What do all the letters after the numbers mean at the end of an IC?
From Rob Strand: General letter usage (not just TLO7x, and all options may not be available): The A and B refers to offset voltage categories. Non-A/B versions have the highest, then A, then B. The C, I, M referes to the temperature range, widening/increasing in that order. The P, N, H, J refers to the package type/material. Usually D means a surface-mount package. Sometimes the different package material implies different operating temperature ranges. Basically you are safe with any of these except D. For Audio projects usually the cheapest is OK. Using low offsets, wider temp range and different packages _usually_ means you pay more, and if you don’t need the options you’re wasting your money.
