SN74HC153 Dual 4-to-1 Mux

@@ -0,0 +1,62 @@+# SN74HC153++**Texas Instruments** · Multiplexer · SOIC-16++The SN74HC153 contains two independent 4-to-1 multiplexers with common select inputs and separate enables. Because the address lines are shared, the two halves route a 2-bit-wide word from one of four input pairs, useful for bus selection and data routing.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | 1G | input | Active-low strobe (enable) for mux 1. When high, output 1Y is forced low regardless of select or data inputs; when low, 1Y follows the selected 1Cn input. |+| 2 | B | input | Data-select input B (MSB), shared by both mux sections. Together with A, selects one of the four Cn data inputs per section. |+| 3 | 1C3 | input | Mux 1 data input 3. Routed to output 1Y when select inputs B,A = 1,1 and 1G is low. |+| 4 | 1C2 | input | Mux 1 data input 2. Routed to output 1Y when select inputs B,A = 1,0 and 1G is low. |+| 5 | 1C1 | input | Mux 1 data input 1. Routed to output 1Y when select inputs B,A = 0,1 and 1G is low. |+| 6 | 1C0 | input | Mux 1 data input 0. Routed to output 1Y when select inputs B,A = 0,0 and 1G is low. |+| 7 | 1Y | output | Mux 1 data output. Reproduces the selected 1Cn data input when 1G is low; forced low when 1G is high. ±6 mA drive at VCC = 5 V. |+| 8 | GND | power_in | Ground return. 0 V reference for supply and all I/O. |+| 9 | 2Y | output | Mux 2 data output. Reproduces the selected 2Cn data input when 2G is low; forced low when 2G is high. ±6 mA drive at VCC = 5 V. |+| 10 | 2C0 | input | Mux 2 data input 0. Routed to output 2Y when select inputs B,A = 0,0 and 2G is low. |+| 11 | 2C1 | input | Mux 2 data input 1. Routed to output 2Y when select inputs B,A = 0,1 and 2G is low. |+| 12 | 2C2 | input | Mux 2 data input 2. Routed to output 2Y when select inputs B,A = 1,0 and 2G is low. |+| 13 | 2C3 | input | Mux 2 data input 3. Routed to output 2Y when select inputs B,A = 1,1 and 2G is low. |+| 14 | A | input | Data-select input A (LSB), shared by both mux sections. Together with B, selects one of the four Cn data inputs per section. |+| 15 | 2G | input | Active-low strobe (enable) for mux 2. When high, output 2Y is forced low regardless of select or data inputs; when low, 2Y follows the selected 2Cn input. |+| 16 | VCC | power_in | Positive supply, 2 V to 6 V (5 V nominal). Bypass locally with a 100 nF ceramic to GND. |++## Key specifications++| Parameter | Value |+|---|---|+| Type | Dual 4-to-1 multiplexer / data selector |+| Logic family | 74HC (CMOS) |+| Select lines | Shared across both muxes |+| Supply voltage | 2 V to 6 V |+| Propagation delay | 18 ns typ at 5 V |+| Operating temperature | -40 C to 85 C |++## Ordering variants++- `SN74HC153D`+- `SN74HC153N`+- `SN74HC153NS`+- `SN74HC153PW`+- `SN74HC153J`+- `SN74HC153FK`++## CAD (KiCad official)++- Symbol: `sn74hc153.kicad_sym`+- Footprint: `sn74hc153.kicad_mod`+- 3D model: SOIC-16 body from KiCad `Package_SO/SOIC-16_3.9x9.9mm_P1.27mm`.++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/lit/ds/symlink/sn74hc153.pdf) (29 pp, sha256 `e90c95283a9c771c`, 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/sn74hc153-datasheet.pdf)

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