i am designing a pulse generator using opamp.It consist of an astable multivibrator which triggers a monostable multivibrator.i previously used 741 opamp in order to generate a 10 microsecond pulse.but later i came to know that since it is a high frequency application ,741 is not sufficient.so i want to change the opamp.i am doubt ful that if i replace the 741 ic with an opamp which is having the same pinout as that of 741,will the design of my circuit change?