Was macht dieses IC?

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hallo zusammen
ich habe hier mehrere kisten voller bestimmten ics und habe aber keine ahnung diese genau machen. weis jemand von euch für diese zu brauchen sind und kann mir jemand einen plan (möglichst auf deutsch) dazu geben?

auf dem ic steht:

t340cr
sn74ls02n

das ding hat 2x 7 pins

http://lmgtfy.com/?q=sn74ls02n


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