I suggest you start with **broken link removed** You arent telling anyone what you want to do with the chip? The 555 timer has dozens of configurations for different applications. Minimum Requirments for what?
Additionally the MINIMUM Supply Voltage is 4.5 Volts so two AAA or AA cells won't work.
The 74HC14 oscillators in my 3V Ultra-Bright Chaser project still work when the 3V battery has dropped to 1.2V. Its supply current is very low so the battery lasts for a long time.
An ordinary 555 needs a supply of at least 4.5V and it has a fairly high supply current that will kill the battery soon.
I don't know why so many people use the old 555 timer nowadays.
The only reason I can think of is because it can directly drive a 200mA load, which a CMOS IC can't do.
An HC IC can supply up to 50mA if several gate outputs are connected in parallel so if you want to drive a small relay you could use a hex inverter to make an oscillator and parallel the unused gates to drive a 50mA load.