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DG449DS-T1-E3
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Vishay Analog Switches, Multiplexers, SOT-23-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+47@@ -0,0 +1,47 @@+# DG449DS-T1-E3++**Vishay** · Analog Switches, Multiplexers · SOT-23-8++DG449DS-T1-E3 from Vishay, in a SOT-23-8. 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 | COM | passive | Switch common terminal. Connects to either NO or NC depending on IN logic level. Rail-to-rail analog signal handling within the (V-, V+) range. |+| 2 | NC | passive | Normally-closed switch terminal. Connected to COM when IN = logic 0 (≤ 0.8 V); disconnected when IN = logic 1 (≥ 2.4 V). 38 Ω typical on-resistance. |+| 3 | GND | power_in | Ground / logic reference. Maximum 25 V referenced to V-. |+| 4 | V+ | power_in | Positive supply input. +7 V to +36 V single-supply, or +4.5 V to +20 V dual-supply. Maximum 44 V referenced to V-. |+| 5 | N.C. | unconnected | No internal connection. Leave floating or tie to a convenient node; do not use for signal routing. |+| 6 | IN | input | Digital logic control input, TTL/CMOS compatible. VIL ≤ 0.8 V selects NC path (COM↔NC); VIH ≥ 2.4 V selects NO path (COM↔NO). Input current ±1 µA max. |+| 7 | V- | power_in | Negative supply input. Tie to GND for single-supply operation (+7 V to +36 V on V+), or -4.5 V to -20 V for dual-supply operation. |+| 8 | NO | passive | Normally-open switch terminal. Connected to COM when IN = logic 1 (≥ 2.4 V); disconnected when IN = logic 0 (≤ 0.8 V). 38 Ω typical on-resistance. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Vishay |+| Package | SOT-23-8 |+| Category | Interface |+| Pins | 8 |++## Ordering variants++- `DG449DS-T1-E3`++## CAD (KiCad official)++- Symbol: `DG449DS-T1-E3`+- Footprint: `Package_TO_SOT_SMD:SOT-23-8`+- 3D model: SOT-23-8 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Vishay datasheet](docs/dg449ds-t1-e3-datasheet.pdf) (10 pp, sha256 `ae0e332c0ed79827`, 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/dg449ds-t1-e3-datasheet.pdf)
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