The maximum power dissipation of the LM358PWRG3 is 670mW, which is calculated based on the package thermal resistance and the maximum junction temperature.
While the LM358PWRG3 can be used as a comparator, it's not the best choice due to its relatively slow slew rate and limited bandwidth. A dedicated comparator like the LM339 or LM2901 would be a better option.
To ensure stability, make sure to decouple the power supply lines with capacitors, use a low-ESR capacitor for bypassing, and avoid using long wires or traces that can introduce noise and oscillations.
The input impedance of the LM358PWRG3 is typically around 2MΩ, but it can vary depending on the specific application and circuit configuration.
The LM358PWRG3 is rated for operation up to 125°C, but its performance may degrade at higher temperatures. If you need to operate in extreme temperatures, consider using a more specialized op-amp designed for high-temperature applications.