# 74HC151M

**HGSEMI** · Signal Switches, Multiplexers, Decoders · SOP-16

74HC151M from HGSEMI, in a SOP-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 | D3 | input | Data input 3, selected when select inputs C B A = L H H. |
| 2 | D2 | input | Data input 2, selected when select inputs C B A = L H L. |
| 3 | D1 | input | Data input 1, selected when select inputs C B A = L L H. |
| 4 | D0 | input | Data input 0, selected when select inputs C B A = L L L. |
| 5 | Y | output | Non-inverting multiplexer output; goes low when strobe is high. |
| 6 | W | output | Inverting multiplexer output; goes high when strobe is high. |
| 7 | ST | input | Active-low strobe input; low transfers selected data to outputs, high forces Y low and W high regardless of data or select inputs. |
| 8 | GND | power_in | Ground, 0 V reference. |
| 9 | C | input | Select address input C (most significant bit) of the three-bit data selector. |
| 10 | B | input | Select address input B of the three-bit data selector. |
| 11 | A | input | Select address input A (least significant bit) of the three-bit data selector. |
| 12 | D7 | input | Data input 7, selected when select inputs C B A = H H H. |
| 13 | D6 | input | Data input 6, selected when select inputs C B A = H H L. |
| 14 | D5 | input | Data input 5, selected when select inputs C B A = H L H. |
| 15 | D4 | input | Data input 4, selected when select inputs C B A = H L L. |
| 16 | VCC | power_in | Supply voltage, operating range 2.0 to 6.0 V (absolute maximum -0.5 to 7.0 V). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | HGSEMI |
| Package | SOP-16 |
| Category | Logic |
| Pins | 16 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Supply voltage | VCC | -0.5 |  | 7 | V |  | 4 |
| Input voltage | VIN | -0.5 |  |  | V | Printed as -0.5 to VCC + 0.5; max is VCC + 0.5 V | 4 |
| Output voltage | VOUT | -0.5 |  |  | V | Printed as -0.5 to VCC + 0.5; max is VCC + 0.5 V | 4 |
| Input diode current | IIK |  |  | 20 | mA |  | 4 |
| Output diode current | IOK |  |  | 20 | mA |  | 4 |
| Output current | IOUT |  |  | 25 | mA |  | 4 |
| VCC/ground current | ICC |  |  | 50 | mA |  | 4 |
| Power dissipation | PD |  |  | 500 | mW | Note 1: derates linearly -8 mW/ above 85 | 4 |
| Storage temperature | Tstg | -65 |  | 150 | °C |  | 4 |
| Soldering temperature | TL |  |  | 245 | °C |  | 4 |
| Supply voltage | VCC | 2 |  | 6 | V |  | 4 |
| Input voltage | VIN | 0 |  |  | V | Printed as 0 to VCC; max is VCC | 4 |
| Output voltage | VOUT | 0 |  |  | V | Printed as 0 to VCC; max is VCC | 4 |
| Operating temperature | Topr | -40 |  | 85 | °C |  | 4 |
| Input rise and fall times | tr,tf | 0 |  | 50 | µs |  | 4 |
| High-level input voltage | VIH | 1.5 |  |  | V | VCC = 2.0 V, Ta = 25°C | 5 |
| High-level input voltage | VIH | 3.15 |  |  | V | VCC = 4.5 V, Ta = 25°C | 5 |
| High-level input voltage | VIH | 4.2 |  |  | V | VCC = 6.0 V, Ta = 25°C | 5 |
| Low-level input voltage | VIL |  |  | 0.5 | V | VCC = 2.0 V, Ta = 25°C | 5 |
| Low-level input voltage | VIL |  |  | 1.35 | V | VCC = 4.5 V, Ta = 25°C | 5 |
| Low-level input voltage | VIL |  |  | 1.8 | V | VCC = 6.0 V, Ta = 25°C | 5 |
| High-level output voltage | VOH | 1.9 | 2 |  | V | VIN = VIH or VIL, IOH = -20µA, VCC = 2.0 V, Ta = 25°C | 5 |
| High-level output voltage | VOH | 4.4 | 4.5 |  | V | VIN = VIH or VIL, IOH = -20µA, VCC = 4.5 V, Ta = 25°C | 5 |
| High-level output voltage | VOH | 5.9 | 6 |  | V | VIN = VIH or VIL, IOH = -20µA, VCC = 6.0 V, Ta = 25°C | 5 |
| High-level output voltage | VOH | 4.18 | 4.31 |  | V | VIN = VIH or VIL, IOH = -4 mA, VCC = 4.5 V, Ta = 25°C | 5 |
| High-level output voltage | VOH | 5.68 | 5.8 |  | V | VIN = VIH or VIL, IOH = -5.2 mA, VCC = 6.0 V, Ta = 25°C | 5 |
| Low-level output voltage | VOL |  | 0 | 0.1 | V | VIN = VIH or VIL, IOL = 20µA, VCC = 2.0 V, Ta = 25°C | 5 |
| Low-level output voltage | VOL |  | 0.17 | 0.26 | V | VIN = VIH or VIL, IOL = 4 mA, VCC = 4.5 V, Ta = 25°C | 5 |
| Low-level output voltage | VOL |  | 0.18 | 0.26 | V | VIN = VIH or VIL, IOL = 5.2 mA, VCC = 6.0 V, Ta = 25°C | 5 |
| Input leakage current | IIN | -0.1 |  | 0.1 | µA | VIN = VCC or GND, VCC = 6.0 V, Ta = 25°C | 5 |
| Quiescent supply current | ICC |  |  | 4 | µA | VIN = VCC or GND, VCC = 6.0 V, Ta = 25°C | 5 |
| High-level output voltage | VOH | 1.9 |  |  | V | VIN = VIH or VIL, IOH = -20µA, VCC = 2.0 V, Ta = -40 to 85°C | 5 |
| High-level output voltage | VOH | 4.4 |  |  | V | VIN = VIH or VIL, IOH = -20µA, VCC = 4.5 V, Ta = -40 to 85°C | 5 |
| High-level output voltage | VOH | 5.9 |  |  | V | VIN = VIH or VIL, IOH = -20µA, VCC = 6.0 V, Ta = -40 to 85°C | 5 |
| High-level output voltage | VOH | 4.13 |  |  | V | VIN = VIH or VIL, IOH = -4 mA, VCC = 4.5 V, Ta = -40 to 85°C | 5 |
| High-level output voltage | VOH | 5.63 |  |  | V | VIN = VIH or VIL, IOH = -5.2 mA, VCC = 6.0 V, Ta = -40 to 85°C | 5 |
| Low-level output voltage | VOL |  |  | 0.1 | V | VIN = VIH or VIL, IOL = 20µA, VCC = 2.0 V, Ta = -40 to 85°C | 5 |
| Low-level output voltage | VOL |  |  | 0.33 | V | VIN = VIH or VIL, IOL = 4 mA, VCC = 4.5 V, Ta = -40 to 85°C | 5 |
| Input leakage current | IIN | -1 |  | 1 | µA | VIN = VCC or GND, VCC = 6.0 V, Ta = -40 to 85°C | 5 |
| Quiescent supply current | ICC |  |  | 40 | µA | VIN = VCC or GND, VCC = 6.0 V, Ta = -40 to 85°C | 5 |
| Output transition time | tTLH,tTHL |  | 4 | 8 | ns | CL = 15 pF, VCC = 5 V, Ta = 25°C, tr = tf = 6 ns | 6 |
| Propagation delay time (D-Y) | tPLH,tPHL |  | 15 | 24 | ns | CL = 15 pF, VCC = 5 V, Ta = 25°C, tr = tf = 6 ns | 6 |
| Propagation delay time (D-W) | tPLH,tPHL |  | 15 | 24 | ns | CL = 15 pF, VCC = 5 V, Ta = 25°C, tr = tf = 6 ns | 6 |
| Propagation delay time (ST-Y) | tPLH,tPHL |  | 10 | 17 | ns | CL = 15 pF, VCC = 5 V, Ta = 25°C, tr = tf = 6 ns | 6 |
| Propagation delay time (ST-W) | tPLH,tPHL |  | 10 | 17 | ns | CL = 15 pF, VCC = 5 V, Ta = 25°C, tr = tf = 6 ns | 6 |
| Propagation delay time (A, B, C-Y) | tPLH,tPHL |  | 19 | 31 | ns | CL = 15 pF, VCC = 5 V, Ta = 25°C, tr = tf = 6 ns | 6 |
| Propagation delay time (A, B, C-W) | tPLH,tPHL |  | 19 | 31 | ns | CL = 15 pF, VCC = 5 V, Ta = 25°C, tr = tf = 6 ns | 6 |
| Input capacitance | CIN |  | 3 |  | pF |  | 6 |
| Power dissipation capacitance | CPD |  | 15 |  | pF | See Note 1: CPD defined from ICC(opr) = CPD·VCC·fIN + ICC | 6 |

## CAD (KiCad official)

- Symbol: `74HC151M`
- Footprint: `Package_SO:SOIC-16_3.9x9.9mm_P1.27mm`
- 3D model: SOP-16 (KiCad packages3D, STEP)
- 3D model files: `74hc151m-etched.step` / `74hc151m-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `74hc151m.step` / `74hc151m.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [HGSEMI datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603381378092449792) (11 pp, sha256 `dad25d94844fc833`, retrieved 2026-10-18, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-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/74hc151m-datasheet.pdf)