Chimicron is an independent distributor of electronic components. We have reliable sources of electronic components, only sell new & original products and offer 1 year warranty for our products. Buy the DS3644B+ Maxim Integrated at chimicron.com. We have 1000 pieces of DS3644B+ in stock available now. Submit an inquiry for DS3644B+ or send an email to [email protected], we will contact you in 24 hours.