----- Original Message ----- From: "Peter Onion" To: Sent: Monday, January 14, 2002 12:14 PM Subject: [EE]: Buffer to drive T1CLK at 5.5Mhz from 1.2v pk-pk source > Sorry for the repost, typo in subject ! > > Folks, > > I have a need to drive the timer1 clock input at 5-5.5Mhz from a lowish > impedance source of about 1.2v pk-pk. > > Currently I have a discrete amplifier (which seems to take excessive current) > but I would prefere an IC device of some sort. > > Any personal preferencies for a suitable (easily sourced in the UK) device ? You could use a CMOS inverter (e.g. 74HC00) with the signal passing through a capacitor into the first gate. Maybe you would need resistors to bias the input. If the output of the first gate isn't square enough, send it through some more gates. There are usually six in a package. /\/\/\/*=Martin -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.