HD74LS161ANSN74LS160NDIP16163¥0.56去看看深圳市垚鑫电子科技发布了SN74LS160N HD74LS161AN 163/165/166P/194AP/76N/83N DIP16SN74LS194AN芯片SHIFTUNIV¥15.40去看看盛夏芯片发布了SN74LS194AN芯片 〔IC BI-DIR UNIV SHIFT REG 16-DIP 〕