SN74HCT244DW
SN74HCT244DWE4
SN74HCT244DWG4
SN74HCT244DWR
SN74HCT244DWRE4
SN74HCT244DWRG4
SN74HCT244N
SN74HCT244NE4
SN74HCT244NS
SN74HCT244NSE4
19129491934(手机优先微信同号)