At 02:15 PM 7/19/02 -0500, Pic Dude wrote: >Why do you say the low-side drivers are stronger than the high-side >drivers? The 16F87x datasheets say that the max current sourced by >an I/O pin = 25ma, and is the same as that sunk by any pin. Is >there more that matters here in an LED circuit? N-channel mosfets have a lower on-resistance than a similarly sized P-channel device. If you look closely at the pin output curves published in the data sheet, you will see that the saturation voltage is lower for a LO than a HI. It really doesn't matter if all you are doing is driving a single LED at 10 mA. dwayne -- Dwayne Reid Trinity Electronics Systems Ltd Edmonton, AB, CANADA (780) 489-3199 voice (780) 487-6397 fax Celebrating 18 years of Engineering Innovation (1984 - 2002) .-. .-. .-. .-. .-. .-. .-. .-. .-. .- `-' `-' `-' `-' `-' `-' `-' `-' `-' Do NOT send unsolicited commercial email to this email address. This message neither grants consent to receive unsolicited commercial email nor is intended to solicit commercial email. -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body