IEC 60748-4:1987

Gives standards for the following categories or sub-categories of interface integrated circuits:
-Category I:
Sub-category A: Line circuits (transmitters and receivers);
Sub-category B: Sense amplifiers;
Sub-category C: Peripheral drivers (including memory
drivers) and level shifters;
Sub-category D: Voltage comparators.
-Category I I:
Linear and non-linear analogue-to-digital and digital-to-
analogue converters.