Each of the four independent buffers has its own output-enable pin (active low), letting you gate each channel individually.
Where it fits — typical use cases
This buffer is a go-to for bus isolation, signal fan-out, and driving a shared data bus where you need to disconnect the output when it is not addressed. The 3-state outputs let multiple devices share a common line — think memory data buses, peripheral chip-select gating, or level-translating between 5V and 3.3V domains (the 2V–6V supply range covers both).
Supply range and drive — what the numbers mean
The 3-state outputs go high-impedance when the corresponding output-enable pin is pulled high, which is how you share a bus without contention.