SN74HC148N (74HC148)
Description:
The SN74HC148N is a high-speed CMOS 8-to-3 line priority encoder. This device accepts data from up to eight active-low inputs (A0 to A7) and provides a binary representation of the highest priority active input on a 3-bit output (Y0 to Y2). The SN74HC148N also features an active-low enable input (EI) and an active-low enable output (EO), which can be used for cascading multiple encoders to handle larger input sets.
Key Features:
- 8-to-3 line priority encoder
- High-speed CMOS technology
- Active-low inputs and outputs
- Enable input and output for cascading
- Wide operating voltage range: 2V to 6V
- Low power consumption
- High noise immunity
- Standard 16-pin DIP package
- Package Type: 16-pin DIP
- Supply Voltage (V_CC): 2V to 6V
- Input Voltage (V_IN): 0V to V_CC
- Output Voltage (V_OUT): 0V to V_CC
- Input High Voltage (V_IH): 3.15V (minimum) at V_CC = 6V
- Input Low Voltage (V_IL): 1.35V (maximum) at V_CC = 6V
- Output Current (I_O): ±25mA
- Quiescent Supply Current (I_CC): 8µA (maximum)
- Propagation Delay Time: 24ns (typical) at V_CC = 5V, C_L = 15pF
- Operating Temperature Range: -40°C to +85°C
- Data Selection: Prioritizing and encoding multiple data inputs.
- Signal Multiplexing: Combining multiple signals into a single line.
- Digital Systems: Implementing priority logic in microprocessors and other digital circuits.
- Control Systems: Selecting control signals based on priority.