I buy 74hc14n and 74hct14n's from mouser by the bucketful, on a regular 
basis.

You should be able to drop in a 74hct14n or a 74ls14n without any problems.

-forrest

On 2/21/10 4:45 PM, BOB wrote:
> Does any one know of a place to buy about 10 or 20 7414 HEX SCHMITT
> TRIGGER INVERTERS.  In the 14 pin DIP package.  I need them to condition
> parallel port output signal for CNC  stepper motor drivers.  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
>    

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