10K Gate I2L and 1K component analog compatible bipolar VLSI technology—HIT-2

An advanced analog/digital bipolar VLSI technology that combines on the same chip 2-ns 10K I²L gates with 1K analog devices is proposed. The new technology, called high-density integration technology-2 (HIT-2), is based on a new structure concept that consists of three major techniques: shallow grooved-isolation, I²L active layer etching, and I²L current gain increase. I²L circuits with 80-MHz maximum toggle frequency have developed compatibly with n-p-n transistors having a BVCEOof more than 10 V and an fTof 5 GHz, and lateral p-n-p transistors having an fTof 150 MHz.