SN74HC00N
SN74HC00NE4
SN74HC00NS
SN74HC00NSE4
SN74HC00NSG4
SN74HC00NSLE
SN74HC00NSR
SN74HC00NSRE4
SN74HC00NSRG4
SN74HC00PW
19129493934(手机优先微信同号)0755-83266697