BH-5 and CH-5 chips are 5ns chips, which is slower than 4.6ns.It absolute maximum voltage is quite high 3.6V you shouldn't however get too excited since it is absolute maximum and not meant for 24/7 use. Even if chips could take 3.6V, PCB is not designed for voltages over 2.8V so beware.Původně odeslal 3G@L