Hex Inverter - CD4069
The CD4069 device consist of six CMOS inverter circuits. These devices are intended for all general purpose inverter applications where the medium power TTL-drive and logic-level-conversion capabilities of circuits such as the CD4009 and CD4049 hex inverter and buffers are not required.
• Logic Inversion • Pulse Shaping • Oscillators • High-Input-Impedance Amplifiers
Description above from Texas Instruments, see data sheet for more information - http://www.ti.com/lit/ds/symlink/cd4069ub.pdf