The maximum operating frequency of the SN74HC7002D is 100 MHz.
Yes, the SN74HC7002D is compatible with 5V systems, but it's recommended to use a voltage regulator to ensure a stable 5V supply.
It's recommended to follow a controlled power-up and power-down sequence to prevent damage to the device. A slow ramp-up of the power supply voltage is recommended, and the device should be powered up in the following order: VCC, then VREF, then inputs.
It's recommended to follow good PCB design practices, such as using a solid ground plane, minimizing trace lengths, and avoiding vias under the device. A 4-layer PCB with a dedicated power plane is recommended.
The SN74HC7002D is rated for operation up to 85°C, but it's recommended to derate the device for operation above 70°C. Consult the datasheet for specific derating guidelines.