The maximum frequency of operation for the SN74HC126D is typically around 100 MHz, but this can vary depending on the specific application and operating conditions.
To ensure proper operation, the SN74HC126D should be powered from a stable, low-noise power supply, and decoupling capacitors (e.g. 0.1uF) should be placed as close as possible to the device's power pins.
The SN74HC126D can sink or source up to 25mA of current per output, but this should be limited to 15mA per output for reliable operation.
The input impedance of the SN74HC126D is typically around 10kΩ, while the output impedance is around 25Ω. These values should be taken into account when designing the surrounding circuitry.
The propagation delay of the SN74HC126D is typically around 10-15ns, but this can vary depending on the specific application and operating conditions.