Catalyst Semiconductor [ Catalyst ( ON ) ] - Catalyst Semiconductor has been acquired by ON Semiconductor. ON Semiconductor′s Catalyst Group designs a broad range of programmable products including Flash Memory, Parallel, and Serial EEPROMs with I2C, SPI, and Microwire interfaces, NVRAMS, Digitally Programmable Potentiometers, Microcontroller Supervisory circuits and other programmable Mixed Signal products. ON Semiconductor is a premier supplier of high-performance, energy-efficient silicon solutions for green electronics. ON Semiconductor's broad portfolio of power and signal management, logic, discrete and custom devices helps customers efficiently solve their design challenges in automotive, communications, computing, consumer, industrial, LED lighting, medical, military/aerospace and power applications.