I would imagine that the LS chips are expensive because they are obsolete. I used them because they were in my junk drawer. I would recommend using the HCT series.
I see that the pin names have changed a bit from the old datasheets. STCP = Storage Register Clock, I referred to as 'Latch', formerly 'RCLK' SHCP = Shift register clock, formerly 'SRClock' DS = Serial data Input, formerly 'Ser' PL = Parallel Load, formerly 'SRLoad' -Kip On Tue, Feb 5, 2013 at 1:33 PM, <kqt4a...@gmail.com> wrote: > On Tue, 5 Feb 2013, Roland Jollivet wrote: > > > On 5 February 2013 16:11, Ralph Stirling <ralph.stirl...@wallawalla.edu > >wrote: > > > >> Digikey.com . You also might consider 74HC595, 74HC497, or > >> 74AHC595 and 74AHC597. > >> > >> -- Ralph > >> > >> > > Don't use 74HC parts. Use 74HCT as these are TTL compatible. HC parts > need > > to be driven closer to the rail, and often don't switch unless driven by > > CMOS chips. > > > > Otherwise find a similar part in the CD4xxx series. They switch at Vcc/2. > > > > great i see 74HCT597N for $0.70 and 74HCT595N for $0.80 on mouser > the ls 74ls59[57] are $10.00 each > does the type of inverter matter > > thanks > richard > > > ------------------------------------------------------------------------------ > Free Next-Gen Firewall Hardware Offer > Buy your Sophos next-gen firewall before the end March 2013 > and get the hardware for free! Learn more. > http://p.sf.net/sfu/sophos-d2d-feb > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ Free Next-Gen Firewall Hardware Offer Buy your Sophos next-gen firewall before the end March 2013 and get the hardware for free! Learn more. http://p.sf.net/sfu/sophos-d2d-feb _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
