>>> ST Microelectronics HCF4068B too... >> >>Yes, but this is HCMOS, no 15V logic. > >No, ST prefixes their 4000B series with "HCF". It would be >"74HC-something" otherwise. I wish you were right! (because I have hundreds of these useless in a drawer) Philips HFE is 15V logic, but I'm afraid ST HCF is 5V (6.5V maximum). JH.