SN74LS240NE4
SN74LS240NS
SN74LS240NSE4
SN74LS240NSG4
SN74LS240NSR
SN74LS240NSRE4
SN74LS240NSRG4
SN74LS241DW
SN74LS241DWE4
SN74LS241DWG4