The SN74AS280N is an integrated circuit (IC) component belonging to the 74-series family from Texas Instruments. It is an 9-bit parity generator/checker designed to perform error detection in digital systems. Let's delve into its key features and functionality.
1. Parity Generation:
The SN74AS280N is capable of generating odd or even parity for 9 binary inputs. The device continuously monitors the inputs and generates the parity bit accordingly. The generated parity bit is set to logic 1 if the number of high (logic 1) bits in the input is odd, and to logic 0 if the number of high bits is even.
2. Parity Checking:
Apart from generating parity, this IC component can also verify the correctness of received data by comparing it with the associated parity bit. It checks if the received data has the expected odd or even parity and raises an indication flag or an output signal if an error is detected, signifying that an error occurred during transmission.
3. Input and Output Pins:
SN74AS280N offers a total of 16 input/output pins, which can handle 9 data inputs, 3 control inputs, and 4 other I/O pins. The inputs include A0-A8 (9 data inputs), S0-S2 (control inputs for selection), and P0-P3 (other I/O pins). The chip is configured using these input pins for performing parity generation and checking
