U74HC4051G-S16-R

@@ -0,0 +1,61 @@+# U74HC4051G-S16-R++**UTC Unisonic Tech** · Analog Switches, Multiplexers · SOIC-16++U74HC4051G-S16-R from UTC Unisonic Tech, 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 | Y4 | bidirectional | Analog channel 4 input/output. Connected to common Z pin when S2=H, S1=L, S0=L and E=L. Signal voltage may swing between VEE and VCC. |+| 2 | Y6 | bidirectional | Analog channel 6 input/output. Connected to common Z pin when S2=H, S1=H, S0=L and E=L. Signal voltage may swing between VEE and VCC. |+| 3 | Z | bidirectional | Common analog input/output (multiplexer common terminal). Connects to the selected Yn channel per the S2/S1/S0 select code when E is low. |+| 4 | Y7 | bidirectional | Analog channel 7 input/output. Connected to common Z pin when S2=H, S1=H, S0=H and E=L. Signal voltage may swing between VEE and VCC. |+| 5 | Y5 | bidirectional | Analog channel 5 input/output. Connected to common Z pin when S2=H, S1=L, S0=H and E=L. Signal voltage may swing between VEE and VCC. |+| 6 | E | input | Active-low enable input (E-bar). When low, the selected channel is connected to Z; when high, all channels are disconnected (high impedance). |+| 7 | VEE | power_in | Negative analog supply voltage. Typically 0V for single-supply digital use, or negative (e.g. -5V) to allow bipolar analog signals. VCC-VEE range 2.0V to 10.0V. |+| 8 | GND | power_in | Digital ground / logic reference for the S0/S1/S2 and E select inputs. VCC-GND recommended range 2.0V to 10.0V. |+| 9 | S2 | input | Digital channel-select input (MSB). Combined with S1 and S0, selects one of eight Y0-Y7 channels to connect to Z. |+| 10 | S1 | input | Digital channel-select input. Combined with S2 and S0, selects one of eight Y0-Y7 channels to connect to Z. |+| 11 | S0 | input | Digital channel-select input (LSB). Combined with S2 and S1, selects one of eight Y0-Y7 channels to connect to Z. |+| 12 | Y3 | bidirectional | Analog channel 3 input/output. Connected to common Z pin when S2=L, S1=H, S0=H and E=L. Signal voltage may swing between VEE and VCC. |+| 13 | Y0 | bidirectional | Analog channel 0 input/output. Connected to common Z pin when S2=L, S1=L, S0=L and E=L. Signal voltage may swing between VEE and VCC. |+| 14 | Y1 | bidirectional | Analog channel 1 input/output. Connected to common Z pin when S2=L, S1=L, S0=H and E=L. Signal voltage may swing between VEE and VCC. |+| 15 | Y2 | bidirectional | Analog channel 2 input/output. Connected to common Z pin when S2=L, S1=H, S0=L and E=L. Signal voltage may swing between VEE and VCC. |+| 16 | VCC | power_in | Positive digital/analog supply voltage. Absolute maximum -0.5V to +11.0V; recommended VCC-GND and VCC-VEE ranges 2.0V to 10.0V. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | UTC Unisonic Tech |+| Package | SOIC-16 |+| Category | Interface |+| Pins | 16 |++## Ordering variants++- `U74HC4051G-S16-R`+- `U74HC4051G-S16-RG-S16-T`+- `U74HC4051G-S16-RL-D16-T`+- `U74HC4051G-S16-RG-D16-T`+- `U74HC4051G-S16-RG-P16-T`+- `U74HC4051G-S16-RG-P16-R`+- `U74HC4051G-S16-RG-Q16-3030-R`++## CAD (KiCad official)++- Symbol: `U74HC4051G-S16-R`+- 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:** [UTC Unisonic Tech datasheet](docs/u74hc4051g-s16-r-datasheet.pdf) (9 pp, sha256 `12893df6b8c478bb`, 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/u74hc4051g-s16-r-datasheet.pdf)

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