SN74F02NE4
SN74F02NS
SN74F02NSE4
SN74F02NSG4
SN74F02NSR
SN74F02NSRE4
SN74F02NSRG4
SN74F04D
SN74F04DB
SN74F04DBE4
19129491934(手机优先微信同号)