On 4/18/2018 3:15 PM, Magnus Danielson wrote: > > The real benefit of the 4044 and 4046 lies in that they where CMOS > devices and integrated well with other CMOS devices, and could help to The original MC4044 is TTL, not CMOS. There is a CMOS "CD4044" but it is something completely different, not even a phase detector at all. Rick N6RK