Texas Instruments
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8-channel analog multiplexer/demultiplexer. Turns one ADC input into eight, and passes signals in either direction.
| Part number | 74HC4051 |
|---|---|
| Manufacturer | Texas Instruments |
| Category | Integrated Circuits › Multiplexers & Decoders |
| Package | DIP-16 |
| Pins | 16 |
| Channels | 8 |
74HC4051 pinout
| Pin | Name | Type | Description |
|---|---|---|---|
| 1 | Y4 | passive | Channel 4 |
| 2 | Y6 | passive | Channel 6 |
| 3 | Z | passive | Common in/out |
| 4 | Y7 | passive | Channel 7 |
| 5 | Y5 | passive | Channel 5 |
| 6 | E | input | Enable, active low |
| 7 | VEE | power | Negative supply — tie to GND for single-supply use |
| 8 | GND | ground | Ground |
| 9 | S0 | input | Address bit 0 |
| 10 | S1 | input | Address bit 1 |
| 11 | S2 | input | Address bit 2 |
| 12 | Y3 | passive | Channel 3 |
| 13 | Y0 | passive | Channel 0 |
| 14 | Y1 | passive | Channel 1 |
| 15 | Y2 | passive | Channel 2 |
| 16 | VCC | power | Supply |
Schematic symbol and footprint
Schematic symbol
Footprint: DIP-16 — to scale, pad 1 in yellow (mm). Check against the datasheet before ordering PCBs.