As an Amazon Associate, we earn from qualifying purchases. DM74LS166WM - National Semiconductor - Integrated Circuits National Semiconductor . DM74LS166WM Gallery Attributes Brand name, Manufacturer name, ManufacturerNational Semiconductor Extra Product NameDM74LS166WM - National Semiconductor - Integrated Circuits moq, multiple1 MPN, SKUDM74LS166WM qtyInStock0 snippetDM74LS166WM In-Stock. Request a quote for the part number# DM74LS166WM. Call 877-240-8595 to order. Same day shipping on in-stock parts. Distributor offers SellerSKUMOQIn stockMultiplePrices 4 Star ElectronicsDM74LS166WM11