型号 厂家 批号 封装    
s-a  s-b  s-c  s-d  s-e  s-f  s-g  s-h  s-i  s-j  s-k  s-l  s-m  s-n  s-o  s-p  s-q  s-r  s-s  s-t  s-u  s-v  s-w  s-x  s-y  s-z  s-0  s-1  s-2  s-3  s-4  s-5  s-6  s-7  s-8  s-9   
 74LS672N  74LS672DW  74LS672  74LS671DW  74LS671
 74LS670PC  74LS670P  74LS670NS  74LS670N  74LS670M
 74LS670J  74LS670DC  74LS670D  74LS670B1  74LS670
 74LS67  74LS669P  74LS669N  74LS669D  74LS669
 74LS668N  74LS668  74LS656N  74LS656B  74LS656AK
 74LS656AD  74LS656  74LS653  74LS652NT  74LS652NS
 74LS652ANT  74LS652  74LS651DW  74LS65  74LS64J
 74LS649DW  74LS648NT  74LS648  74LS647NT  74LS647DW
 74LS646NT  74LS646DW  74LS646  74LS645N  74LS645B1
 74LS6451N  74LS645-1D  74LS645-1  74LS645  74LS644N
 74LS644DW  74LS644-1N  74LS6441N  74LS644  74LS643N
 74LS643DW  74LS6431N  74LS643  74LS642P  74LS642NS
 74LS642N  74LS6421N  74LS6421DW  74LS642  74LS641N
 74ls641dw  74LS641D  74LS641-1P  74LS641-1N  74LS6411N
 74LS641  74LS640N  74LS640MEL  74LS640D  74LS6401N
 74LS6401DWR  74LS640-1DW  74LS640-1  74LS640/A  74ls640
 74LS64  74LS63N  74LS639N  74LS639DW  74LS639
 74LS638DW  74LS638  74LS631  74LS630  74LS63
 74LS629N  74LS629  74LS628N  74LS628  74LS627D
 74LS627  74LS626NS  74LS626N  74LS626  74LS625
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