SN74LS240DBR
SN74LS240DBRE4
SN74LS240DBRG4
SN74LS240DW
SN74LS240DWG4
SN74LS240DWR
SN74LS240DWR2
SN74LS240DWRE4
SN74LS240DWRG4
SN74LS240J