The maximum operating temperature range for the SN74LS06NE4 is -40°C to 85°C.
No, the SN74LS06NE4 is a 5V device and is not compatible with 3.3V logic. It requires a 4.5V to 5.5V power supply.
The maximum current that the SN74LS06NE4 can sink or source is 24mA.
The SN74LS06NE4 is a relatively slow device with a maximum toggle frequency of 35MHz. It may not be suitable for high-frequency applications. For high-frequency applications, consider using a faster device such as the 74LVC06A or 74AHC06.
No, the SN74LS06NE4 is not radiation-hardened. It is not designed for use in high-radiation environments such as space or nuclear applications.