DG409DY-T1-E3

@@ -0,0 +1,62 @@+# DG409DY-T1-E3++**Vishay** · Analog Switches, Multiplexers · SOIC-16++DG409DY-T1-E3 from Vishay, in a SOIC-16. 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 | A0 | input | Address bit 0 (LSB). TTL-compatible logic input selecting the active channel (Logic 0 = VAL ≤ 0.8 V, Logic 1 = VAH ≥ 2.4 V). Input current ±10 µA max. |+| 2 | EN | input | Enable input, TTL-compatible. When Logic 0 all switches are OFF; when Logic 1 the switch selected by A0/A1 is ON. Allows stacking of multiple devices. |+| 3 | V- | power_in | Negative analog supply. Dual-supply operation ±5 V to ±20 V, or connect to GND for single-supply operation (+5 V to +36 V referenced to V-). Analog signal range V- to V+. |+| 4 | S1a | passive | Analog switch source, bank A channel 1. Bidirectional analog terminal connected to Da when A1=0, A0=0, EN=1. RDS(on) ~100 Ω (V±=±15 V). |+| 5 | S2a | passive | Analog switch source, bank A channel 2. Bidirectional analog terminal connected to Da when A1=0, A0=1, EN=1. |+| 6 | S3a | passive | Analog switch source, bank A channel 3. Bidirectional analog terminal connected to Da when A1=1, A0=0, EN=1. |+| 7 | S4a | passive | Analog switch source, bank A channel 4. Bidirectional analog terminal connected to Da when A1=1, A0=1, EN=1. |+| 8 | Da | passive | Analog switch drain, bank A common. Bidirectional analog terminal common to S1a-S4a. Peak S/D current 100 mA pulsed; 30 mA continuous per terminal. |+| 9 | Db | passive | Analog switch drain, bank B common. Bidirectional analog terminal common to S1b-S4b. |+| 10 | S4b | passive | Analog switch source, bank B channel 4. Bidirectional analog terminal connected to Db when A1=1, A0=1, EN=1. |+| 11 | S3b | passive | Analog switch source, bank B channel 3. Bidirectional analog terminal connected to Db when A1=1, A0=0, EN=1. |+| 12 | S2b | passive | Analog switch source, bank B channel 2. Bidirectional analog terminal connected to Db when A1=0, A0=1, EN=1. |+| 13 | S1b | passive | Analog switch source, bank B channel 1. Bidirectional analog terminal connected to Db when A1=0, A0=0, EN=1. |+| 14 | V+ | power_in | Positive analog supply. Dual-supply ±5 V to ±20 V, or single-supply +5 V to +36 V (referenced to V-). Absolute max V+ to V- = 44 V. Quiescent I+ typ 10 µA (dual supply). |+| 15 | GND | power_in | Digital ground reference for A0, A1, EN logic thresholds. GND to V- limited to -25 V absolute max. |+| 16 | A1 | input | Address bit 1 (MSB). TTL-compatible logic input selecting the active channel with A0 (see truth table). Input current ±10 µA max. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Vishay |+| Package | SOIC-16 |+| Category | Interface |+| Pins | 16 |++## Ordering variants++- `DG409DY-T1-E3DG409DY`+- `DG409DY-T1-E3DG409DY-E3`+- `DG409DY-T1-E3DG409DY-T1`+- `DG409DY-T1-E3`+- `DG409DY-T1-E3DG409DJ`+- `DG409DY-T1-E3DG409DJ-E3`+- `DG409DY-T1-E3DG409DQ-E3`+- `DG409DY-T1-E3DG409DQ-T1-E3`++## CAD (KiCad official)++- Symbol: `DG409DY-T1-E3`+- Footprint: `Package_SO:SOIC-16_3.9x9.9mm_P1.27mm`+- 3D model: SOIC-16 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Vishay datasheet](docs/dg409dy-t1-e3-datasheet.pdf) (17 pp, sha256 `74df98dee9139dfa`, 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/dg409dy-t1-e3-datasheet.pdf)

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