74LS Series ICs are High-Speed Logic gates, ideally a little faster than the 74HC series but more power consumption is required. They are implemented with a Low-Power Schottky diode technology to achieve high switching speed. 74LS148 is one of the 74LS series IC. 74LS148 ICs contain an 8 to 3-Bit priority encoder that converts 8 Data Lines to 3-Line binary. Cascading circuitry (enable input EI and enable output EO) has been provided to allow octal expansion without the need for external circuitry.
Specification:
| Operating Voltage Range | 4.5 V to 5.5 V |
| Package | DIP−16 |
| Input Current | 0.2 mA |
| Powering Current | 20 mA |
| Propagation Delay | 15 ns |
| Temperature Range | -65 °C – 150 °C |
Pin Configuration:
| Input ([0:8]) | 10, 11, 12, 13, 1, 2, 3, 4 |
| Output (A0, A1, A2) | 9, 7, 6 |
| Enable Input (EI) | 5 |
| Enable Output (EO) | 15 |
| Low Group Signal (GS’) | 14 |
| Power Supply (VCC) | 16 |
| Ground (GND) | 8 |
Packing list:
- 1x 74LS148 3-Bit Priority Encoder IC (74148 IC) DIP-16 in Pakistan
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