SN74LS240NSR
SN74LS240NSRE4
SN74LS240NSRG4
SN74LS241DW
SN74LS241DWE4
SN74LS241DWG4
SN74LS241DWR
SN74LS241DWRE4
SN74LS241DWRG4
SN74LS241J