The Texas Instruments CD74HC4049MT is a hex inverting buffer from the 74HC high-speed CMOS logic family. It packs six independent inverting buffer channels, each with a single-bit input and a push-pull output, into a 16-SOIC surface-mount package.
Output drive — 5.2 mA per channel, push-pull
Each buffer can source or sink 5.2 mA, which is typical for standard 74HC logic. That is enough to drive a few CMOS gate inputs, an LED indicator through a series resistor, or a short PCB trace. For loads beyond that — relays, long cables, or high-capacitance buses — you will need a line driver or a discrete transistor stage.