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Onsemi DM74LS85N Environmental and export classification status description

The OnsemiDM74LS85N is a 4-bit magnitude comparator that performs comparison operations between two 4-bit binary numbers. It is part of the TTL (transistor-transistor logic) family of integrated circuits. Functions: - Compares two 4-bit binary numbers and determines their relationship (equal, greater than, or less than). - Has four output signals indicating the comparison result: A > B, A = B, A < B, and various status flags. - Can be cascaded for comparing longer binary numbers. Applications: - Used in digital systems for arithmetic and logical operations. - Comparator in microprocessor systems for decision-making processes. - Error detection and correction in memory systems. - Traffic light controllers and digital signal processing. Alternative Components: - 74HC85 (high-speed CMOS technology). - CD4585 (integrated up/down binary counter-comparator). Embedded Modules: - Onsemi provides the DM74LS85N as a standalone IC package for integration into various digital circuits. - Can be integrated into custom PCB designs for specific applications. - Often used in educational electronics kits for teaching digital logic concepts. Related Q&A: 1. Can the DM74LS85N handle signed numbers? - No, the DM74LS85N is a binary comparator, so it compares unsigned binary numbers. It does not inherently support signed numbers. 2. What is the maximum operating frequency of the DM74LS85N? - The maximum operating frequency is typically around 30-40 MHz, depending on the specific implementation and operating conditions. 3. How many DM74LS85N ICs are needed to compare two 8-bit numbers? - To compare two 8-bit numbers, you would need to cascade two DM74LS85N ICs. The first IC would compare the most significant bits, and the result would determine whether to compare the remaining less significant bits in the second IC. 4. Can the DM74LS85N be directly interfaced with a microcontroller? - Yes, the DM74LS85N can be interfaced with a microcontroller by connecting the input and output pins of the comparator to the appropriate GPIO pins of the microcontroller. 5. What are the typical power supply voltage and current requirements for the DM74LS85N? - The DM74LS85N typically operates at a 5V DC supply voltage and draws a few milliamperes of current during normal operation.