ISCAS High-Level Models


74182 Carry Look-Ahead Circuit

Statistics: 9 inputs; 4 output; 19 gates; gate-level schematic

Function: The carry look-ahead (CLA) realization of the carry function is used by each of the 74X-series circuits modeled here. Given carry-in (C_n), generate (G) and propagate (P) signals, the circuit produces three carry out signals, plus two P and G signals used to cascade into another CLA block. This circuit is small enough to be modeled as a single primitive.