High-speed static programmable logic array in LOCMOS

A large static programmable logic array (PLA) with 20 inputs, 94 product terms, and 24 outputs, designed and realized in LOCMOS, the complementary MOS technology with isolation by local oxidation of silicon. Layout and physical parameters of this technology resulted in a simple, dense, and low-capacity design. The dc and transient features of different realization possibilities have been simulated. Design automation tools have been developed to ensure error-free personalization of the PLA. A density of 160 gates per mm/SUP 2/ has been achieved. Samples show average propagation delays of 100 ns, while dissipation is typically 120 mW.