SN74LS684NSR
SN74LS684NSRE4
SN74LS684NSRG4
SN74LS688DBR
SN74LS688DBRE4
SN74LS688DBRG4
SN74LS688DW
SN74LS688DWE4
SN74LS688DWG4
SN74LS688DWR