I'm working on a project that uses the SN74HC595N shift register from TI. The nature of this project requires that I solder on pin extensions. My soldering skills are not too solid, so I'm worried that I may be damaging it (based on it's performance, I'm pretty sure that I am).
I know that the operational temperature is -40°C ~ 85°C
My question. How hot can this shift register get before it sustains permanent damage. And is improper soldering the likely cause of the shift register's malfunction as I presume?