74ACT11181 Overview
The 74ACT11181 is an arithmetic logic unit (ALU)/function generator that has a plexity of 75 equivalent gates on a monolithic chip. These circuits perform 16 binary arithmetic operations on two 4-bit words as shown in Tables 1 and 2. These operations are selected by the four function-select lines (S0, S1, S2, S3) and include addition, subtraction, decrement, and straight transfer.
