The SN74S85D is an integrated circuit (IC) component manufactured by Texas Instruments. It is a 4-bit magnitude comparator, designed to compare two 4-bit binary numbers and determine their relationship to each other. Here is a brief overview of the key features and functionalities of the SN74S85D:
1. Magnitude Comparison: The SN74S85D is primarily used for comparing two 4-bit binary numbers to determine whether they are equal, less than, or greater than each other. It performs logical operations on the input signals and produces corresponding output signals to indicate the result of the comparison.
2. 4-Bit Inputs: This IC component has two sets of 4-bit inputs, labeled as "A" and "B," which can accept binary numbers ranging from 0000 to 1111. These inputs represent the numbers that need to be compared.
3. Cascade Inputs/Outputs: In addition to the main inputs, the SN74S85D also features two cascade inputs (P and G) and two cascade outputs (PGa and PGb). These pins enable multiple SN74S85D components to be connected in cascade to compare larger binary numbers.
4. Output Indicators: The SN74S85D provides three output indicators - EQ, GT, and LT, representing equality, greater than, and less than, respectively. The EQ pin becomes active when the two input numbers are equal
