SN74LS448N
SN74LS449N
SN74LS461NS
SN74LS465DW
SN74LS465DWE4
SN74LS465DWG4
SN74LS465DWR
SN74LS465DWRE4
SN74LS465DWRG4
SN74LS465N
19129491934(手机优先微信同号)