HEF4066BT

@@ -0,0 +1,53 @@+# HEF4066BT++**Nexperia** · Analog Switches, Multiplexers · SOIC-14++HEF4066BT from Nexperia, in a SOIC-14. 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 | 1Y | bidirectional | Switch 1 analog I/O terminal Y. Bidirectional analog signal path to 1Z when enable 1E is HIGH. Signal voltage range 0 V to VDD; typical RON ~80 Ω at VDD = 10 V. |+| 2 | 1Z | bidirectional | Switch 1 analog I/O terminal Z. Bidirectional analog signal path to 1Y when enable 1E is HIGH. Signal voltage range 0 V to VDD. |+| 3 | 2Z | bidirectional | Switch 2 analog I/O terminal Z. Bidirectional analog signal path to 2Y when enable 2E is HIGH. |+| 4 | 2Y | bidirectional | Switch 2 analog I/O terminal Y. Bidirectional analog signal path to 2Z when enable 2E is HIGH. |+| 5 | 2E | input | Switch 2 enable input, active HIGH. When HIGH the 2Y-2Z switch is ON; when LOW the switch is OFF. VIH ≥ 3.5 V at VDD = 5 V; VIL ≤ 1.5 V. |+| 6 | 3E | input | Switch 3 enable input, active HIGH. When HIGH the 3Y-3Z switch is ON; when LOW the switch is OFF. |+| 7 | VSS | power_in | Ground reference (0 V). Negative supply rail for the device. |+| 8 | 3Y | bidirectional | Switch 3 analog I/O terminal Y. Bidirectional analog signal path to 3Z when enable 3E is HIGH. |+| 9 | 3Z | bidirectional | Switch 3 analog I/O terminal Z. Bidirectional analog signal path to 3Y when enable 3E is HIGH. |+| 10 | 4Z | bidirectional | Switch 4 analog I/O terminal Z. Bidirectional analog signal path to 4Y when enable 4E is HIGH. |+| 11 | 4Y | bidirectional | Switch 4 analog I/O terminal Y. Bidirectional analog signal path to 4Z when enable 4E is HIGH. |+| 12 | 4E | input | Switch 4 enable input, active HIGH. When HIGH the 4Y-4Z switch is ON; when LOW the switch is OFF. |+| 13 | 1E | input | Switch 1 enable input, active HIGH. When HIGH the 1Y-1Z switch is ON; when LOW the switch is OFF. |+| 14 | VDD | power_in | Positive supply voltage. Recommended operating range 3 V to 15 V; absolute maximum 18 V. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Nexperia |+| Package | SOIC-14 |+| Category | Interface |+| Pins | 14 |++## Ordering variants++- `HEF4066BTT`++## CAD (KiCad official)++- Symbol: `HEF4066BT`+- Footprint: `Package_SO:SOIC-14_3.9x8.7mm_P1.27mm`+- 3D model: SOIC-14 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Nexperia datasheet](https://assets.nexperia.com/documents/data-sheet/HEF4066BT.pdf) (13 pp, sha256 `bec03e3d3a079926`, 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/hef4066bt-datasheet.pdf)

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