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

Technical Specifications:

• 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

Applications:

• 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.

Datasheet: For detailed technical information, refer to the SN74HC148N datasheet.