标签: 与非缓冲器

7438TTL开路输出2输入端四与非缓冲器……

7439TTL开路输出2输入端四与非缓冲器……

   Thisdevicecontainsfourindependentgateswithtwodatainputs,eachwhichperformsthelogicNANDfunction.……

   ThisdevicecontainsfourindependentgateseachofwhichperformsthelogicNANDfunction.Theopen-collectoroutputsrequireexternalpull-upresistorsforproperlogicaloperation.……