Actually ceramic caps would be even better, assuming they are 1=B5f as th= e electrolytics are usually speced. Electrolytics are specified because o= nly a few years ago they were the only game in town for 1=B5f or larger o= ther than Tantalum which while they will work, many on this list will poi= nt out reasons not to use them. KF4HAZ - Lonnie ----- From: "Chistyakov Boris" Dear All, >=20 > When I am looking at RS232 - TTL converter datasheets like MAX232 or ST= 232, > I see that all the capacitors are electrolytic. Is it mandatory or I ca= n use > ceramic capacitors instead ? >=20 > Thanks, > Boris Chistyakov > boris@rtamc.ru > -- --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist