| Integrated Circuits |
|---|
| 74139 |
|---|
| Dual 2-to-4 line decoder/demultiplexer |
| PDF datasheet |
| 1E | 1 • | 16 | Vcc |
| 1A0 | 2 | 15 | 2E |
| 1A1 | 3 | 14 | 2A0 |
| 1Y 0 | 4 | 13 | 2A1 |
| 1Y 1 | 5 | 12 | 2Y 0 |
| 1Y 2 | 6 | 11 | 2Y 1 |
| 1Y 3 | 7 | 10 | 2Y 2 |
| GND | 8 | 9 | 2Y 3 |
| Pin | Symbol | Description |
|---|---|---|
| 1 | 1E | enable input (active low) |
| 2 | 1A0 | address input |
| 3 | 1A1 | address input |
| 4 | 1Y 0 | output (active low) |
| 5 | 1Y 1 | output (active low) |
| 6 | 1Y 2 | output (active low) |
| 7 | 1Y 3 | output (active low) |
| 8 | GND | ground |
| 9 | 2Y 3 | output (active low) |
| 10 | 2Y 2 | output (active low) |
| 11 | 2Y 1 | output (active low) |
| 12 | 2Y 0 | output (active low) |
| 13 | 2A1 | address input |
| 14 | 2A0 | address input |
| 15 | 2E | enable input (active low) |
| 16 | Vcc | supply voltage |
| Specifications |
|---|
| (typical values under recommended operating conditions, unless specified) |
| Parameter | Value | Unit |
|---|---|---|
| Propagation delay, nAn to nY n |
11 (74HC) 13 (74HCT) |
ns |
| Propagation delay, nE to nY n |
10 (74HC) 13 (74HCT) |
ns |
| Note |
|---|
| Data is maintained by an independent source and accuracy is not guaranteed. Check with the manufacturer's datasheet for up-to-date information. |
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