SN74ALS245N
SN74ALS245NSR
SN74ALS251D
SN74ALS251DE4
SN74ALS251DG4
SN74ALS251DR
SN74ALS251DRE4
SN74ALS251DRG4
SN74ALS251N
SN74ALS251NE4
19129491934(手机优先微信同号)