The six-lead SC-89 Little Foot is a low-resistance MOSFET measuring 0.6 mm high with a 2.56-mm2 footprint. The device comes in two single p-channel versions, the Si1039X and the Si1037X, with respective ratings of 165 and 195 m ohms at a -4.5-V gate drive. Each can handle up to 0.95 amp. Another version, the Si1040X, comes in both n- and p-channel models and includes a level shift to allow a low-voltage microcontroller to control loads on a range of different voltage rails. The n-channel version has internal ESD protection and can be driven by logic signals as low as 1.5 V. Available now, the SC-89 is priced at 22 cents each per 100,000.
David Patterson, known for his pioneering research that led to RAID, clusters and more, is part of a team at UC Berkeley that recently made its RISC-V processor architecture an open source hardware offering. We talk with Patterson and one of his colleagues behind the effort about the opportunities they see, what new kinds of designs they hope to enable and what it means for today’s commercial processor giants such as Intel, ARM and Imagination Technologies.