The maximum operating frequency of the SN74ACT14NSR is 100 MHz.
Yes, the SN74ACT14NSR is 5V tolerant, meaning it can accept input voltages up to 5.5V even though its recommended operating voltage is 3.3V.
The propagation delay of the SN74ACT14NSR is typically around 3.5 ns, but it can vary depending on the operating conditions and load capacitance.
Yes, the SN74ACT14NSR can operate at 2.5V, but its output voltage levels may not be as strong as when operating at 3.3V, and its propagation delay may be slightly longer.
Yes, the SN74ACT14NSR is available in a lead-free package, which is RoHS compliant and suitable for use in environmentally friendly designs.