The HEF4011B is a quad 2-input NAND gate. The outputs are fully buffered for the highest noise immunity and pattern insensitivity to output impedance. It operates over a recommended VDD power supply range of 3 V to 15 V referenced to VSS (usually ground). Unused inputs must be connected to VDD, VSS, or another input.
The device is suitable for use over both the industrial (-40 oC to +85 oC) and automotive (-40 oC to +125 oC) temperature ranges.