GN4051B

@@ -0,0 +1,52 @@+# GN4051B++**GN Semic** · Analog Switches, Multiplexers · SOP-16++GN4051B from GN Semic, in a SOP-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 | Y4 | bidirectional | Independent analog I/O channel 4. Connects to common Z when address = 100 and E is low. Analog signal range: VEE to VDD. |+| 2 | Y6 | bidirectional | Independent analog I/O channel 6. Connects to common Z when address = 110 and E is low. |+| 3 | Z | bidirectional | Common analog I/O. Bidirectional: signals may flow Z→Yn (demux) or Yn→Z (mux). Routed to one of Y0-Y7 selected by A2:A0 when E is low. |+| 4 | Y7 | bidirectional | Independent analog I/O channel 7. Connects to common Z when address = 111 and E is low. |+| 5 | Y5 | bidirectional | Independent analog I/O channel 5. Connects to common Z when address = 101 and E is low. |+| 6 | E | input | Active-low enable input. When E = low, the selected Yn↔Z channel is on. When E = high, all channels are OFF (high-impedance) regardless of A2:A0. Digital logic input referenced to VSS. |+| 7 | VEE | power_in | Negative analog supply (typically 0 V to −6 V). Sets the negative excursion limit for analog signals through the switch. Tie to VSS (0 V) for single-supply digital-signal switching; connect to a negative rail for bipolar analog signals. VDD−VEE must not exceed 9 V. |+| 8 | VSS | power_in | Digital ground / logic reference (0 V). Reference for A0-A2 and E logic thresholds. |+| 9 | A2 | input | Address select input, MSB of the 3-bit channel select. Combined with A1:A0 to choose which Y0-Y7 connects to Z. Logic input referenced to VSS/VDD; VIH ≥ 3.5 V at VDD = 5 V. |+| 10 | A1 | input | Address select input, middle bit of the 3-bit channel select. |+| 11 | A0 | input | Address select input, LSB of the 3-bit channel select. |+| 12 | Y3 | bidirectional | Independent analog I/O channel 3. Connects to common Z when address = 011 and E is low. |+| 13 | Y0 | bidirectional | Independent analog I/O channel 0. Connects to common Z when address = 000 and E is low. |+| 14 | Y1 | bidirectional | Independent analog I/O channel 1. Connects to common Z when address = 001 and E is low. |+| 15 | Y2 | bidirectional | Independent analog I/O channel 2. Connects to common Z when address = 010 and E is low. |+| 16 | VDD | power_in | Positive supply, 3.0 V to 9.0 V (absolute max 12 V). Sets the positive rail for both the digital logic and the analog switch channels. Decouple to VSS with 100 nF close to the pin. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | GN Semic |+| Package | SOP-16 |+| Category | Interface |+| Pins | 16 |++## CAD (KiCad official)++- Symbol: `GN4051B`+- Footprint: `Package_SO:SOIC-16_3.9x9.9mm_P1.27mm`+- 3D model: SOP-16 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [GN Semic datasheet](docs/gn4051b-datasheet.pdf) (15 pp, sha256 `1357b3d1e1e4fd1c`, 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/gn4051b-datasheet.pdf)

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