Description
74HC139 IS A dual 2 to 4 line decoder/demultiplexer IC
Specification
- Propagation Delay Time: 145 ns at 2V / 25 ns at 6V
- Power Dissipation: 320 mW
- Output Current: 5.2 mA at 6 V
- No. of Inputs: 3X 3
- No. of Pins: 16
- Operating Temperature Range: -40°C to +125°C
- Supply Voltage Range: 2V to 6V
- Package: DIP-16
Logic Diagram
| Symbol | Pin | Description |
| 1E, 2E | 1, 15 | enable input (active LOW) |
| 1A0, 1A1 | 2,3 | address input |
| 1Y0, 1Y1, 1Y2, 1Y3 | 4,5,6,7 | output (active LOW) |
| GND | 8 | ground (0 V) |
| 2Y0, 2Y1, 2Y2, 2Y3 | 12,11,10,9 | output (active LOW) |
| 2A0, 2A1 | 14,13 | address input |
| VCC | 16 | positive supply voltage |
