The maximum frequency of operation for the 74HCT125D is typically around 30-40 MHz, but this can vary depending on the specific application and operating conditions.
To ensure proper power and decoupling, connect the VCC pin to a stable 5V power supply, and decouple the power supply lines with 0.1uF ceramic capacitors as close to the device as possible. Additionally, use a 10uF electrolytic capacitor for bulk decoupling.
The 74HCT125D can sink or source up to 6mA per output pin, and up to 20mA total for all output pins combined.
Unused inputs on the 74HCT125D should be tied to a valid logic level (either VCC or GND) to prevent floating inputs and ensure proper device operation.
The 74HCT125D is designed for 5V operation, but it can be used with 3.3V logic levels with some limitations. The device will still function, but the output voltage levels may not be fully compatible with 3.3V logic, and the noise margin may be reduced.
