CD4011BE is an integrated circuit (IC) made by HGSEMI, featuring four two-input NAND gates in a single package. The NAND logic gates obtain their inputs from two pins and output the inverse of the logic level at the third pin. This allows for building more complex logic devices such as relays, logic gates, and counters. The IC operates at a voltage range of 2-5.5 V and comes in a DIP-14 package, which consists of 14 outward-facing pins that can easily be connected to a printed circuit board. This part is RoHS compliant, meaning it does not contain any hazardous substances that could harm the environment.