请问这是哪种类型的芯片？
LS07对应的应该是SN74LS07D系列
封装是SSOP-14的
两个芯片，我描述的都是表面的丝印，57CLCDK G4 LS07 这是第一个表面的完整丝印（能看到的）。
类似这种芯片，只不过表面封装不一致
https://image.baidu.com/search/detail?ct=503316480&z=0&ipn=d&word=SN74LS07D&step_word=&hs=0&pn=17&spn=0&di=297852827921&pi=0&rn=1&tn=baiduimagedetail&is=0%2C0&istype=0&ie=utf-8&oe=utf-8&in=&cl=2&lm=-1&st=undefined&cs=3231337397%2C4181847685&os=2537015705%2C484229228&simid=0%2C0&adpicid=0&lpn=0&ln=176&fr=&fmq=1534899645452_R&fm=&ic=undefined&s=undefined&se=&sme=&tab=0&width=undefined&height=undefined&face=undefined&ist=&jit=&cg=&bdtype=15&oriquery=&objurl=http%3A%2F%2Fimg011.hc360.cn%2Fm7%2FM03%2FDD%2FFF%2FwKhQpFWo_5-EAVChAAAAAEkCvZM273.jpg&fromurl=ippr_z2C%24qAzdH3FAzdH3Fkdk_z%26e3Bivnma_z%26e3Bv54AzdH3FetjoPtvfAzdH3Ff7rrsyfjsu_rtvfAzdH3F99laadb8b_z%26e3Bip4s&gsm=0&rpstart=0&rpnum=0&islist=&querylist=
