An LM741 is a general purpose operational amplifier for military, industrial and commercial applications. As of 2014, manufacturers include Texas Instruments, Fairchild Semiconductor, Intersil Corporation and National Semiconductor. Datasheets can be found on each respective manufacturer's website.
According to Intersil's website, the LM741 is not recommended for new designs. The LM741 series offers improved performance over industry standards, such as the LM709. It offers overload protection on the input and output, freedom from oscillations and no latch-up when the common mode range is exceeded. Other features include high input voltage range and excellent temperature stability. Some applications include comparators and DC amplifiers.