Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SN74S181N found under Microcircuit Digital by Advanced Micro Devices Inc. The National Stock Number assigned to this part is 5962010962190, and the Federal Supply Class is 5962 Microcircuits Electronic. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like SN74S181N.