COS3157ST

@@ -0,0 +1,46 @@+# COS3157ST++**COSINE** · Analog Switches, Multiplexers · SOT-23-6++COS3157ST from COSINE, 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 | NO | bidirectional | Normally Open analog switch terminal. Connected to COM when IN = 1 (switch ON), high-impedance when IN = 0. Rail-to-rail analog signal range 0V to VCC; conducts equally well in both directions with ~4.5Ω typical ON resistance. |+| 2 | GND | power_in | Ground return for the device. 0V reference for supply and digital control input. |+| 3 | NC | bidirectional | Normally Closed analog switch terminal. Connected to COM when IN = 0 (switch ON), high-impedance when IN = 1. Rail-to-rail analog signal range 0V to VCC; conducts equally well in both directions. Note: 'NC' here means Normally Closed switch pole, not No-Connect. |+| 4 | COM | bidirectional | Common analog switch terminal. Routed to either NO or NC depending on the state of the IN control pin. Rail-to-rail signal range 0V to VCC. |+| 5 | VCC | power_in | Positive supply input. Recommended operating range 1.65V to 5.5V (absolute max 6.0V). Typical quiescent supply current ICC ≤ 5µA at 5.5V. |+| 6 | IN | input | Digital control input selecting the switch state. IN = 0 → NC-to-COM path ON, NO OFF; IN = 1 → NO-to-COM path ON, NC OFF. TTL/CMOS compatible: VIH ≥ 2.6V (5V), ≥1.7V (3.3V); VIL ≤ 0.8V (5V), ≤0.7V (3.3V). Must be held HIGH or LOW; do not leave floating. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | COSINE |+| Package | SOT-23-6 |+| Category | Interface |+| Pins | 6 |++## Ordering variants++- `COS3157STST`+- `COS3157STSC`++## CAD (KiCad official)++- Symbol: `COS3157ST`+- 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:** [COSINE datasheet](docs/cos3157st-datasheet.pdf) (10 pp, sha256 `7d3155a9f9498ff0`, 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/cos3157st-datasheet.pdf)

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