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相关型号
SN74LVC4245DB SN74LVC4245PW SN74LVC540A SN74LVC540ADB SN74LVC540ADBR SN74LVC540ADBRE4 SN74LVC540ADBRG4 SN74LVC540ADGVR SN74LVC540ADGVRE4 SN74LVC540ADGVRG4