40 pin wide DIP >NAME >VALUE CRYSTAL RESONATOR >NAME >VALUE 1 CRYSTAL RESONATOR >NAME >VALUE 1 Single In Line >NAME >VALUE 1 Single In Line >NAME >VALUE 1 Single In Line >NAME >VALUE 1 PIN HEADER 1 >NAME >VALUE 40 Dual In Line Package 0.6 inch >NAME >VALUE THROUGH-HOLE PAD >NAME >VALUE TTL Devices, 74xx Series with US Symbols Based on the following sources: <ul> <li>Texas Instruments TTL Data Book   Volume 1, 1996. <li>TTL Data Book, Volume 2 , 1993 <li>National Seminconductor Databook 1990, ALS/LS Logic <li>ttl 74er digital data dictionary, ECA Electronic + Acustic GmbH, ISBN 3-88109-032-0 <li>http://icmaster.com/ViewCompare.asp </ul> <author>Created by librarian@cadsoft.de</author> Dual In Line Package >NAME >VALUE Dual In Line Package >NAME >VALUE Dual In Line Package >NAME >VALUE EAGLE Design Rules The default Design Rules have been set to cover a wide range of applications. Your particular design may have different requirements, so please make the necessary adjustments and save your customized design rules under a new name.