I saw an eevblog teardown of an oscillator module like this, but that was newer, not this old stock. Question for you. This component is technically not a crys

I saw an eevblog teardown of an oscillator module like this, but that was newer, not this old stock. Question for you. This component is technically not a crystal component right? I.e. you can hook the output straight into a clock input or anything that accepts a digital signal? There are other 2-terminal components where the circuit to drive the crystal is external, right? Are those 2-terminal components literally just electrodes attached to a crystal or do they have extra circuitry in them as well?