贴片直插MC14555P，MC14528P，MC14490L，MC14499P，MC1458CL，9

原MC145540P MC14554DW MC14555 MC1455502P原

原MC145557P MC14555B MC14556 MC145564DW原

贴插MC14577BP MC14555BF MC145506P MC145554P MC14577CP 9

议价原原MC14503BCP UPD4518BC MC14555B HD74HC374P