At 05:27 AM 2/22/2005, brusque@HotPOP.com wrote: >Hello, > > I'm working on a project that is basically a high intensity LED sign. > My actual design is using some 74HC595 to power the LEDs the LEDs: > > However, the maximum currente at the '595 outputs are 6-8mA and I > need to power the LEDs with 20mA, to have more luminosity. TI supplies a nice part for this: TPIC6595 or TPIC6C595 (different pinouts, unfortunately). I use *lots* of the TPIC6595 here and they are *wonderful* ! We had many problems with the similar TPIC6B595 (notice the "B" in the part number) and we don't use them anymore. dwayne -- Dwayne Reid Trinity Electronics Systems Ltd Edmonton, AB, CANADA (780) 489-3199 voice (780) 487-6397 fax Celebrating 20 years of Engineering Innovation (1984 - 2004) .-. .-. .-. .-. .-. .-. .-. .-. .-. .- `-' `-' `-' `-' `-' `-' `-' `-' `-' 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 PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist