The 74HC244 is a high-speed CMOS octal buffer and line driver IC with 3-state outputs, ideal for memory address driving, bus interfacing, and signal buffering in microcontroller-based systems.
The 74LS283 is a high-speed 4-bit binary full adder IC with built-in carry-in and carry-out functionality. It performs fast arithmetic addition on binary numbers and is widely used in ALUs, calculators, and embedded control systems.