The SN74HC148ANSR is an integrated circuit (IC) component used as a high-speed 8-line to 3-line priority encoder. It is commonly used to encode the highest priority input line among the eight possible options, providing a binary representation of the active input line. This IC is manufactured by Texas Instruments, and it belongs to the 74HC family of ICs.
Key features of the SN74HC148ANSR include:
1. 8-line input: The IC has eight input lines (A0-A7) that can be used to connect various input sources. These input lines represent different priority levels.
2. 3-line output: It has three output lines (Y0-Y2) that provide a binary representation of the highest priority input line. The binary code on these lines depends on which input line is active and holds the highest priority.
3. Priority encoding: The IC performs priority encoding, which means that if multiple input lines are active at the same time, it will encode the one with the highest priority. The priority order is determined by the input line numbers, with A0 being the lowest priority and A7 being the highest.
4. Active low inputs: The inputs (A0-A7) are active low, which means that a logic high signal on an input line indicates an active state, whereas a logic low signal denotes an inactive state
