SN74LS681N
SN74LS682DB
SN74LS682DBE4
SN74LS682DBG4
SN74LS682DW
SN74LS682DWE4
SN74LS682DWG4
SN74LS682DWR
SN74LS682DWRE4
SN74LS682DWRG4