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 MAX232 IC is a dual EIA-232 driver and receiver line bus IC in a DIP-16 package. It converts TTL/CMOS logic levels to RS-232 voltage levels, enabling reliable communication between microcontrollers, PCs, and serial devices.