1. General description
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.
2. Features and benefits
 Fully static operation
 5 V, 10 V, and 15 V parametric ratings
 Standardized symmetrical output characteristics
 Specified from 40 C to +125 C
 Complies with JEDEC standard JESD 13-B
 Inputs and outputs are protected against electrostatic effects