Milpitas, Calif. - Linear Technology's LTC2903-1 keeps tabs on up to four low-voltage supplies simultaneously, assuring accurate monitoring down to 0.5 V. The chip provides 10 percent undervoltage monitoring with ±1.5 percent threshold accuracy over temperature to guarantee reliable reset operation without false triggering. Its common reset output (open-drain) remains low until all four inputs have been in compliance for 200 ms. Factory-trimmed voltage combinations are available in three versions to accommodate various input supplies with minimal requirements for external components. The selection includes options for monitoring +5, +3.3, +2.5, +1.8, and -5.2 volts, and an adjustable input down to 0.5 V. The chip is immune to power supply glitches. The LTC2903-1, in a 6-lead ThinSOT (SOT-23) package, is priced beginning at $1.65 each in 1k quantities.
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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.