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74LS156 Dual 2-to-4 Decoder (OC)
74LS156
Texas Instrumentsic logic
The 74LS156 is a dual 2-to-4 decoder/demultiplexer used for decoding binary input to select one of four outputs.
In stock
Specifications
3- Operating Voltage
- 5.0 V to 12 V
- Supply Current
- 4 mA max
- Package
- CDIP, CFP, PDIP, SOIC
Pinout
16Low source legibility.The original manufacturer datasheet for this part was difficult to read, so this pinout may be incomplete or imperfect. Always confirm against the specific manufacturer’s datasheet before wiring.
| Pin | Name | Functions | Notes |
|---|---|---|---|
| 1 | VCC | POWER | Supply voltage |
| 2 | A0 | GPIO | Input A0 for decoding |
| 3 | A1 | GPIO | Input A1 for decoding |
| 4 | GND | GND | Ground reference |
| 5 | B0 | GPIO | Input B0 for decoding |
| 6 | B1 | GPIO | Input B1 for decoding |
| 7 | Y0 | GPIO | Output Y0 selected when A0 and A1 are 00 |
| 8 | Y1 | GPIO | Output Y1 selected when A0 and A1 are 01 |
| 9 | Y2 | GPIO | Output Y2 selected when A0 and A1 are 10 |
| 10 | Y3 | GPIO | Output Y3 selected when A0 and A1 are 11 |
| 11 | OE | GPIO | Enable output, active low |
| 12 | ENB | GPIO | Enable input, active high |
| 13 | VSS | GND | Ground reference (alternative to GND) |
| 14 | VCC | POWER | Supply voltage |
| 15 | GND | GND | Ground reference (alternative to GND) |
| 16 | VCC | POWER | Supply voltage |
Interactive pinout
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74LS156
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