2) and C1- (pin 4). |+| 3 | V+ | power_out | Positive charge-pump output, nominally +5.5V generated by the internal doubler. Bypass with a 0.1µF capacitor to GND (or to VCC). |+| 4 | C1- | passive | Negative terminal of the voltage-doubler charge-pump capacitor. Connect a 0.1µF ceramic capacitor between C1+ (pin 2) and C1- (pin 4). |+| 5 | C2+ | passive | Positive terminal of the inverting charge-pump capacitor. Connect a 0.1µF ceramic capacitor between C2+ (pin 5) and C2- (pin 6). |+| 6 | C2- | passive | Negative terminal of the inverting charge-pump capacitor. Connect a 0.1µF ceramic capacitor between C2+ (pin 5) and C2- (pin 6). |+| 7 | V- | power_out | Negative charge-pump output, nominally -5.5V generated by the inverter. Bypass with a 0.1µF capacitor to GND. |+| 8 | R1IN | input | RS-232 receiver input. Accepts ±15V RS-232 signaling with typical input threshold LOW 0.6/0.8V and HIGH 1.5/1.8V (at VCC=3.3V/5.0V), ~0.3V hysteresis, and 3-7kΩ input resistance to ground. |+| 9 | R1OUT | output | TTL/CMOS receiver output. Drives VOL ≤ 0.4V at IOL=1.6mA and VOH ≥ VCC-0.6V at IOH=-1.0mA. Tri-stated when /EN is HIGH; remains active in shutdown so external UARTs can be monitored. |+| 10 | NC | unconnected | No Connect. Leave floating or tie according to layout preference. |+| 11 | T1IN | input | TTL/CMOS driver input. Logic thresholds: VIL ≤ 0.8V, VIH ≥ 2.0V (VCC=3.3V) / 2.4V (VCC=5.0V). Typical input hysteresis 250mV. Datasheet recommends tying an unused input to VCC or GND. |+| 12 | NC | unconnected | No Connect. Leave floating. |+| 13 | T1OUT | output | RS-232 driver output. Delivers ±5.0V (typ ±5.4V) into a 3kΩ / 1000pF load with internally slew-rate-limited transitions (≤30V/µs). Output resistance 300Ω; short-circuit protected to ground. |+| 14 | GND | power_in | Ground reference for logic, receivers and charge pump. |+| 15 | VCC | power_in | +3.0V to +5.5V supply voltage input. Bypass to GND with a 0.1µF ceramic capacitor. Typical supply current 0.3mA (no load); ≤1µA in shutdown. |+| 16 | SHDN | input | Shutdown Control input (active-low, /SHDN). Drive HIGH for normal operation; drive LOW to shut down the driver (high-Z output) and disable the on-chip charge pump (V+ pulled to VCC, V- pulled to GND). Receiver output R1OUT remains active in shutdown. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | MaxLinear |+| Package | SSOP-16-208mil |+| Category | Interface |+| Pins | 16 |++## Ordering variants++- `SP3220EEA-LSP3220EEA`+- `SP3220EEA-L`+- `SP3220EEA-LSP3220EEY`+- `SP3220EEA-LSP3220ECY`+- `SP3220EEA-LSP3220EET`+- `SP3220EEA-LSP3220ECT`++## CAD (KiCad official)++- Symbol: `SP3220EEA-L`+- Footprint: `Package_SO:SSOP-16_5.3x6.2mm_P0.65mm`+- 3D model: SSOP-16-208mil (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [MaxLinear datasheet](docs/sp3220eea-l-datasheet.pdf) (18 pp, sha256 `4ab6bc07e882ad10`, 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/sp3220eea-l-datasheet.pdf)

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