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   
 SN74S260NS  SN74S260N  SN74S260J  SN74S260DR  SN74S260DE4
 SN74S260D  SN74S260  SN74S25J  SN74S25IN  SN74S259J
 SN74S258N  SN74S258J  SN74S258DR  SN74S258  SN74S257NS
 SN74S257NE4  SN74S257N  SN74S257J  SN74S257D  SN74S255N
 SN74S255J  SN74S253N  SN74S253J  SN74S251N  SN74S251J
 SN74S250N  SN74S24IN  SN74S24IJ  SN74S247N  SN74S245J
 SN74S244N (74LS244)  SN74S244N  SN74S244JTB  SN74S244J  SN74S244DWR
 SN74S244DWE4  SN74S244DW  SN74S244D  SN74S244  SN74S243N
 SN74S243J  SN74S241N-K  SN74S241N3  SN74S241N  SN74S241J
 SN74S241DWR  SN74S241DWE4  SN74S241DW  SN74S241  SN74S240N
 SN74S240JCSR  SN74S240J-B  SN74S240J  SN74S240DWR  SN74S240DW
 SN74S240  SN74S23J  SN74S22N  SN74S22J  SN74S225N
 SN74S225J  SN74S225  SN74S221J  SN74S221  SN74S21J
 SN74S20NS  SN74S20NE4  SN74S20N  SN74S20J  SN74S20DR
 SN74S20D  SN74S20A  SN74S201N  SN74S201J  SN74S200J
 SN74S20  SN74S197N  SN74S197J  SN74S197  SN74S196N
 SN74S196J  SN74S196  SN74S195N  SN74S195J  SN74S195
 SN74S194N  SN74S194J  SN74S194AN  SN74S194  SN74S193N
 SN74S193J  SN74S192J  SN74S191J  SN74S190J  SN74S189NB
 SN74S189N  SN74S189JB  SN74S189J  SN74S189BN  SN74S189BJ
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