The hex buffer is really just a voltage logic level shifter for 5v0 microcontrollers to talk to 3v3 devices with 6 input/outputs (hex). The MAX232 is for legacy PC serial to TTL communications (Liken to a FTDI).
The hex buffer is really just a voltage logic level shifter for 5v0 microcontrollers to talk to 3v3 devices with 6 input/outputs (hex). The MAX232 is for legacy PC serial to TTL communications (Liken to a FTDI).