The maximum operating frequency of the CD74HCT125M96 is 50 MHz.
Yes, the CD74HCT125M96 is compatible with 5V systems, but it's recommended to use a voltage regulator to ensure a stable 5V supply.
It's recommended to power up the CD74HCT125M96 after the power supply has stabilized, and to power down the device before the power supply is turned off.
The recommended termination scheme for the CD74HCT125M96 is to use a 50-ohm termination resistor at the output of each buffer.
The CD74HCT125M96 is rated for operation up to 125°C, but it's recommended to derate the device's performance at high temperatures to ensure reliability.