component
SN74HC158DT
Public Made by Adomby adom
Texas Instruments Signal Switches, Multiplexers, Decoders, SOIC-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+52@@ -0,0 +1,52 @@+# SN74HC158DT++**Texas Instruments** · Signal Switches, Multiplexers, Decoders · SOIC-16++SN74HC158DT from Texas Instruments, in a SOIC-16. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | A/B | input | Data select input; low selects A inputs, high selects B inputs for all channels |+| 2 | 1A | input | Data input A for channel 1; selected when A/B is low |+| 3 | 1B | input | Data input B for channel 1; selected when A/B is high |+| 4 | 1Y | output | Inverted output for channel 1; outputs inverted data from selected input when G is low, high when G is high |+| 5 | 2A | input | Data input A for channel 2; selected when A/B is low |+| 6 | 2B | input | Data input B for channel 2; selected when A/B is high |+| 7 | 2Y | output | Inverted output for channel 2; outputs inverted data from selected input when G is low, high when G is high |+| 8 | GND | power_in | Ground; connection point for logic reference (0 V) |+| 9 | 3Y | output | Inverted output for channel 3; outputs inverted data from selected input when G is low, high when G is high |+| 10 | 3B | input | Data input B for channel 3; selected when A/B is high |+| 11 | 3A | input | Data input A for channel 3; selected when A/B is low |+| 12 | 4Y | output | Inverted output for channel 4; outputs inverted data from selected input when G is low, high when G is high |+| 13 | 4B | input | Data input B for channel 4; selected when A/B is high |+| 14 | 4A | input | Data input A for channel 4; selected when A/B is low |+| 15 | G | input | Strobe (output enable) input, active low; outputs are high when G is high, selected data routed to outputs when G is low |+| 16 | VCC | power_in | Supply voltage, positive power connection; operating voltage range 2 V to 6 V |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | SOIC-16 |+| Category | Logic |+| Pins | 16 |++## CAD (KiCad official)++- Symbol: `SN74HC158DT`+- Footprint: `Package_SO:SOIC-16_3.9x9.9mm_P1.27mm`+- 3D model: SOIC-16 (KiCad packages3D, STEP)+- 3D model files: `sn74hc158dt-etched.step` / `sn74hc158dt-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sn74hc158dt.step` / `sn74hc158dt.glb` are the bare package body.++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/sn74hc158) (19 pp, sha256 `2dab2a1df902eb79`, retrieved 2026-10-05, tier: lcsc)+- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-sonnet-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/sn74hc158dt-datasheet.pdf)
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