Hello. Welcome to Futurlec. The ELECTRONIC COMPONENTS Superstore. To find the component your looking for, either search by Part Number or visit the relative department. Need Help. CD4000 SERIES CD4000 Series   Standard CMOS CD4000 Series, low power, high speed. CD4000 SERIES SMD CD4000 Series - SMD Standard CMOS CD4000 Series SMD Type with SOIC Package.