AED 8.30
1
Description
The 74LS148 IC offers a versatile solution with its wide working voltage range and compatibility with CMOS, NMOS, and TTL interfaces. The output consistently adheres to TTL standards, facilitating seamless integration with other TTL devices and microcontrollers. Equipped with a built-in Schottky barrier diode, the 74LS148 ensures high-speed processing. Its standout feature is priority decoding, guaranteeing that only the highest-order data line is encoded. In scenarios where multiple inputs are active simultaneously, the input with the highest priority takes precedence.
Specifications:
- Technology Family: LS
- Rating: Catalog
- Supply Voltage: 4.75V to 5.5V
- Frequency at Nominal Voltage: 35 MHz
- Typical Propagation Delay: 21nS
- Low Power Consumption: 32mW
- ESD Protection
- Operating Temperature: 0ºC to 70ºC
- ESD CDM (kV): 0.75
- ESD HBM (kV): 2
- Balanced Propagation Delays
- Designed Specifically for High Speed
- IOL (Max): 8mA
- IOH (Max): -0.4mA
- Bits (#): 3
- Configuration: 8:3
- Product Type: Standard
74LS148 Pinout:
| Pin No | Pin Name | Description |
|---|---|---|
| 1 | 4 | Octal Input Pin 1 |
| 2 | 5 | Octal Input Pin 2 |
| 3 | 6 | Octal Input Pin 3 |
| 4 | 7 | Octal Input Pin 4 |
| 5 | E1 | Active Low Enable Pin |
| 6 | A2 | Binary Output Pin A2 |
| 7 | A1 | Binary Output Pin A1 |
| 8 | GND | Ground |
| 9 | A0 | Binary Output Pin A0 |
| 10 | 0 | Octal Input Pin 10 |
| 11 | 1 | Octal Input Pin 11 |
| 12 | 2 | Octal Input Pin 12 |
| 13 | 3 | Octal Input Pin 13 |
| 14 | GS | Gray Output Pin GS |
| 15 | EO | Gray Output Pin EO |
| 16 | Vcc | Chip Supply Voltage |
Applications:
- Control of interrupt requests by acting on the highest priority request.
- Encoding the output of a flash analog-to-digital converter.