AF223

@@ -0,0 +1,42 @@+# AF223++**Sam wing** · Touch Sensors · SOT-23-6++AF223 from Sam wing, in a SOT-23-6. 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 | OUT | output | Touch key sense output. Push-pull output whose active polarity is set by AHLB and whose mode (direct/synchronous vs. toggle/hold) is set by TOG. Sink capability 20 mA at Vol=0.3VDD; source 10 mA at Voh=0.7VDD. |+| 2 | GND | power_in | Ground / negative supply reference (0 V). |+| 3 | KEY | input | Capacitive touch sensing input. Connect to the touch pad through a series 1 kΩ resistor (R1, recommended 0-5 kΩ). An optional CSEL capacitor (0-50 pF) to GND tunes sensitivity. |+| 4 | AHLB | input | Output polarity select. AHLB=1 (tied to VDD): OUT is active-low (idle high). AHLB=0 (tied to GND or floating): OUT is active-high (idle low). Default state 0. |+| 5 | VDD | power_in | Positive supply input, 2.0-5.5 V (typ 3 V). Bypass with a 100 nF capacitor to GND placed close to the pin. |+| 6 | TOG | input | Hold/synchronous mode select. TOG=1 (tied to VDD): OUT operates in toggle/hold (self-latching) mode. TOG=0 (tied to GND): OUT operates in synchronous/direct mode (default). In synchronous mode an internal 8 s max-active timer resets output if a key is held too long. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Sam wing |+| Package | SOT-23-6 |+| Category | Sensor |+| Pins | 6 |++## CAD (KiCad official)++- Symbol: `AF223`+- Footprint: `Package_TO_SOT_SMD:SOT-23-6`+- 3D model: SOT-23-6 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Sam wing datasheet](docs/af223-datasheet.pdf) (7 pp, sha256 `5e145faa59262ba6`, retrieved 2026-08-17, tier: lcsc)+- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.+- **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/af223-datasheet.pdf)

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