The 74hct14 is available from Digikey as a dip from several different manufacturers starting at $0.43 in singles and it is in stock The 74HCT family is a special version of 74HC with 74LS TTL-compatible inpu= ts so 74HCT can be safely mixed with 74LS in the same system. In fact 74HCT= can be used as low-power direct replacements for the older 74LS ICs in mos= t circuits. The minor disadvantage of 74HCT is a lower immunity to noise, b= ut this is unlikely to be a problem in most situations. Peter van Hoof ----- Original Message ---- > From: BOB > To: Microcontroller discussion list - Public. > Sent: Sun, February 21, 2010 6:45:01 PM > Subject: [EE] 7414 IC CHIP > = > Does any one know of a place to buy about 10 or 20 7414 HEX SCHMITT = TRIGGER = > INVERTERS.=A0 In the 14 pin DIP package.=A0 I need them to condition = > = parallel port output signal for CNC=A0 stepper motor drivers.=A0 I = > have = checked MOUSER, ALLIED AND DIGIKEY. They have a lot of surface = > mount stuff but are scarce to nonexistent on = the old DIP = > package. BOB -- = http://www.piclist.com PIC/SX FAQ & list = > archive View/change your membership options = > at http://mailman.mit.edu/mailman/listinfo/piclist = -- = http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist