SN74LS688DW
SN74LS688DWE4
SN74LS688DWG4
SN74LS688DWR
SN74LS688DWR2
SN74LS688DWRE4
SN74LS688DWRG4
SN74LS688N
SN74LS688NE4
SN74LS688NS