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请问ti是否生产过这样的逻辑hc573

Other Parts Discussed in Thread: SN74AHC573, SN74HC573, SN54AHC573

ic marking “hc573"和ti标志logo,sop-20封装,脚距1.27mm
但是TI的网站死活找不到这样的封装和标识的573,这是不是假的?但是代理商买来的也是这样的?