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Rochester Electronics CD74HC85NS Environmental and export classification status description

The Texas Instruments CD74HC85NS is a 4-bit magnitude comparator designed in CMOS technology. It provides a fast method of comparing two 4-bit binary or BCD numbers. This IC performs comparison in accordance with the AB logical conditions. Functions: 1. Compares two 4-bit binary or BCD numbers 2. Indicates if one number is less than, equal to, or greater than the other 3. Provides fast comparison with minimal propagation delay 4. Supports a wide range of digital applications requiring comparison of binary values Applications: 1. Arithmetic logic units (ALUs) 2. Digital calculators 3. Microcontroller systems 4. Decoder circuits 5. Electronic control units (ECUs) Alternative Components: 1. SN74HC85: Similar 4-bit magnitude comparator from Texas Instruments 2. 74LS85: 4-bit magnitude comparator from various manufacturers like Fairchild, ON Semiconductor, etc. 3. 74F85: 4-bit magnitude comparator from various manufacturers like Philips, Nexperia, etc. Embedded Modules: The Texas Instruments CD74HC85NS can be integrated into various embedded systems for digital logic applications. It can be used in conjunction with microcontrollers, FPGAs, or ASICs to facilitate comparison operations within the system. Related Q&A: 1. How does the CD74HC85NS differ from the CD74HC83? The CD74HC85NS is a 4-bit magnitude comparator, while the CD74HC83 is a 4-bit full adder. The former is used for comparison operations, while the latter is used for arithmetic addition. 2. What is the power supply voltage range for the CD74HC85NS? The CD74HC85NS typically operates within a voltage range of 2V to 6V, making it suitable for both TTL and CMOS logic level applications. 3. Can the CD74HC85NS be cascaded for comparing larger bit numbers? Yes, multiple CD74HC85NS ICs can be cascaded to compare larger bit numbers. By chaining the outputs of one comparator to the inputs of another, you can compare 8-bit, 12-bit, or larger numbers. 4. How does the propagation delay of the CD74HC85NS affect system performance? The low propagation delay of the CD74HC85NS ensures quick comparison operations, making it suitable for high-speed applications like digital signal processing and real-time systems that require rapid decision-making based on binary values. 5. What are the typical output states of the CD74HC85NS for the AB conditions? For AB, the output is "A>B" (A greater than B). These output states help in determining the relationship between the input binary numbers.